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Author SHA1 Message Date
Heikki Linnakangas
e19c84cba9 Track not_modified_since, client-support for protocol V2 2024-04-14 17:50:34 +03:00
174 changed files with 4992 additions and 9272 deletions

1
.envrc
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@@ -1 +0,0 @@
use flake . --impure

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@@ -477,7 +477,6 @@ jobs:
BUILD_TAG: ${{ needs.tag.outputs.build-tag }}
PAGESERVER_VIRTUAL_FILE_IO_ENGINE: tokio-epoll-uring
PAGESERVER_GET_VECTORED_IMPL: vectored
PAGESERVER_GET_IMPL: vectored
# Temporary disable this step until we figure out why it's so flaky
# Ref https://github.com/neondatabase/neon/issues/4540
@@ -736,7 +735,7 @@ jobs:
run: |
mkdir -p .docker-custom
echo DOCKER_CONFIG=$(pwd)/.docker-custom >> $GITHUB_ENV
- uses: docker/setup-buildx-action@v2
- uses: docker/setup-buildx-action@v3
- uses: docker/login-action@v3
with:
@@ -793,7 +792,7 @@ jobs:
run: |
mkdir -p .docker-custom
echo DOCKER_CONFIG=$(pwd)/.docker-custom >> $GITHUB_ENV
- uses: docker/setup-buildx-action@v2
- uses: docker/setup-buildx-action@v3
with:
# Disable parallelism for docker buildkit.
# As we already build everything with `make -j$(nproc)`, running it in additional level of parallelisam blows up the Runner.
@@ -866,7 +865,7 @@ jobs:
run:
shell: sh -eu {0}
env:
VM_BUILDER_VERSION: v0.28.1
VM_BUILDER_VERSION: v0.23.2
steps:
- name: Checkout
@@ -1134,6 +1133,8 @@ jobs:
-f deployPreprodRegion=true
gh workflow --repo neondatabase/aws run deploy-prod.yml --ref main \
-f deployPgSniRouter=false \
-f deployProxy=false \
-f deployStorage=true \
-f deployStorageBroker=true \
-f deployStorageController=true \

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@@ -28,9 +28,7 @@ jobs:
- name: Get build-tools image tag for the current commit
id: get-build-tools-tag
env:
# Usually, for COMMIT_SHA, we use `github.event.pull_request.head.sha || github.sha`, but here, even for PRs,
# we want to use `github.sha` i.e. point to a phantom merge commit to determine the image tag correctly.
COMMIT_SHA: ${{ github.sha }}
COMMIT_SHA: ${{ github.event.pull_request.head.sha || github.sha }}
GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
run: |
LAST_BUILD_TOOLS_SHA=$(

4
.gitignore vendored
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@@ -23,7 +23,3 @@ compaction-suite-results.*
# pgindent typedef lists
*.list
# nix dev env
.direnv
.devenv

37
Cargo.lock generated
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@@ -599,7 +599,7 @@ dependencies = [
"once_cell",
"pin-project-lite",
"pin-utils",
"rustls 0.21.11",
"rustls 0.21.9",
"tokio",
"tracing",
]
@@ -2519,7 +2519,7 @@ dependencies = [
"http 0.2.9",
"hyper 0.14.26",
"log",
"rustls 0.21.11",
"rustls 0.21.9",
"rustls-native-certs 0.6.2",
"tokio",
"tokio-rustls 0.24.0",
@@ -3658,7 +3658,6 @@ dependencies = [
"tokio-util",
"toml_edit",
"tracing",
"twox-hash",
"url",
"utils",
"walkdir",
@@ -4060,7 +4059,7 @@ dependencies = [
"futures",
"once_cell",
"pq_proto",
"rustls 0.22.4",
"rustls 0.22.2",
"rustls-pemfile 2.1.1",
"serde",
"thiserror",
@@ -4351,7 +4350,7 @@ dependencies = [
"routerify",
"rstest",
"rustc-hash",
"rustls 0.22.4",
"rustls 0.22.2",
"rustls-pemfile 2.1.1",
"scopeguard",
"serde",
@@ -4543,7 +4542,7 @@ dependencies = [
"itoa",
"percent-encoding",
"pin-project-lite",
"rustls 0.22.4",
"rustls 0.22.2",
"rustls-native-certs 0.7.0",
"rustls-pemfile 2.1.1",
"rustls-pki-types",
@@ -4697,7 +4696,7 @@ dependencies = [
"once_cell",
"percent-encoding",
"pin-project-lite",
"rustls 0.21.11",
"rustls 0.21.9",
"rustls-pemfile 1.0.2",
"serde",
"serde_json",
@@ -4957,9 +4956,9 @@ dependencies = [
[[package]]
name = "rustls"
version = "0.21.11"
version = "0.21.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7fecbfb7b1444f477b345853b1fce097a2c6fb637b2bfb87e6bc5db0f043fae4"
checksum = "629648aced5775d558af50b2b4c7b02983a04b312126d45eeead26e7caa498b9"
dependencies = [
"log",
"ring 0.17.6",
@@ -4969,9 +4968,9 @@ dependencies = [
[[package]]
name = "rustls"
version = "0.22.4"
version = "0.22.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bf4ef73721ac7bcd79b2b315da7779d8fc09718c6b3d2d1b2d94850eb8c18432"
checksum = "e87c9956bd9807afa1f77e0f7594af32566e830e088a5576d27c5b6f30f49d41"
dependencies = [
"log",
"ring 0.17.6",
@@ -5085,7 +5084,6 @@ dependencies = [
"aws-smithy-async",
"bincode",
"bytes",
"camino",
"chrono",
"clap",
"crc32c",
@@ -5284,7 +5282,7 @@ checksum = "2e95efd0cefa32028cdb9766c96de71d96671072f9fb494dc9fb84c0ef93e52b"
dependencies = [
"httpdate",
"reqwest",
"rustls 0.21.11",
"rustls 0.21.9",
"sentry-backtrace",
"sentry-contexts",
"sentry-core",
@@ -5832,7 +5830,8 @@ checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
[[package]]
name = "svg_fmt"
version = "0.4.2"
source = "git+https://github.com/neondatabase/fork--nical--rust_debug?branch=neon#b9501105e746629004bc6d0473639320939dbe10"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f83ba502a3265efb76efb89b0a2f7782ad6f2675015d4ce37e4b547dda42b499"
[[package]]
name = "syn"
@@ -6194,7 +6193,7 @@ checksum = "0ea13f22eda7127c827983bdaf0d7fff9df21c8817bab02815ac277a21143677"
dependencies = [
"futures",
"ring 0.17.6",
"rustls 0.22.4",
"rustls 0.22.2",
"tokio",
"tokio-postgres",
"tokio-rustls 0.25.0",
@@ -6207,7 +6206,7 @@ version = "0.24.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e0d409377ff5b1e3ca6437aa86c1eb7d40c134bfec254e44c830defa92669db5"
dependencies = [
"rustls 0.21.11",
"rustls 0.21.9",
"tokio",
]
@@ -6217,7 +6216,7 @@ version = "0.25.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "775e0c0f0adb3a2f22a00c4745d728b479985fc15ee7ca6a2608388c5569860f"
dependencies = [
"rustls 0.22.4",
"rustls 0.22.2",
"rustls-pki-types",
"tokio",
]
@@ -6678,7 +6677,7 @@ dependencies = [
"base64 0.21.1",
"log",
"once_cell",
"rustls 0.21.11",
"rustls 0.21.9",
"rustls-webpki 0.100.2",
"url",
"webpki-roots 0.23.1",
@@ -7355,7 +7354,7 @@ dependencies = [
"regex-automata 0.4.3",
"regex-syntax 0.8.2",
"reqwest",
"rustls 0.21.11",
"rustls 0.21.9",
"scopeguard",
"serde",
"serde_json",

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@@ -157,8 +157,7 @@ socket2 = "0.5"
strum = "0.24"
strum_macros = "0.24"
"subtle" = "2.5.0"
# https://github.com/nical/rust_debug/pull/4
svg_fmt = { git = "https://github.com/neondatabase/fork--nical--rust_debug", branch = "neon" }
svg_fmt = "0.4.1"
sync_wrapper = "0.1.2"
tar = "0.4"
task-local-extensions = "0.1.4"

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@@ -25,16 +25,14 @@ ifeq ($(UNAME_S),Linux)
# Seccomp BPF is only available for Linux
PG_CONFIGURE_OPTS += --with-libseccomp
else ifeq ($(UNAME_S),Darwin)
ifndef DISABLE_HOMEBREW
# macOS with brew-installed openssl requires explicit paths
# It can be configured with OPENSSL_PREFIX variable
OPENSSL_PREFIX ?= $(shell brew --prefix openssl@3)
PG_CONFIGURE_OPTS += --with-includes=$(OPENSSL_PREFIX)/include --with-libraries=$(OPENSSL_PREFIX)/lib
PG_CONFIGURE_OPTS += PKG_CONFIG_PATH=$(shell brew --prefix icu4c)/lib/pkgconfig
# macOS already has bison and flex in the system, but they are old and result in postgres-v14 target failure
# brew formulae are keg-only and not symlinked into HOMEBREW_PREFIX, force their usage
EXTRA_PATH_OVERRIDES += $(shell brew --prefix bison)/bin/:$(shell brew --prefix flex)/bin/:
endif
# macOS with brew-installed openssl requires explicit paths
# It can be configured with OPENSSL_PREFIX variable
OPENSSL_PREFIX ?= $(shell brew --prefix openssl@3)
PG_CONFIGURE_OPTS += --with-includes=$(OPENSSL_PREFIX)/include --with-libraries=$(OPENSSL_PREFIX)/lib
PG_CONFIGURE_OPTS += PKG_CONFIG_PATH=$(shell brew --prefix icu4c)/lib/pkgconfig
# macOS already has bison and flex in the system, but they are old and result in postgres-v14 target failure
# brew formulae are keg-only and not symlinked into HOMEBREW_PREFIX, force their usage
EXTRA_PATH_OVERRIDES += $(shell brew --prefix bison)/bin/:$(shell brew --prefix flex)/bin/:
endif
# Use -C option so that when PostgreSQL "make install" installs the

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@@ -818,15 +818,9 @@ impl ComputeNode {
Client::connect(zenith_admin_connstr.as_str(), NoTls)
.context("broken cloud_admin credential: tried connecting with cloud_admin but could not authenticate, and zenith_admin does not work either")?;
// Disable forwarding so that users don't get a cloud_admin role
let mut func = || {
client.simple_query("SET neon.forward_ddl = false")?;
client.simple_query("CREATE USER cloud_admin WITH SUPERUSER")?;
client.simple_query("GRANT zenith_admin TO cloud_admin")?;
Ok::<_, anyhow::Error>(())
};
func().context("apply_config setup cloud_admin")?;
client.simple_query("SET neon.forward_ddl = false")?;
client.simple_query("CREATE USER cloud_admin WITH SUPERUSER")?;
client.simple_query("GRANT zenith_admin TO cloud_admin")?;
drop(client);
// reconnect with connstring with expected name
@@ -838,29 +832,24 @@ impl ComputeNode {
};
// Disable DDL forwarding because control plane already knows about these roles/databases.
client
.simple_query("SET neon.forward_ddl = false")
.context("apply_config SET neon.forward_ddl = false")?;
client.simple_query("SET neon.forward_ddl = false")?;
// Proceed with post-startup configuration. Note, that order of operations is important.
let spec = &compute_state.pspec.as_ref().expect("spec must be set").spec;
create_neon_superuser(spec, &mut client).context("apply_config create_neon_superuser")?;
cleanup_instance(&mut client).context("apply_config cleanup_instance")?;
handle_roles(spec, &mut client).context("apply_config handle_roles")?;
handle_databases(spec, &mut client).context("apply_config handle_databases")?;
handle_role_deletions(spec, connstr.as_str(), &mut client)
.context("apply_config handle_role_deletions")?;
create_neon_superuser(spec, &mut client)?;
cleanup_instance(&mut client)?;
handle_roles(spec, &mut client)?;
handle_databases(spec, &mut client)?;
handle_role_deletions(spec, connstr.as_str(), &mut client)?;
handle_grants(
spec,
&mut client,
connstr.as_str(),
self.has_feature(ComputeFeature::AnonExtension),
)
.context("apply_config handle_grants")?;
handle_extensions(spec, &mut client).context("apply_config handle_extensions")?;
handle_extension_neon(&mut client).context("apply_config handle_extension_neon")?;
create_availability_check_data(&mut client)
.context("apply_config create_availability_check_data")?;
)?;
handle_extensions(spec, &mut client)?;
handle_extension_neon(&mut client)?;
create_availability_check_data(&mut client)?;
// 'Close' connection
drop(client);
@@ -868,7 +857,7 @@ impl ComputeNode {
// Run migrations separately to not hold up cold starts
thread::spawn(move || {
let mut client = Client::connect(connstr.as_str(), NoTls)?;
handle_migrations(&mut client).context("apply_config handle_migrations")
handle_migrations(&mut client)
});
Ok(())
}

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@@ -2,7 +2,7 @@ use std::fs::File;
use std::path::Path;
use std::str::FromStr;
use anyhow::{anyhow, bail, Context, Result};
use anyhow::{anyhow, bail, Result};
use postgres::config::Config;
use postgres::{Client, NoTls};
use reqwest::StatusCode;
@@ -698,8 +698,7 @@ pub fn handle_grants(
// it is important to run this after all grants
if enable_anon_extension {
handle_extension_anon(spec, &db.owner, &mut db_client, false)
.context("handle_grants handle_extension_anon")?;
handle_extension_anon(spec, &db.owner, &mut db_client, false)?;
}
}
@@ -814,36 +813,28 @@ $$;"#,
// Add new migrations below.
];
let mut func = || {
let query = "CREATE SCHEMA IF NOT EXISTS neon_migration";
client.simple_query(query)?;
let mut query = "CREATE SCHEMA IF NOT EXISTS neon_migration";
client.simple_query(query)?;
let query = "CREATE TABLE IF NOT EXISTS neon_migration.migration_id (key INT NOT NULL PRIMARY KEY, id bigint NOT NULL DEFAULT 0)";
client.simple_query(query)?;
query = "CREATE TABLE IF NOT EXISTS neon_migration.migration_id (key INT NOT NULL PRIMARY KEY, id bigint NOT NULL DEFAULT 0)";
client.simple_query(query)?;
let query = "INSERT INTO neon_migration.migration_id VALUES (0, 0) ON CONFLICT DO NOTHING";
client.simple_query(query)?;
query = "INSERT INTO neon_migration.migration_id VALUES (0, 0) ON CONFLICT DO NOTHING";
client.simple_query(query)?;
let query = "ALTER SCHEMA neon_migration OWNER TO cloud_admin";
client.simple_query(query)?;
query = "ALTER SCHEMA neon_migration OWNER TO cloud_admin";
client.simple_query(query)?;
let query = "REVOKE ALL ON SCHEMA neon_migration FROM PUBLIC";
client.simple_query(query)?;
Ok::<_, anyhow::Error>(())
};
func().context("handle_migrations prepare")?;
query = "REVOKE ALL ON SCHEMA neon_migration FROM PUBLIC";
client.simple_query(query)?;
let query = "SELECT id FROM neon_migration.migration_id";
let row = client
.query_one(query, &[])
.context("handle_migrations get migration_id")?;
query = "SELECT id FROM neon_migration.migration_id";
let row = client.query_one(query, &[])?;
let mut current_migration: usize = row.get::<&str, i64>("id") as usize;
let starting_migration_id = current_migration;
let query = "BEGIN";
client
.simple_query(query)
.context("handle_migrations begin")?;
query = "BEGIN";
client.simple_query(query)?;
while current_migration < migrations.len() {
let migration = &migrations[current_migration];
@@ -851,9 +842,7 @@ $$;"#,
info!("Skip migration id={}", current_migration);
} else {
info!("Running migration:\n{}\n", migration);
client.simple_query(migration).with_context(|| {
format!("handle_migrations current_migration={}", current_migration)
})?;
client.simple_query(migration)?;
}
current_migration += 1;
}
@@ -861,14 +850,10 @@ $$;"#,
"UPDATE neon_migration.migration_id SET id={}",
migrations.len()
);
client
.simple_query(&setval)
.context("handle_migrations update id")?;
client.simple_query(&setval)?;
let query = "COMMIT";
client
.simple_query(query)
.context("handle_migrations commit")?;
query = "COMMIT";
client.simple_query(query)?;
info!(
"Ran {} migrations",

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@@ -417,54 +417,6 @@ async fn handle_tenant(
println!("{} {:?}", t.id, t.state);
}
}
Some(("import", import_match)) => {
let tenant_id = parse_tenant_id(import_match)?.unwrap_or_else(TenantId::generate);
let storage_controller = StorageController::from_env(env);
let create_response = storage_controller.tenant_import(tenant_id).await?;
let shard_zero = create_response
.shards
.first()
.expect("Import response omitted shards");
let attached_pageserver_id = shard_zero.node_id;
let pageserver =
PageServerNode::from_env(env, env.get_pageserver_conf(attached_pageserver_id)?);
println!(
"Imported tenant {tenant_id}, attached to pageserver {attached_pageserver_id}"
);
let timelines = pageserver
.http_client
.list_timelines(shard_zero.shard_id)
.await?;
// Pick a 'main' timeline that has no ancestors, the rest will get arbitrary names
let main_timeline = timelines
.iter()
.find(|t| t.ancestor_timeline_id.is_none())
.expect("No timelines found")
.timeline_id;
let mut branch_i = 0;
for timeline in timelines.iter() {
let branch_name = if timeline.timeline_id == main_timeline {
"main".to_string()
} else {
branch_i += 1;
format!("branch_{branch_i}")
};
println!(
"Importing timeline {tenant_id}/{} as branch {branch_name}",
timeline.timeline_id
);
env.register_branch_mapping(branch_name, tenant_id, timeline.timeline_id)?;
}
}
Some(("create", create_match)) => {
let tenant_conf: HashMap<_, _> = create_match
.get_many::<String>("config")
@@ -1465,7 +1417,6 @@ fn cli() -> Command {
.subcommand(
Command::new("timeline")
.about("Manage timelines")
.arg_required_else_help(true)
.subcommand(Command::new("list")
.about("List all timelines, available to this pageserver")
.arg(tenant_id_arg.clone()))
@@ -1528,8 +1479,6 @@ fn cli() -> Command {
.subcommand(Command::new("config")
.arg(tenant_id_arg.clone())
.arg(Arg::new("config").short('c').num_args(1).action(ArgAction::Append).required(false)))
.subcommand(Command::new("import").arg(tenant_id_arg.clone().required(true))
.about("Import a tenant that is present in remote storage, and create branches for its timelines"))
)
.subcommand(
Command::new("pageserver")

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@@ -129,7 +129,6 @@ pub struct PageServerConf {
pub(crate) virtual_file_io_engine: Option<String>,
pub(crate) get_vectored_impl: Option<String>,
pub(crate) get_impl: Option<String>,
}
impl Default for PageServerConf {
@@ -142,7 +141,6 @@ impl Default for PageServerConf {
http_auth_type: AuthType::Trust,
virtual_file_io_engine: None,
get_vectored_impl: None,
get_impl: None,
}
}
}
@@ -158,7 +156,6 @@ pub struct SafekeeperConf {
pub remote_storage: Option<String>,
pub backup_threads: Option<u32>,
pub auth_enabled: bool,
pub listen_addr: Option<String>,
}
impl Default for SafekeeperConf {
@@ -172,7 +169,6 @@ impl Default for SafekeeperConf {
remote_storage: None,
backup_threads: None,
auth_enabled: false,
listen_addr: None,
}
}
}

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@@ -92,7 +92,6 @@ impl PageServerNode {
http_auth_type,
virtual_file_io_engine,
get_vectored_impl,
get_impl,
} = &self.conf;
let id = format!("id={}", id);
@@ -112,11 +111,6 @@ impl PageServerNode {
} else {
String::new()
};
let get_impl = if let Some(get_impl) = get_impl {
format!("get_impl='{get_impl}'")
} else {
String::new()
};
let broker_endpoint_param = format!("broker_endpoint='{}'", self.env.broker.client_url());
@@ -130,7 +124,6 @@ impl PageServerNode {
broker_endpoint_param,
virtual_file_io_engine,
get_vectored_impl,
get_impl,
];
if let Some(control_plane_api) = &self.env.control_plane_api {
@@ -441,11 +434,6 @@ impl PageServerNode {
.map(serde_json::from_str)
.transpose()
.context("parse `timeline_get_throttle` from json")?,
switch_to_aux_file_v2: settings
.remove("switch_to_aux_file_v2")
.map(|x| x.parse::<bool>())
.transpose()
.context("Failed to parse 'switch_to_aux_file_v2' as bool")?,
};
if !settings.is_empty() {
bail!("Unrecognized tenant settings: {settings:?}")
@@ -564,11 +552,6 @@ impl PageServerNode {
.map(serde_json::from_str)
.transpose()
.context("parse `timeline_get_throttle` from json")?,
switch_to_aux_file_v2: settings
.remove("switch_to_aux_file_v2")
.map(|x| x.parse::<bool>())
.transpose()
.context("Failed to parse 'switch_to_aux_file_v2' as bool")?,
}
};

View File

@@ -70,31 +70,24 @@ pub struct SafekeeperNode {
pub pg_connection_config: PgConnectionConfig,
pub env: LocalEnv,
pub http_client: reqwest::Client,
pub listen_addr: String,
pub http_base_url: String,
}
impl SafekeeperNode {
pub fn from_env(env: &LocalEnv, conf: &SafekeeperConf) -> SafekeeperNode {
let listen_addr = if let Some(ref listen_addr) = conf.listen_addr {
listen_addr.clone()
} else {
"127.0.0.1".to_string()
};
SafekeeperNode {
id: conf.id,
conf: conf.clone(),
pg_connection_config: Self::safekeeper_connection_config(&listen_addr, conf.pg_port),
pg_connection_config: Self::safekeeper_connection_config(conf.pg_port),
env: env.clone(),
http_client: reqwest::Client::new(),
http_base_url: format!("http://{}:{}/v1", listen_addr, conf.http_port),
listen_addr,
http_base_url: format!("http://127.0.0.1:{}/v1", conf.http_port),
}
}
/// Construct libpq connection string for connecting to this safekeeper.
fn safekeeper_connection_config(addr: &str, port: u16) -> PgConnectionConfig {
PgConnectionConfig::new_host_port(url::Host::parse(addr).unwrap(), port)
fn safekeeper_connection_config(port: u16) -> PgConnectionConfig {
PgConnectionConfig::new_host_port(url::Host::parse("127.0.0.1").unwrap(), port)
}
pub fn datadir_path_by_id(env: &LocalEnv, sk_id: NodeId) -> PathBuf {
@@ -118,8 +111,8 @@ impl SafekeeperNode {
);
io::stdout().flush().unwrap();
let listen_pg = format!("{}:{}", self.listen_addr, self.conf.pg_port);
let listen_http = format!("{}:{}", self.listen_addr, self.conf.http_port);
let listen_pg = format!("127.0.0.1:{}", self.conf.pg_port);
let listen_http = format!("127.0.0.1:{}", self.conf.http_port);
let id = self.id;
let datadir = self.datadir_path();
@@ -146,7 +139,7 @@ impl SafekeeperNode {
availability_zone,
];
if let Some(pg_tenant_only_port) = self.conf.pg_tenant_only_port {
let listen_pg_tenant_only = format!("{}:{}", self.listen_addr, pg_tenant_only_port);
let listen_pg_tenant_only = format!("127.0.0.1:{}", pg_tenant_only_port);
args.extend(["--listen-pg-tenant-only".to_owned(), listen_pg_tenant_only]);
}
if !self.conf.sync {

View File

@@ -472,16 +472,6 @@ impl StorageController {
.await
}
#[instrument(skip(self))]
pub async fn tenant_import(&self, tenant_id: TenantId) -> anyhow::Result<TenantCreateResponse> {
self.dispatch::<(), TenantCreateResponse>(
Method::POST,
format!("debug/v1/tenant/{tenant_id}/import"),
None,
)
.await
}
#[instrument(skip(self))]
pub async fn tenant_locate(&self, tenant_id: TenantId) -> anyhow::Result<TenantLocateResponse> {
self.dispatch::<(), _>(

View File

@@ -1,15 +1,15 @@
use std::{collections::HashMap, str::FromStr, time::Duration};
use std::{collections::HashMap, str::FromStr};
use clap::{Parser, Subcommand};
use hyper::{Method, StatusCode};
use hyper::Method;
use pageserver_api::{
controller_api::{
NodeAvailabilityWrapper, NodeDescribeResponse, ShardSchedulingPolicy,
TenantDescribeResponse, TenantPolicyRequest,
},
models::{
LocationConfigSecondary, ShardParameters, TenantConfig, TenantConfigRequest,
TenantCreateRequest, TenantShardSplitRequest, TenantShardSplitResponse,
ShardParameters, TenantConfig, TenantConfigRequest, TenantCreateRequest,
TenantShardSplitRequest, TenantShardSplitResponse,
},
shard::{ShardStripeSize, TenantShardId},
};
@@ -120,12 +120,6 @@ enum Command {
#[arg(long)]
tenant_id: TenantId,
},
/// For a tenant which hasn't been onboarded to the storage controller yet, add it in secondary
/// mode so that it can warm up content on a pageserver.
TenantWarmup {
#[arg(long)]
tenant_id: TenantId,
},
}
#[derive(Parser)]
@@ -587,94 +581,6 @@ async fn main() -> anyhow::Result<()> {
}
println!("{table}");
}
Command::TenantWarmup { tenant_id } => {
let describe_response = storcon_client
.dispatch::<(), TenantDescribeResponse>(
Method::GET,
format!("control/v1/tenant/{tenant_id}"),
None,
)
.await;
match describe_response {
Ok(describe) => {
if matches!(describe.policy, PlacementPolicy::Secondary) {
// Fine: it's already known to controller in secondary mode: calling
// again to put it into secondary mode won't cause problems.
} else {
anyhow::bail!("Tenant already present with policy {:?}", describe.policy);
}
}
Err(mgmt_api::Error::ApiError(StatusCode::NOT_FOUND, _)) => {
// Fine: this tenant isn't know to the storage controller yet.
}
Err(e) => {
// Unexpected API error
return Err(e.into());
}
}
vps_client
.location_config(
TenantShardId::unsharded(tenant_id),
pageserver_api::models::LocationConfig {
mode: pageserver_api::models::LocationConfigMode::Secondary,
generation: None,
secondary_conf: Some(LocationConfigSecondary { warm: true }),
shard_number: 0,
shard_count: 0,
shard_stripe_size: ShardParameters::DEFAULT_STRIPE_SIZE.0,
tenant_conf: TenantConfig::default(),
},
None,
true,
)
.await?;
let describe_response = storcon_client
.dispatch::<(), TenantDescribeResponse>(
Method::GET,
format!("control/v1/tenant/{tenant_id}"),
None,
)
.await?;
let secondary_ps_id = describe_response
.shards
.first()
.unwrap()
.node_secondary
.first()
.unwrap();
println!("Tenant {tenant_id} warming up on pageserver {secondary_ps_id}");
loop {
let (status, progress) = vps_client
.tenant_secondary_download(
TenantShardId::unsharded(tenant_id),
Some(Duration::from_secs(10)),
)
.await?;
println!(
"Progress: {}/{} layers, {}/{} bytes",
progress.layers_downloaded,
progress.layers_total,
progress.bytes_downloaded,
progress.bytes_total
);
match status {
StatusCode::OK => {
println!("Download complete");
break;
}
StatusCode::ACCEPTED => {
// Loop
}
_ => {
anyhow::bail!("Unexpected download status: {status}");
}
}
}
}
}
Ok(())

View File

@@ -1,150 +0,0 @@
# Storage Controller
## Concepts
The storage controller sits between administrative API clients and pageservers, and handles the details of mapping tenants to pageserver tenant shards. For example, creating a tenant is one API call to the storage controller,
which is mapped into many API calls to many pageservers (for multiple shards, and for secondary locations).
It implements a pageserver-compatible API that may be used for CRUD operations on tenants and timelines, translating these requests into appropriate operations on the shards within a tenant, which may be on many different pageservers. Using this API, the storage controller may be used in the same way as the pageserver's administrative HTTP API, hiding
the underlying details of how data is spread across multiple nodes.
The storage controller also manages generations, high availability (via secondary locations) and live migrations for tenants under its management. This is done with a reconciliation loop pattern, where tenants have an “intent” state and a “reconcile” task that tries to make the outside world match the intent.
## APIs
The storage controllers HTTP server implements four logically separate APIs:
- `/v1/...` path is the pageserver-compatible API. This has to be at the path root because thats where clients expect to find it on a pageserver.
- `/control/v1/...` path is the storage controllers API, which enables operations such as registering and management pageservers, or executing shard splits.
- `/debug/v1/...` path contains endpoints which are either exclusively used in tests, or are for use by engineers when supporting a deployed system.
- `/upcall/v1/...` path contains endpoints that are called by pageservers. This includes the `/re-attach` and `/validate` APIs used by pageservers
to ensure data safety with generation numbers.
The API is authenticated with a JWT token, and tokens must have scope `pageserverapi` (i.e. the same scope as pageservers APIs).
See the `http.rs` file in the source for where the HTTP APIs are implemented.
## Database
The storage controller uses a postgres database to persist a subset of its state. Note that the storage controller does _not_ keep all its state in the database: this is a design choice to enable most operations to be done efficiently in memory, rather than having to read from the database. See `persistence.rs` for a more comprehensive comment explaining what we do and do not persist: a useful metaphor is that we persist objects like tenants and nodes, but we do not
persist the _relationships_ between them: the attachment state of a tenant's shards to nodes is kept in memory and
rebuilt on startup.
The file `[persistence.rs](http://persistence.rs)` contains all the code for accessing the database, and has a large doc comment that goes into more detail about exactly what we persist and why.
The `diesel` crate is used for defining models & migrations.
Running a local cluster with `cargo neon` automatically starts a vanilla postgress process to host the storage controllers database.
### Diesel tip: migrations
If you need to modify the database schema, heres how to create a migration:
- Install the diesel CLI with `cargo install diesel_cli`
- Use `diesel migration generate <name>` to create a new migration
- Populate the SQL files in the `migrations/` subdirectory
- Use `DATABASE_URL=... diesel migration run` to apply the migration you just wrote: this will update the `[schema.rs](http://schema.rs)` file automatically.
- This requires a running database: the easiest way to do that is to just run `cargo neon init ; cargo neon start`, which will leave a database available at `postgresql://localhost:1235/attachment_service`
- Commit the migration files and the changes to schema.rs
- If you need to iterate, you can rewind migrations with `diesel migration revert -a` and then `diesel migration run` again.
- The migrations are build into the storage controller binary, and automatically run at startup after it is deployed, so once youve committed a migration no further steps are needed.
## storcon_cli
The `storcon_cli` tool enables interactive management of the storage controller. This is usually
only necessary for debug, but may also be used to manage nodes (e.g. marking a node as offline).
`storcon_cli --help` includes details on commands.
# Deploying
This section is aimed at engineers deploying the storage controller outside of Neon's cloud platform, as
part of a self-hosted system.
_General note: since the default `neon_local` environment includes a storage controller, this is a useful
reference when figuring out deployment._
## Database
It is **essential** that the database used by the storage controller is durable (**do not store it on ephemeral
local disk**). This database contains pageserver generation numbers, which are essential to data safety on the pageserver.
The resource requirements for the database are very low: a single CPU core and 1GiB of memory should work well for most deployments. The physical size of the database is typically under a gigabyte.
Set the URL to the database using the `--database-url` CLI option.
There is no need to run migrations manually: the storage controller automatically applies migrations
when it starts up.
## Configure pageservers to use the storage controller
1. The pageserver `control_plane_api` and `control_plane_api_token` should be set in the `pageserver.toml` file. The API setting should
point to the "upcall" prefix, for example `http://127.0.0.1:1234/upcall/v1/` is used in neon_local clusters.
2. Create a `metadata.json` file in the same directory as `pageserver.toml`: this enables the pageserver to automatically register itself
with the storage controller when it starts up. See the example below for the format of this file.
### Example `metadata.json`
```
{"host":"acmehost.localdomain","http_host":"acmehost.localdomain","http_port":9898,"port":64000}
```
- `port` and `host` refer to the _postgres_ port and host, and these must be accessible from wherever
postgres runs.
- `http_port` and `http_host` refer to the pageserver's HTTP api, this must be accessible from where
the storage controller runs.
## Handle compute notifications.
The storage controller independently moves tenant attachments between pageservers in response to
changes such as a pageserver node becoming unavailable, or the tenant's shard count changing. To enable
postgres clients to handle such changes, the storage controller calls an API hook when a tenant's pageserver
location changes.
The hook is configured using the storage controller's `--compute-hook-url` CLI option. If the hook requires
JWT auth, the token may be provided with `--control-plane-jwt-token`. The hook will be invoked with a `PUT` request.
In the Neon cloud service, this hook is implemented by Neon's internal cloud control plane. In `neon_local` systems
the storage controller integrates directly with neon_local to reconfigure local postgres processes instead of calling
the compute hook.
When implementing an on-premise Neon deployment, you must implement a service that handles the compute hook. This is not complicated:
the request body has format of the `ComputeHookNotifyRequest` structure, provided below for convenience.
```
struct ComputeHookNotifyRequestShard {
node_id: NodeId,
shard_number: ShardNumber,
}
struct ComputeHookNotifyRequest {
tenant_id: TenantId,
stripe_size: Option<ShardStripeSize>,
shards: Vec<ComputeHookNotifyRequestShard>,
}
```
When a notification is received:
1. Modify postgres configuration for this tenant:
- set `neon.pageserver_connstr` to a comma-separated list of postgres connection strings to pageservers according to the `shards` list. The
shards identified by `NodeId` must be converted to the address+port of the node.
- if stripe_size is not None, set `neon.stripe_size` to this value
2. Send SIGHUP to postgres to reload configuration
3. Respond with 200 to the notification request. Do not return success if postgres was not updated: if an error is returned, the controller
will retry the notification until it succeeds..
### Example notification body
```
{
"tenant_id": "1f359dd625e519a1a4e8d7509690f6fc",
"stripe_size": 32768,
"shards": [
{"node_id": 344, "shard_number": 0},
{"node_id": 722, "shard_number": 1},
],
}
```

477
flake.lock generated
View File

@@ -1,477 +0,0 @@
{
"nodes": {
"cachix": {
"inputs": {
"devenv": "devenv_2",
"flake-compat": [
"devenv",
"flake-compat"
],
"nixpkgs": [
"devenv",
"nixpkgs"
],
"pre-commit-hooks": [
"devenv",
"pre-commit-hooks"
]
},
"locked": {
"lastModified": 1712055811,
"narHash": "sha256-7FcfMm5A/f02yyzuavJe06zLa9hcMHsagE28ADcmQvk=",
"owner": "cachix",
"repo": "cachix",
"rev": "02e38da89851ec7fec3356a5c04bc8349cae0e30",
"type": "github"
},
"original": {
"owner": "cachix",
"repo": "cachix",
"type": "github"
}
},
"devenv": {
"inputs": {
"cachix": "cachix",
"flake-compat": "flake-compat_2",
"nix": "nix_2",
"nixpkgs": "nixpkgs_2",
"pre-commit-hooks": "pre-commit-hooks"
},
"locked": {
"lastModified": 1714390914,
"narHash": "sha256-W5DFIifCjGYJXJzLU3RpqBeqes4zrf0Sr/6rwzTygPU=",
"owner": "cachix",
"repo": "devenv",
"rev": "34e6461fd76b5f51ad5f8214f5cf22c4cd7a196e",
"type": "github"
},
"original": {
"owner": "cachix",
"repo": "devenv",
"type": "github"
}
},
"devenv_2": {
"inputs": {
"flake-compat": [
"devenv",
"cachix",
"flake-compat"
],
"nix": "nix",
"nixpkgs": "nixpkgs",
"poetry2nix": "poetry2nix",
"pre-commit-hooks": [
"devenv",
"cachix",
"pre-commit-hooks"
]
},
"locked": {
"lastModified": 1708704632,
"narHash": "sha256-w+dOIW60FKMaHI1q5714CSibk99JfYxm0CzTinYWr+Q=",
"owner": "cachix",
"repo": "devenv",
"rev": "2ee4450b0f4b95a1b90f2eb5ffea98b90e48c196",
"type": "github"
},
"original": {
"owner": "cachix",
"ref": "python-rewrite",
"repo": "devenv",
"type": "github"
}
},
"flake-compat": {
"flake": false,
"locked": {
"lastModified": 1673956053,
"narHash": "sha256-4gtG9iQuiKITOjNQQeQIpoIB6b16fm+504Ch3sNKLd8=",
"owner": "edolstra",
"repo": "flake-compat",
"rev": "35bb57c0c8d8b62bbfd284272c928ceb64ddbde9",
"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"flake-compat_2": {
"flake": false,
"locked": {
"lastModified": 1696426674,
"narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
"owner": "edolstra",
"repo": "flake-compat",
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"type": "github"
},
"original": {
"owner": "edolstra",
"repo": "flake-compat",
"type": "github"
}
},
"flake-parts": {
"inputs": {
"nixpkgs-lib": "nixpkgs-lib"
},
"locked": {
"lastModified": 1712014858,
"narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
"type": "github"
},
"original": {
"id": "flake-parts",
"type": "indirect"
}
},
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1689068808,
"narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"flake-utils_2": {
"inputs": {
"systems": "systems_2"
},
"locked": {
"lastModified": 1710146030,
"narHash": "sha256-SZ5L6eA7HJ/nmkzGG7/ISclqe6oZdOZTNoesiInkXPQ=",
"owner": "numtide",
"repo": "flake-utils",
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},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"gitignore": {
"inputs": {
"nixpkgs": [
"devenv",
"pre-commit-hooks",
"nixpkgs"
]
},
"locked": {
"lastModified": 1709087332,
"narHash": "sha256-HG2cCnktfHsKV0s4XW83gU3F57gaTljL9KNSuG6bnQs=",
"owner": "hercules-ci",
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"rev": "637db329424fd7e46cf4185293b9cc8c88c95394",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "gitignore.nix",
"type": "github"
}
},
"nix": {
"inputs": {
"flake-compat": "flake-compat",
"nixpkgs": [
"devenv",
"cachix",
"devenv",
"nixpkgs"
],
"nixpkgs-regression": "nixpkgs-regression"
},
"locked": {
"lastModified": 1712911606,
"narHash": "sha256-BGvBhepCufsjcUkXnEEXhEVjwdJAwPglCC2+bInc794=",
"owner": "domenkozar",
"repo": "nix",
"rev": "b24a9318ea3f3600c1e24b4a00691ee912d4de12",
"type": "github"
},
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}
},
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"nixpkgs": [
"devenv",
"cachix",
"devenv",
"poetry2nix",
"nixpkgs"
]
},
"locked": {
"lastModified": 1688870561,
"narHash": "sha256-4UYkifnPEw1nAzqqPOTL2MvWtm3sNGw1UTYTalkTcGY=",
"owner": "nix-community",
"repo": "nix-github-actions",
"rev": "165b1650b753316aa7f1787f3005a8d2da0f5301",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "nix-github-actions",
"type": "github"
}
},
"nix_2": {
"inputs": {
"flake-compat": [
"devenv",
"flake-compat"
],
"nixpkgs": [
"devenv",
"nixpkgs"
],
"nixpkgs-regression": "nixpkgs-regression_2"
},
"locked": {
"lastModified": 1712911606,
"narHash": "sha256-BGvBhepCufsjcUkXnEEXhEVjwdJAwPglCC2+bInc794=",
"owner": "domenkozar",
"repo": "nix",
"rev": "b24a9318ea3f3600c1e24b4a00691ee912d4de12",
"type": "github"
},
"original": {
"owner": "domenkozar",
"ref": "devenv-2.21",
"repo": "nix",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1692808169,
"narHash": "sha256-x9Opq06rIiwdwGeK2Ykj69dNc2IvUH1fY55Wm7atwrE=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "9201b5ff357e781bf014d0330d18555695df7ba8",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-lib": {
"locked": {
"dir": "lib",
"lastModified": 1711703276,
"narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
"type": "github"
},
"original": {
"dir": "lib",
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs-regression": {
"locked": {
"lastModified": 1643052045,
"narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "github"
},
"original": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "github"
}
},
"nixpkgs-regression_2": {
"locked": {
"lastModified": 1643052045,
"narHash": "sha256-uGJ0VXIhWKGXxkeNnq4TvV3CIOkUJ3PAoLZ3HMzNVMw=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "github"
},
"original": {
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "215d4d0fd80ca5163643b03a33fde804a29cc1e2",
"type": "github"
}
},
"nixpkgs-stable": {
"locked": {
"lastModified": 1710695816,
"narHash": "sha256-3Eh7fhEID17pv9ZxrPwCLfqXnYP006RKzSs0JptsN84=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "614b4613980a522ba49f0d194531beddbb7220d3",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-23.11",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs_2": {
"locked": {
"lastModified": 1713361204,
"narHash": "sha256-TA6EDunWTkc5FvDCqU3W2T3SFn0gRZqh6D/hJnM02MM=",
"owner": "cachix",
"repo": "devenv-nixpkgs",
"rev": "285676e87ad9f0ca23d8714a6ab61e7e027020c6",
"type": "github"
},
"original": {
"owner": "cachix",
"ref": "rolling",
"repo": "devenv-nixpkgs",
"type": "github"
}
},
"nixpkgs_3": {
"locked": {
"lastModified": 1714314149,
"narHash": "sha256-yNAevSKF4krRWacmLUsLK7D7PlfuY3zF0lYnGYNi9vQ=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "cf8cc1201be8bc71b7cbbbdaf349b22f4f99c7ae",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixpkgs-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"poetry2nix": {
"inputs": {
"flake-utils": "flake-utils",
"nix-github-actions": "nix-github-actions",
"nixpkgs": [
"devenv",
"cachix",
"devenv",
"nixpkgs"
]
},
"locked": {
"lastModified": 1692876271,
"narHash": "sha256-IXfZEkI0Mal5y1jr6IRWMqK8GW2/f28xJenZIPQqkY0=",
"owner": "nix-community",
"repo": "poetry2nix",
"rev": "d5006be9c2c2417dafb2e2e5034d83fabd207ee3",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "poetry2nix",
"type": "github"
}
},
"pre-commit-hooks": {
"inputs": {
"flake-compat": [
"devenv",
"flake-compat"
],
"flake-utils": "flake-utils_2",
"gitignore": "gitignore",
"nixpkgs": [
"devenv",
"nixpkgs"
],
"nixpkgs-stable": "nixpkgs-stable"
},
"locked": {
"lastModified": 1713775815,
"narHash": "sha256-Wu9cdYTnGQQwtT20QQMg7jzkANKQjwBD9iccfGKkfls=",
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"rev": "2ac4dcbf55ed43f3be0bae15e181f08a57af24a4",
"type": "github"
},
"original": {
"owner": "cachix",
"repo": "pre-commit-hooks.nix",
"type": "github"
}
},
"root": {
"inputs": {
"devenv": "devenv",
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs_3"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
},
"systems_2": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

View File

@@ -1,58 +0,0 @@
{
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
devenv.url = "github:cachix/devenv";
};
outputs = inputs @ {
flake-parts,
nixpkgs,
...
}:
flake-parts.lib.mkFlake {inherit inputs;} {
imports = [
inputs.devenv.flakeModule
];
systems = nixpkgs.lib.systems.flakeExposed;
perSystem = {
config,
self',
inputs',
pkgs,
system,
lib,
...
}: {
devenv.shells.default = {
packages = with pkgs; [
rustup
postgresql_16
protobuf_26
icu74
pkg-config
bison
flex
openssl
libiconv
readline
zlib
curl
];
env.DISABLE_HOMEBREW = "1";
scripts = {
neonmake = {
description = "Build Neon";
exec =
if (pkgs.stdenv.isDarwin)
then "make -j`sysctl -n hw.logicalcpu` -s"
else "make -j`nproc` -s";
};
};
};
};
};
}

View File

@@ -256,16 +256,7 @@ fn update_rusage_metrics() {
DISK_IO_BYTES
.with_label_values(&["write"])
.set(rusage_stats.ru_oublock * BYTES_IN_BLOCK);
// On macOS, the unit of maxrss is bytes; on Linux, it's kilobytes. https://stackoverflow.com/a/59915669
#[cfg(target_os = "macos")]
{
MAXRSS_KB.set(rusage_stats.ru_maxrss / 1024);
}
#[cfg(not(target_os = "macos"))]
{
MAXRSS_KB.set(rusage_stats.ru_maxrss);
}
MAXRSS_KB.set(rusage_stats.ru_maxrss);
}
fn get_rusage_stats() -> libc::rusage {

View File

@@ -1,6 +1,5 @@
use anyhow::{bail, Result};
use byteorder::{ByteOrder, BE};
use bytes::BufMut;
use postgres_ffi::relfile_utils::{FSM_FORKNUM, VISIBILITYMAP_FORKNUM};
use postgres_ffi::{Oid, TransactionId};
use serde::{Deserialize, Serialize};
@@ -22,107 +21,15 @@ pub struct Key {
pub field6: u32,
}
/// The storage key size.
pub const KEY_SIZE: usize = 18;
/// The metadata key size. 2B fewer than the storage key size because field2 is not fully utilized.
/// See [`Key::to_i128`] for more information on the encoding.
pub const METADATA_KEY_SIZE: usize = 16;
/// The key prefix start range for the metadata keys. All keys with the first byte >= 0x40 is a metadata key.
pub const METADATA_KEY_BEGIN_PREFIX: u8 = 0x60;
pub const METADATA_KEY_END_PREFIX: u8 = 0x7F;
/// The (reserved) key prefix of relation sizes.
pub const RELATION_SIZE_PREFIX: u8 = 0x61;
/// The key prefix of AUX file keys.
pub const AUX_KEY_PREFIX: u8 = 0x62;
/// Check if the key falls in the range of metadata keys.
pub const fn is_metadata_key_slice(key: &[u8]) -> bool {
key[0] >= METADATA_KEY_BEGIN_PREFIX && key[0] < METADATA_KEY_END_PREFIX
}
impl Key {
/// Check if the key falls in the range of metadata keys.
pub const fn is_metadata_key(&self) -> bool {
self.field1 >= METADATA_KEY_BEGIN_PREFIX && self.field1 < METADATA_KEY_END_PREFIX
}
/// Encode a metadata key to a storage key.
pub fn from_metadata_key_fixed_size(key: &[u8; METADATA_KEY_SIZE]) -> Self {
assert!(is_metadata_key_slice(key), "key not in metadata key range");
Key {
field1: key[0],
field2: u16::from_be_bytes(key[1..3].try_into().unwrap()) as u32,
field3: u32::from_be_bytes(key[3..7].try_into().unwrap()),
field4: u32::from_be_bytes(key[7..11].try_into().unwrap()),
field5: key[11],
field6: u32::from_be_bytes(key[12..16].try_into().unwrap()),
}
}
/// Encode a metadata key to a storage key.
pub fn from_metadata_key(key: &[u8]) -> Self {
Self::from_metadata_key_fixed_size(key.try_into().expect("expect 16 byte metadata key"))
}
/// Extract a metadata key to a writer. The result should always be 16 bytes.
pub fn extract_metadata_key_to_writer(&self, mut writer: impl BufMut) {
writer.put_u8(self.field1);
assert!(self.field2 <= 0xFFFF);
writer.put_u16(self.field2 as u16);
writer.put_u32(self.field3);
writer.put_u32(self.field4);
writer.put_u8(self.field5);
writer.put_u32(self.field6);
}
/// Get the range of metadata keys.
pub fn metadata_key_range() -> Range<Self> {
Key {
field1: METADATA_KEY_BEGIN_PREFIX,
field2: 0,
field3: 0,
field4: 0,
field5: 0,
field6: 0,
}..Key {
field1: METADATA_KEY_END_PREFIX,
field2: 0,
field3: 0,
field4: 0,
field5: 0,
field6: 0,
}
}
/// Get the range of aux keys.
pub fn metadata_aux_key_range() -> Range<Self> {
Key {
field1: AUX_KEY_PREFIX,
field2: 0,
field3: 0,
field4: 0,
field5: 0,
field6: 0,
}..Key {
field1: AUX_KEY_PREFIX + 1,
field2: 0,
field3: 0,
field4: 0,
field5: 0,
field6: 0,
}
}
/// 'field2' is used to store tablespaceid for relations and small enum numbers for other relish.
/// As long as Neon does not support tablespace (because of lack of access to local file system),
/// we can assume that only some predefined namespace OIDs are used which can fit in u16
pub fn to_i128(&self) -> i128 {
assert!(self.field2 < 0xFFFF || self.field2 == 0xFFFFFFFF || self.field2 == 0x22222222);
(((self.field1 & 0x7F) as i128) << 120)
(((self.field1 & 0xf) as i128) << 120)
| (((self.field2 & 0xFFFF) as i128) << 104)
| ((self.field3 as i128) << 72)
| ((self.field4 as i128) << 40)
@@ -132,7 +39,7 @@ impl Key {
pub const fn from_i128(x: i128) -> Self {
Key {
field1: ((x >> 120) & 0x7F) as u8,
field1: ((x >> 120) & 0xf) as u8,
field2: ((x >> 104) & 0xFFFF) as u32,
field3: (x >> 72) as u32,
field4: (x >> 40) as u32,
@@ -141,11 +48,11 @@ impl Key {
}
}
pub const fn next(&self) -> Key {
pub fn next(&self) -> Key {
self.add(1)
}
pub const fn add(&self, x: u32) -> Key {
pub fn add(&self, x: u32) -> Key {
let mut key = *self;
let r = key.field6.overflowing_add(x);
@@ -174,8 +81,6 @@ impl Key {
key
}
/// Convert a 18B slice to a key. This function should not be used for metadata keys because field2 is handled differently.
/// Use [`Key::from_metadata_key`] instead.
pub fn from_slice(b: &[u8]) -> Self {
Key {
field1: b[0],
@@ -187,8 +92,6 @@ impl Key {
}
}
/// Convert a key to a 18B slice. This function should not be used for metadata keys because field2 is handled differently.
/// Use [`Key::extract_metadata_key_to_writer`] instead.
pub fn write_to_byte_slice(&self, buf: &mut [u8]) {
buf[0] = self.field1;
BE::write_u32(&mut buf[1..5], self.field2);
@@ -572,14 +475,12 @@ pub const AUX_FILES_KEY: Key = Key {
// Reverse mappings for a few Keys.
// These are needed by WAL redo manager.
pub const NON_INHERITED_RANGE: Range<Key> = AUX_FILES_KEY..AUX_FILES_KEY.next();
// AUX_FILES currently stores only data for logical replication (slots etc), and
// we don't preserve these on a branch because safekeepers can't follow timeline
// switch (and generally it likely should be optional), so ignore these.
#[inline(always)]
pub fn is_inherited_key(key: Key) -> bool {
!NON_INHERITED_RANGE.contains(&key)
key != AUX_FILES_KEY
}
#[inline(always)]
@@ -655,14 +556,11 @@ impl std::str::FromStr for Key {
mod tests {
use std::str::FromStr;
use crate::key::is_metadata_key_slice;
use crate::key::Key;
use rand::Rng;
use rand::SeedableRng;
use super::AUX_KEY_PREFIX;
#[test]
fn display_fromstr_bijection() {
let mut rng = rand::rngs::StdRng::seed_from_u64(42);
@@ -678,16 +576,4 @@ mod tests {
assert_eq!(key, Key::from_str(&format!("{key}")).unwrap());
}
#[test]
fn test_metadata_keys() {
let mut metadata_key = vec![AUX_KEY_PREFIX];
metadata_key.extend_from_slice(&[0xFF; 15]);
let encoded_key = Key::from_metadata_key(&metadata_key);
let mut output_key = Vec::new();
encoded_key.extract_metadata_key_to_writer(&mut output_key);
assert_eq!(metadata_key, output_key);
assert!(encoded_key.is_metadata_key());
assert!(is_metadata_key_slice(&metadata_key));
}
}

View File

@@ -15,13 +15,7 @@ pub struct KeySpace {
}
impl KeySpace {
/// Create a key space with a single range.
pub fn single(key_range: Range<Key>) -> Self {
Self {
ranges: vec![key_range],
}
}
///
/// Partition a key space into roughly chunks of roughly 'target_size' bytes
/// in each partition.
///
@@ -70,10 +64,6 @@ impl KeySpace {
KeyPartitioning { parts }
}
pub fn is_empty(&self) -> bool {
self.total_size() == 0
}
/// Merge another keyspace into the current one.
/// Note: the keyspaces must not ovelap (enforced via assertions)
pub fn merge(&mut self, other: &KeySpace) {
@@ -104,13 +94,12 @@ impl KeySpace {
/// Remove all keys in `other` from `self`.
/// This can involve splitting or removing of existing ranges.
/// Returns the removed keyspace
pub fn remove_overlapping_with(&mut self, other: &KeySpace) -> KeySpace {
pub fn remove_overlapping_with(&mut self, other: &KeySpace) {
let (self_start, self_end) = match (self.start(), self.end()) {
(Some(start), Some(end)) => (start, end),
_ => {
// self is empty
return KeySpace::default();
return;
}
};
@@ -123,37 +112,30 @@ impl KeySpace {
.skip_while(|range| self_start >= range.end)
.take_while(|range| self_end > range.start);
let mut removed_accum = KeySpaceRandomAccum::new();
for range in other_ranges {
while let Some(overlap_at) = self.overlaps_at(range) {
let overlapped = self.ranges[overlap_at].clone();
if overlapped.start < range.start && overlapped.end <= range.end {
// Higher part of the range is completely overlapped.
removed_accum.add_range(range.start..self.ranges[overlap_at].end);
self.ranges[overlap_at].end = range.start;
}
if overlapped.start >= range.start && overlapped.end > range.end {
// Lower part of the range is completely overlapped.
removed_accum.add_range(self.ranges[overlap_at].start..range.end);
self.ranges[overlap_at].start = range.end;
}
if overlapped.start < range.start && overlapped.end > range.end {
// Middle part of the range is overlapped.
removed_accum.add_range(range.clone());
self.ranges[overlap_at].end = range.start;
self.ranges
.insert(overlap_at + 1, range.end..overlapped.end);
}
if overlapped.start >= range.start && overlapped.end <= range.end {
// Whole range is overlapped
removed_accum.add_range(self.ranges[overlap_at].clone());
self.ranges.remove(overlap_at);
}
}
}
removed_accum.to_keyspace()
}
pub fn start(&self) -> Option<Key> {
@@ -188,11 +170,6 @@ impl KeySpace {
pub fn overlaps(&self, range: &Range<Key>) -> bool {
self.overlaps_at(range).is_some()
}
/// Check if the keyspace contains a key
pub fn contains(&self, key: &Key) -> bool {
self.overlaps(&(*key..key.next()))
}
}
///
@@ -576,16 +553,7 @@ mod tests {
Key::from_i128(11)..Key::from_i128(13),
],
};
let removed = key_space1.remove_overlapping_with(&key_space2);
let removed_expected = KeySpace {
ranges: vec![
Key::from_i128(2)..Key::from_i128(3),
Key::from_i128(6)..Key::from_i128(7),
Key::from_i128(11)..Key::from_i128(12),
],
};
assert_eq!(removed, removed_expected);
key_space1.remove_overlapping_with(&key_space2);
assert_eq!(
key_space1.ranges,
vec![
@@ -615,17 +583,7 @@ mod tests {
Key::from_i128(14)..Key::from_i128(17),
],
};
let removed = key_space1.remove_overlapping_with(&key_space2);
let removed_expected = KeySpace {
ranges: vec![
Key::from_i128(3)..Key::from_i128(5),
Key::from_i128(8)..Key::from_i128(10),
Key::from_i128(14)..Key::from_i128(15),
],
};
assert_eq!(removed, removed_expected);
key_space1.remove_overlapping_with(&key_space2);
assert_eq!(
key_space1.ranges,
vec![
@@ -652,11 +610,7 @@ mod tests {
Key::from_i128(15)..Key::from_i128(17),
],
};
let removed = key_space1.remove_overlapping_with(&key_space2);
let removed_expected = KeySpace::default();
assert_eq!(removed, removed_expected);
key_space1.remove_overlapping_with(&key_space2);
assert_eq!(
key_space1.ranges,
vec![
@@ -683,17 +637,7 @@ mod tests {
let key_space2 = KeySpace {
ranges: vec![Key::from_i128(9)..Key::from_i128(19)],
};
let removed = key_space1.remove_overlapping_with(&key_space2);
let removed_expected = KeySpace {
ranges: vec![
Key::from_i128(9)..Key::from_i128(10),
Key::from_i128(12)..Key::from_i128(15),
Key::from_i128(17)..Key::from_i128(19),
],
};
assert_eq!(removed, removed_expected);
key_space1.remove_overlapping_with(&key_space2);
assert_eq!(
key_space1.ranges,
vec![

View File

@@ -303,7 +303,6 @@ pub struct TenantConfig {
pub lazy_slru_download: Option<bool>,
pub timeline_get_throttle: Option<ThrottleConfig>,
pub image_layer_creation_check_threshold: Option<u8>,
pub switch_to_aux_file_v2: Option<bool>,
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
@@ -430,7 +429,6 @@ pub struct StatusResponse {
#[derive(Serialize, Deserialize, Debug)]
#[serde(deny_unknown_fields)]
pub struct TenantLocationConfigRequest {
#[serde(skip_serializing_if = "Option::is_none")]
pub tenant_id: Option<TenantShardId>,
#[serde(flatten)]
pub config: LocationConfig, // as we have a flattened field, we should reject all unknown fields in it
@@ -749,18 +747,10 @@ pub struct TimelineGcRequest {
pub gc_horizon: Option<u64>,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WalRedoManagerProcessStatus {
pub pid: u32,
/// The strum-generated `into::<&'static str>()` for `pageserver::walredo::ProcessKind`.
/// `ProcessKind` are a transitory thing, so, they have no enum representation in `pageserver_api`.
pub kind: Cow<'static, str>,
}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct WalRedoManagerStatus {
pub last_redo_at: Option<chrono::DateTime<chrono::Utc>>,
pub process: Option<WalRedoManagerProcessStatus>,
pub pid: Option<u32>,
}
/// The progress of a secondary tenant is mostly useful when doing a long running download: e.g. initiating
@@ -782,17 +772,6 @@ pub struct SecondaryProgress {
pub bytes_total: u64,
}
#[derive(Serialize, Deserialize, Debug)]
pub struct TenantScanRemoteStorageShard {
pub tenant_shard_id: TenantShardId,
pub generation: Option<u32>,
}
#[derive(Serialize, Deserialize, Debug, Default)]
pub struct TenantScanRemoteStorageResponse {
pub shards: Vec<TenantScanRemoteStorageShard>,
}
pub mod virtual_file {
#[derive(
Copy,
@@ -860,72 +839,39 @@ impl TryFrom<u8> for PagestreamBeMessageTag {
}
}
// In the V2 protocol version, a GetPage request contains two LSN values:
//
// request_lsn: Get the page version at this point in time. Lsn::Max is a special value that means
// "get the latest version present". It's used by the primary server, which knows that no one else
// is writing WAL. 'not_modified_since' must be set to a proper value even if request_lsn is
// Lsn::Max. Standby servers use the current replay LSN as the request LSN.
//
// not_modified_since: Hint to the pageserver that the client knows that the page has not been
// modified between 'not_modified_since' and the request LSN. It's always correct to set
// 'not_modified_since equal' to 'request_lsn' (unless Lsn::Max is used as the 'request_lsn'), but
// passing an earlier LSN can speed up the request, by allowing the pageserver to process the
// request without waiting for 'request_lsn' to arrive.
//
// The legacy V1 interface contained only one LSN, and a boolean 'latest' flag. The V1 interface was
// sufficient for the primary; the 'lsn' was equivalent to the 'not_modified_since' value, and
// 'latest' was set to true. The V2 interface was added because there was no correct way for a
// standby to request a page at a particular non-latest LSN, and also include the
// 'not_modified_since' hint. That led to an awkward choice of either using an old LSN in the
// request, if the standby knows that the page hasn't been modified since, and risk getting an error
// if that LSN has fallen behind the GC horizon, or requesting the current replay LSN, which could
// require the pageserver unnecessarily to wait for the WAL to arrive up to that point. The new V2
// interface allows sending both LSNs, and let the pageserver do the right thing. There is no
// difference in the responses between V1 and V2.
//
// The Request structs below reflect the V2 interface. If V1 is used, the parse function
// maps the old format requests to the new format.
//
#[derive(Clone, Copy)]
pub enum PagestreamProtocolVersion {
V1,
V2,
}
#[derive(Debug, PartialEq, Eq)]
pub struct PagestreamExistsRequest {
pub request_lsn: Lsn,
pub not_modified_since: Lsn,
pub latest: bool,
pub lsn: Lsn,
pub rel: RelTag,
}
#[derive(Debug, PartialEq, Eq)]
pub struct PagestreamNblocksRequest {
pub request_lsn: Lsn,
pub not_modified_since: Lsn,
pub latest: bool,
pub lsn: Lsn,
pub rel: RelTag,
}
#[derive(Debug, PartialEq, Eq)]
pub struct PagestreamGetPageRequest {
pub request_lsn: Lsn,
pub not_modified_since: Lsn,
pub latest: bool,
pub lsn: Lsn,
pub rel: RelTag,
pub blkno: u32,
}
#[derive(Debug, PartialEq, Eq)]
pub struct PagestreamDbSizeRequest {
pub request_lsn: Lsn,
pub not_modified_since: Lsn,
pub latest: bool,
pub lsn: Lsn,
pub dbnode: u32,
}
#[derive(Debug, PartialEq, Eq)]
pub struct PagestreamGetSlruSegmentRequest {
pub request_lsn: Lsn,
pub not_modified_since: Lsn,
pub latest: bool,
pub lsn: Lsn,
pub kind: u8,
pub segno: u32,
}
@@ -972,16 +918,14 @@ pub struct TenantHistorySize {
}
impl PagestreamFeMessage {
/// Serialize a compute -> pageserver message. This is currently only used in testing
/// tools. Always uses protocol version 2.
pub fn serialize(&self) -> Bytes {
let mut bytes = BytesMut::new();
match self {
Self::Exists(req) => {
bytes.put_u8(0);
bytes.put_u64(req.request_lsn.0);
bytes.put_u64(req.not_modified_since.0);
bytes.put_u8(u8::from(req.latest));
bytes.put_u64(req.lsn.0);
bytes.put_u32(req.rel.spcnode);
bytes.put_u32(req.rel.dbnode);
bytes.put_u32(req.rel.relnode);
@@ -990,8 +934,8 @@ impl PagestreamFeMessage {
Self::Nblocks(req) => {
bytes.put_u8(1);
bytes.put_u64(req.request_lsn.0);
bytes.put_u64(req.not_modified_since.0);
bytes.put_u8(u8::from(req.latest));
bytes.put_u64(req.lsn.0);
bytes.put_u32(req.rel.spcnode);
bytes.put_u32(req.rel.dbnode);
bytes.put_u32(req.rel.relnode);
@@ -1000,8 +944,8 @@ impl PagestreamFeMessage {
Self::GetPage(req) => {
bytes.put_u8(2);
bytes.put_u64(req.request_lsn.0);
bytes.put_u64(req.not_modified_since.0);
bytes.put_u8(u8::from(req.latest));
bytes.put_u64(req.lsn.0);
bytes.put_u32(req.rel.spcnode);
bytes.put_u32(req.rel.dbnode);
bytes.put_u32(req.rel.relnode);
@@ -1011,15 +955,15 @@ impl PagestreamFeMessage {
Self::DbSize(req) => {
bytes.put_u8(3);
bytes.put_u64(req.request_lsn.0);
bytes.put_u64(req.not_modified_since.0);
bytes.put_u8(u8::from(req.latest));
bytes.put_u64(req.lsn.0);
bytes.put_u32(req.dbnode);
}
Self::GetSlruSegment(req) => {
bytes.put_u8(4);
bytes.put_u64(req.request_lsn.0);
bytes.put_u64(req.not_modified_since.0);
bytes.put_u8(u8::from(req.latest));
bytes.put_u64(req.lsn.0);
bytes.put_u8(req.kind);
bytes.put_u32(req.segno);
}
@@ -1028,40 +972,18 @@ impl PagestreamFeMessage {
bytes.into()
}
pub fn parse<R: std::io::Read>(
body: &mut R,
protocol_version: PagestreamProtocolVersion,
) -> anyhow::Result<PagestreamFeMessage> {
pub fn parse<R: std::io::Read>(body: &mut R) -> anyhow::Result<PagestreamFeMessage> {
// TODO these gets can fail
// these correspond to the NeonMessageTag enum in pagestore_client.h
//
// TODO: consider using protobuf or serde bincode for less error prone
// serialization.
let msg_tag = body.read_u8()?;
let (request_lsn, not_modified_since) = match protocol_version {
PagestreamProtocolVersion::V2 => (
Lsn::from(body.read_u64::<BigEndian>()?),
Lsn::from(body.read_u64::<BigEndian>()?),
),
PagestreamProtocolVersion::V1 => {
// In the old protocol, each message starts with a boolean 'latest' flag,
// followed by 'lsn'. Convert that to the two LSNs, 'request_lsn' and
// 'not_modified_since', used in the new protocol version.
let latest = body.read_u8()? != 0;
let request_lsn = Lsn::from(body.read_u64::<BigEndian>()?);
if latest {
(Lsn::MAX, request_lsn) // get latest version
} else {
(request_lsn, request_lsn) // get version at specified LSN
}
}
};
// The rest of the messages are the same between V1 and V2
match msg_tag {
0 => Ok(PagestreamFeMessage::Exists(PagestreamExistsRequest {
request_lsn,
not_modified_since,
latest: body.read_u8()? != 0,
lsn: Lsn::from(body.read_u64::<BigEndian>()?),
rel: RelTag {
spcnode: body.read_u32::<BigEndian>()?,
dbnode: body.read_u32::<BigEndian>()?,
@@ -1070,8 +992,8 @@ impl PagestreamFeMessage {
},
})),
1 => Ok(PagestreamFeMessage::Nblocks(PagestreamNblocksRequest {
request_lsn,
not_modified_since,
latest: body.read_u8()? != 0,
lsn: Lsn::from(body.read_u64::<BigEndian>()?),
rel: RelTag {
spcnode: body.read_u32::<BigEndian>()?,
dbnode: body.read_u32::<BigEndian>()?,
@@ -1080,8 +1002,8 @@ impl PagestreamFeMessage {
},
})),
2 => Ok(PagestreamFeMessage::GetPage(PagestreamGetPageRequest {
request_lsn,
not_modified_since,
latest: body.read_u8()? != 0,
lsn: Lsn::from(body.read_u64::<BigEndian>()?),
rel: RelTag {
spcnode: body.read_u32::<BigEndian>()?,
dbnode: body.read_u32::<BigEndian>()?,
@@ -1091,14 +1013,14 @@ impl PagestreamFeMessage {
blkno: body.read_u32::<BigEndian>()?,
})),
3 => Ok(PagestreamFeMessage::DbSize(PagestreamDbSizeRequest {
request_lsn,
not_modified_since,
latest: body.read_u8()? != 0,
lsn: Lsn::from(body.read_u64::<BigEndian>()?),
dbnode: body.read_u32::<BigEndian>()?,
})),
4 => Ok(PagestreamFeMessage::GetSlruSegment(
PagestreamGetSlruSegmentRequest {
request_lsn,
not_modified_since,
latest: body.read_u8()? != 0,
lsn: Lsn::from(body.read_u64::<BigEndian>()?),
kind: body.read_u8()?,
segno: body.read_u32::<BigEndian>()?,
},
@@ -1226,8 +1148,8 @@ mod tests {
// Test serialization/deserialization of PagestreamFeMessage
let messages = vec![
PagestreamFeMessage::Exists(PagestreamExistsRequest {
request_lsn: Lsn(4),
not_modified_since: Lsn(3),
latest: true,
lsn: Lsn(4),
rel: RelTag {
forknum: 1,
spcnode: 2,
@@ -1236,8 +1158,8 @@ mod tests {
},
}),
PagestreamFeMessage::Nblocks(PagestreamNblocksRequest {
request_lsn: Lsn(4),
not_modified_since: Lsn(4),
latest: false,
lsn: Lsn(4),
rel: RelTag {
forknum: 1,
spcnode: 2,
@@ -1246,8 +1168,8 @@ mod tests {
},
}),
PagestreamFeMessage::GetPage(PagestreamGetPageRequest {
request_lsn: Lsn(4),
not_modified_since: Lsn(3),
latest: true,
lsn: Lsn(4),
rel: RelTag {
forknum: 1,
spcnode: 2,
@@ -1257,16 +1179,14 @@ mod tests {
blkno: 7,
}),
PagestreamFeMessage::DbSize(PagestreamDbSizeRequest {
request_lsn: Lsn(4),
not_modified_since: Lsn(3),
latest: true,
lsn: Lsn(4),
dbnode: 7,
}),
];
for msg in messages {
let bytes = msg.serialize();
let reconstructed =
PagestreamFeMessage::parse(&mut bytes.reader(), PagestreamProtocolVersion::V2)
.unwrap();
let reconstructed = PagestreamFeMessage::parse(&mut bytes.reader()).unwrap();
assert!(msg == reconstructed);
}
}

View File

@@ -5,93 +5,15 @@ use crate::{
models::ShardParameters,
};
use hex::FromHex;
use postgres_ffi::relfile_utils::INIT_FORKNUM;
use serde::{Deserialize, Serialize};
use utils::id::TenantId;
/// See docs/rfcs/031-sharding-static.md for an overview of sharding.
///
/// This module contains a variety of types used to represent the concept of sharding
/// a Neon tenant across multiple physical shards. Since there are quite a few of these,
/// we provide an summary here.
///
/// Types used to describe shards:
/// - [`ShardCount`] describes how many shards make up a tenant, plus the magic `unsharded` value
/// which identifies a tenant which is not shard-aware. This means its storage paths do not include
/// a shard suffix.
/// - [`ShardNumber`] is simply the zero-based index of a shard within a tenant.
/// - [`ShardIndex`] is the 2-tuple of `ShardCount` and `ShardNumber`, it's just like a `TenantShardId`
/// without the tenant ID. This is useful for things that are implicitly scoped to a particular
/// tenant, such as layer files.
/// - [`ShardIdentity`]` is the full description of a particular shard's parameters, in sufficient
/// detail to convert a [`Key`] to a [`ShardNumber`] when deciding where to write/read.
/// - The [`ShardSlug`] is a terse formatter for ShardCount and ShardNumber, written as
/// four hex digits. An unsharded tenant is `0000`.
/// - [`TenantShardId`] is the unique ID of a particular shard within a particular tenant
///
/// Types used to describe the parameters for data distribution in a sharded tenant:
/// - [`ShardStripeSize`] controls how long contiguous runs of [`Key`]s (stripes) are when distributed across
/// multiple shards. Its value is given in 8kiB pages.
/// - [`ShardLayout`] describes the data distribution scheme, and at time of writing is
/// always zero: this is provided for future upgrades that might introduce different
/// data distribution schemes.
///
/// Examples:
/// - A legacy unsharded tenant has one shard with ShardCount(0), ShardNumber(0), and its slug is 0000
/// - A single sharded tenant has one shard with ShardCount(1), ShardNumber(0), and its slug is 0001
/// - In a tenant with 4 shards, each shard has ShardCount(N), ShardNumber(i) where i in 0..N-1 (inclusive),
/// and their slugs are 0004, 0104, 0204, and 0304.
#[derive(Ord, PartialOrd, Eq, PartialEq, Clone, Copy, Serialize, Deserialize, Debug, Hash)]
pub struct ShardNumber(pub u8);
#[derive(Ord, PartialOrd, Eq, PartialEq, Clone, Copy, Serialize, Deserialize, Debug, Hash)]
pub struct ShardCount(u8);
/// Combination of ShardNumber and ShardCount. For use within the context of a particular tenant,
/// when we need to know which shard we're dealing with, but do not need to know the full
/// ShardIdentity (because we won't be doing any page->shard mapping), and do not need to know
/// the fully qualified TenantShardId.
#[derive(Eq, PartialEq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct ShardIndex {
pub shard_number: ShardNumber,
pub shard_count: ShardCount,
}
/// The ShardIdentity contains enough information to map a [`Key`] to a [`ShardNumber`],
/// and to check whether that [`ShardNumber`] is the same as the current shard.
#[derive(Clone, Copy, Serialize, Deserialize, Eq, PartialEq, Debug)]
pub struct ShardIdentity {
pub number: ShardNumber,
pub count: ShardCount,
pub stripe_size: ShardStripeSize,
layout: ShardLayout,
}
/// Formatting helper, for generating the `shard_id` label in traces.
struct ShardSlug<'a>(&'a TenantShardId);
/// TenantShardId globally identifies a particular shard in a particular tenant.
///
/// These are written as `<TenantId>-<ShardSlug>`, for example:
/// # The second shard in a two-shard tenant
/// 072f1291a5310026820b2fe4b2968934-0102
///
/// If the `ShardCount` is _unsharded_, the `TenantShardId` is written without
/// a shard suffix and is equivalent to the encoding of a `TenantId`: this enables
/// an unsharded [`TenantShardId`] to be used interchangably with a [`TenantId`].
///
/// The human-readable encoding of an unsharded TenantShardId, such as used in API URLs,
/// is both forward and backward compatible with TenantId: a legacy TenantId can be
/// decoded as a TenantShardId, and when re-encoded it will be parseable
/// as a TenantId.
#[derive(Eq, PartialEq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct TenantShardId {
pub tenant_id: TenantId,
pub shard_number: ShardNumber,
pub shard_count: ShardCount,
}
impl ShardCount {
pub const MAX: Self = Self(u8::MAX);
@@ -116,7 +38,6 @@ impl ShardCount {
self.0
}
///
pub fn is_unsharded(&self) -> bool {
self.0 == 0
}
@@ -132,6 +53,33 @@ impl ShardNumber {
pub const MAX: Self = Self(u8::MAX);
}
/// TenantShardId identify the units of work for the Pageserver.
///
/// These are written as `<tenant_id>-<shard number><shard-count>`, for example:
///
/// # The second shard in a two-shard tenant
/// 072f1291a5310026820b2fe4b2968934-0102
///
/// Historically, tenants could not have multiple shards, and were identified
/// by TenantId. To support this, TenantShardId has a special legacy
/// mode where `shard_count` is equal to zero: this represents a single-sharded
/// tenant which should be written as a TenantId with no suffix.
///
/// The human-readable encoding of TenantShardId, such as used in API URLs,
/// is both forward and backward compatible: a legacy TenantId can be
/// decoded as a TenantShardId, and when re-encoded it will be parseable
/// as a TenantId.
///
/// Note that the binary encoding is _not_ backward compatible, because
/// at the time sharding is introduced, there are no existing binary structures
/// containing TenantId that we need to handle.
#[derive(Eq, PartialEq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct TenantShardId {
pub tenant_id: TenantId,
pub shard_number: ShardNumber,
pub shard_count: ShardCount,
}
impl TenantShardId {
pub fn unsharded(tenant_id: TenantId) -> Self {
Self {
@@ -163,13 +111,10 @@ impl TenantShardId {
}
/// Convenience for code that has special behavior on the 0th shard.
pub fn is_shard_zero(&self) -> bool {
pub fn is_zero(&self) -> bool {
self.shard_number == ShardNumber(0)
}
/// The "unsharded" value is distinct from simply having a single shard: it represents
/// a tenant which is not shard-aware at all, and whose storage paths will not include
/// a shard suffix.
pub fn is_unsharded(&self) -> bool {
self.shard_number == ShardNumber(0) && self.shard_count.is_unsharded()
}
@@ -205,6 +150,9 @@ impl TenantShardId {
}
}
/// Formatting helper
struct ShardSlug<'a>(&'a TenantShardId);
impl<'a> std::fmt::Display for ShardSlug<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(
@@ -274,6 +222,16 @@ impl From<[u8; 18]> for TenantShardId {
}
}
/// For use within the context of a particular tenant, when we need to know which
/// shard we're dealing with, but do not need to know the full ShardIdentity (because
/// we won't be doing any page->shard mapping), and do not need to know the fully qualified
/// TenantShardId.
#[derive(Eq, PartialEq, PartialOrd, Ord, Clone, Copy, Hash)]
pub struct ShardIndex {
pub shard_number: ShardNumber,
pub shard_count: ShardCount,
}
impl ShardIndex {
pub fn new(number: ShardNumber, count: ShardCount) -> Self {
Self {
@@ -288,9 +246,6 @@ impl ShardIndex {
}
}
/// The "unsharded" value is distinct from simply having a single shard: it represents
/// a tenant which is not shard-aware at all, and whose storage paths will not include
/// a shard suffix.
pub fn is_unsharded(&self) -> bool {
self.shard_number == ShardNumber(0) && self.shard_count == ShardCount(0)
}
@@ -358,8 +313,6 @@ impl Serialize for TenantShardId {
if serializer.is_human_readable() {
serializer.collect_str(self)
} else {
// Note: while human encoding of [`TenantShardId`] is backward and forward
// compatible, this binary encoding is not.
let mut packed: [u8; 18] = [0; 18];
packed[0..16].clone_from_slice(&self.tenant_id.as_arr());
packed[16] = self.shard_number.0;
@@ -437,6 +390,16 @@ const LAYOUT_BROKEN: ShardLayout = ShardLayout(255);
/// Default stripe size in pages: 256MiB divided by 8kiB page size.
const DEFAULT_STRIPE_SIZE: ShardStripeSize = ShardStripeSize(256 * 1024 / 8);
/// The ShardIdentity contains the information needed for one member of map
/// to resolve a key to a shard, and then check whether that shard is ==self.
#[derive(Clone, Copy, Serialize, Deserialize, Eq, PartialEq, Debug)]
pub struct ShardIdentity {
pub number: ShardNumber,
pub count: ShardCount,
pub stripe_size: ShardStripeSize,
layout: ShardLayout,
}
#[derive(thiserror::Error, Debug, PartialEq, Eq)]
pub enum ShardConfigError {
#[error("Invalid shard count")]
@@ -476,9 +439,6 @@ impl ShardIdentity {
}
}
/// The "unsharded" value is distinct from simply having a single shard: it represents
/// a tenant which is not shard-aware at all, and whose storage paths will not include
/// a shard suffix.
pub fn is_unsharded(&self) -> bool {
self.number == ShardNumber(0) && self.count == ShardCount(0)
}
@@ -527,8 +487,6 @@ impl ShardIdentity {
}
/// Return true if the key should be ingested by this shard
///
/// Shards must ingest _at least_ keys which return true from this check.
pub fn is_key_local(&self, key: &Key) -> bool {
assert!(!self.is_broken());
if self.count < ShardCount(2) || (key_is_shard0(key) && self.number == ShardNumber(0)) {
@@ -538,28 +496,8 @@ impl ShardIdentity {
}
}
/// Special case for issue `<https://github.com/neondatabase/neon/issues/7451>`
///
/// When we fail to read a forknum block, this function tells us whether we may ignore the error
/// as a symptom of that issue.
pub fn is_key_buggy_forknum(&self, key: &Key) -> bool {
if !is_rel_block_key(key) || key.field5 != INIT_FORKNUM {
return false;
}
let mut hash = murmurhash32(key.field4);
hash = hash_combine(hash, murmurhash32(key.field6 / self.stripe_size.0));
let mapped_shard = ShardNumber((hash % self.count.0 as u32) as u8);
// The key may be affected by issue #7454: it is an initfork and it would not
// have mapped to shard 0 until we fixed that issue.
mapped_shard != ShardNumber(0)
}
/// Return true if the key should be discarded if found in this shard's
/// data store, e.g. during compaction after a split.
///
/// Shards _may_ drop keys which return false here, but are not obliged to.
/// data store, e.g. during compaction after a split
pub fn is_key_disposable(&self, key: &Key) -> bool {
if key_is_shard0(key) {
// Q: Why can't we dispose of shard0 content if we're not shard 0?
@@ -585,7 +523,7 @@ impl ShardIdentity {
/// Convenience for checking if this identity is the 0th shard in a tenant,
/// for special cases on shard 0 such as ingesting relation sizes.
pub fn is_shard_zero(&self) -> bool {
pub fn is_zero(&self) -> bool {
self.number == ShardNumber(0)
}
}
@@ -668,13 +606,7 @@ fn key_is_shard0(key: &Key) -> bool {
// relation pages are distributed to shards other than shard zero. Everything else gets
// stored on shard 0. This guarantees that shard 0 can independently serve basebackup
// requests, and any request other than those for particular blocks in relations.
//
// The only exception to this rule is "initfork" data -- this relates to postgres's UNLOGGED table
// type. These are special relations, usually with only 0 or 1 blocks, and we store them on shard 0
// because they must be included in basebackups.
let is_initfork = key.field5 == INIT_FORKNUM;
!is_rel_block_key(key) || is_initfork
!is_rel_block_key(key)
}
/// Provide the same result as the function in postgres `hashfn.h` with the same name

View File

@@ -118,9 +118,7 @@ pub use v14::bindings::{TimeLineID, TimestampTz, XLogRecPtr, XLogSegNo};
// Likewise for these, although the assumption that these don't change is a little more iffy.
pub use v14::bindings::{MultiXactOffset, MultiXactStatus};
pub use v14::bindings::{PageHeaderData, XLogRecord};
pub use v14::xlog_utils::{
XLOG_SIZE_OF_XLOG_LONG_PHD, XLOG_SIZE_OF_XLOG_RECORD, XLOG_SIZE_OF_XLOG_SHORT_PHD,
};
pub use v14::xlog_utils::{XLOG_SIZE_OF_XLOG_RECORD, XLOG_SIZE_OF_XLOG_SHORT_PHD};
pub use v14::bindings::{CheckPoint, ControlFileData};

View File

@@ -4,9 +4,7 @@ use log::*;
use postgres::types::PgLsn;
use postgres::Client;
use postgres_ffi::{WAL_SEGMENT_SIZE, XLOG_BLCKSZ};
use postgres_ffi::{
XLOG_SIZE_OF_XLOG_LONG_PHD, XLOG_SIZE_OF_XLOG_RECORD, XLOG_SIZE_OF_XLOG_SHORT_PHD,
};
use postgres_ffi::{XLOG_SIZE_OF_XLOG_RECORD, XLOG_SIZE_OF_XLOG_SHORT_PHD};
use std::path::{Path, PathBuf};
use std::process::Command;
use std::time::{Duration, Instant};
@@ -264,21 +262,11 @@ fn craft_internal<C: postgres::GenericClient>(
intermediate_lsns.insert(0, initial_lsn);
}
// Some records may be not flushed, e.g. non-transactional logical messages. Flush now.
// Some records may be not flushed, e.g. non-transactional logical messages.
//
// If the previous WAL record ended exactly at page boundary, pg_current_wal_insert_lsn
// returns the position just after the page header on the next page. That's where the next
// record will be inserted. But the page header hasn't actually been written to the WAL
// yet, and if you try to flush it, you get a "request to flush past end of generated WAL"
// error. Because of that, if the insert location is just after a page header, back off to
// previous page boundary.
let mut lsn = u64::from(client.pg_current_wal_insert_lsn()?);
if lsn % WAL_SEGMENT_SIZE as u64 == XLOG_SIZE_OF_XLOG_LONG_PHD as u64 {
lsn -= XLOG_SIZE_OF_XLOG_LONG_PHD as u64;
} else if lsn % XLOG_BLCKSZ as u64 == XLOG_SIZE_OF_XLOG_SHORT_PHD as u64 {
lsn -= XLOG_SIZE_OF_XLOG_SHORT_PHD as u64;
}
client.execute("select neon_xlogflush($1)", &[&PgLsn::from(lsn)])?;
// Note: this is broken if pg_current_wal_insert_lsn is at page boundary
// because pg_current_wal_insert_lsn skips page headers.
client.execute("select neon_xlogflush(pg_current_wal_insert_lsn())", &[])?;
Ok(intermediate_lsns)
}
@@ -332,49 +320,38 @@ impl Crafter for LastWalRecordXlogSwitchEndsOnPageBoundary {
client.execute("CREATE table t(x int)", &[])?;
// Add padding so the XLOG_SWITCH record ends exactly on XLOG_BLCKSZ boundary. We
// will use carefully-sized logical messages to advance WAL insert location such
// that there is just enough space on the page for the XLOG_SWITCH record.
loop {
// We start with measuring how much WAL it takes for one logical message,
// considering all alignments and headers.
// Add padding so the XLOG_SWITCH record ends exactly on XLOG_BLCKSZ boundary.
// We will use logical message as the padding. We start with detecting how much WAL
// it takes for one logical message, considering all alignments and headers.
let base_wal_advance = {
let before_lsn = client.pg_current_wal_insert_lsn()?;
// Small non-empty message bigger than few bytes is more likely than an empty
// message to have the same format as the big padding message.
client.execute(
"SELECT pg_logical_emit_message(false, 'swch', REPEAT('a', 10))",
&[],
)?;
let after_lsn = client.pg_current_wal_insert_lsn()?;
// Did the record cross a page boundary? If it did, start over. Crossing a
// page boundary adds to the apparent size of the record because of the page
// header, which throws off the calculation.
if u64::from(before_lsn) / XLOG_BLCKSZ as u64
!= u64::from(after_lsn) / XLOG_BLCKSZ as u64
{
continue;
}
// base_size is the size of a logical message without the payload
let base_size = u64::from(after_lsn) - u64::from(before_lsn) - 10;
// Is there enough space on the page for another logical message and an
// XLOG_SWITCH? If not, start over.
let page_remain = XLOG_BLCKSZ as u64 - u64::from(after_lsn) % XLOG_BLCKSZ as u64;
if page_remain < base_size - XLOG_SIZE_OF_XLOG_RECORD as u64 {
continue;
}
// We will write another logical message, such that after the logical message
// record, there will be space for exactly one XLOG_SWITCH. How large should
// the logical message's payload be? An XLOG_SWITCH record has no data => its
// size is exactly XLOG_SIZE_OF_XLOG_RECORD.
let repeats = page_remain - base_size - XLOG_SIZE_OF_XLOG_RECORD as u64;
client.execute(
"SELECT pg_logical_emit_message(false, 'swch', REPEAT('a', $1))",
&[&(repeats as i32)],
)?;
break;
// The XLOG_SWITCH record has no data => its size is exactly XLOG_SIZE_OF_XLOG_RECORD.
(u64::from(client.pg_current_wal_insert_lsn()?) - u64::from(before_lsn)) as usize
+ XLOG_SIZE_OF_XLOG_RECORD
};
let mut remaining_lsn =
XLOG_BLCKSZ - u64::from(client.pg_current_wal_insert_lsn()?) as usize % XLOG_BLCKSZ;
if remaining_lsn < base_wal_advance {
remaining_lsn += XLOG_BLCKSZ;
}
let repeats = 10 + remaining_lsn - base_wal_advance;
info!(
"current_wal_insert_lsn={}, remaining_lsn={}, base_wal_advance={}, repeats={}",
client.pg_current_wal_insert_lsn()?,
remaining_lsn,
base_wal_advance,
repeats
);
client.execute(
"SELECT pg_logical_emit_message(false, 'swch', REPEAT('a', $1))",
&[&(repeats as i32)],
)?;
info!(
"current_wal_insert_lsn={}, XLOG_SIZE_OF_XLOG_RECORD={}",
client.pg_current_wal_insert_lsn()?,

View File

@@ -21,13 +21,11 @@ use std::{
fmt::Debug,
num::{NonZeroU32, NonZeroUsize},
pin::Pin,
str::FromStr,
sync::Arc,
time::{Duration, SystemTime},
};
use anyhow::{bail, Context};
use aws_sdk_s3::types::StorageClass;
use camino::{Utf8Path, Utf8PathBuf};
use bytes::Bytes;
@@ -136,11 +134,6 @@ impl RemotePath {
pub fn strip_prefix(&self, p: &RemotePath) -> Result<&Utf8Path, std::path::StripPrefixError> {
self.0.strip_prefix(&p.0)
}
pub fn add_trailing_slash(&self) -> Self {
// Unwrap safety inputs are guararnteed to be valid UTF-8
Self(format!("{}/", self.0).try_into().unwrap())
}
}
/// We don't need callers to be able to pass arbitrary delimiters: just control
@@ -164,21 +157,47 @@ pub struct Listing {
/// providing basic CRUD operations for storage files.
#[allow(async_fn_in_trait)]
pub trait RemoteStorage: Send + Sync + 'static {
/// List objects in remote storage, with semantics matching AWS S3's ListObjectsV2.
/// (see `<https://docs.aws.amazon.com/AmazonS3/latest/API/API_ListObjectsV2.html>`)
///
/// Note that the prefix is relative to any `prefix_in_bucket` configured for the client, not
/// from the absolute root of the bucket.
///
/// `mode` configures whether to use a delimiter. Without a delimiter all keys
/// within the prefix are listed in the `keys` of the result. With a delimiter, any "directories" at the top level of
/// the prefix are returned in the `prefixes` of the result, and keys in the top level of the prefix are
/// returned in `keys` ().
///
/// `max_keys` controls the maximum number of keys that will be returned. If this is None, this function
/// will iteratively call listobjects until it runs out of keys. Note that this is not safe to use on
/// unlimted size buckets, as the full list of objects is allocated into a monolithic data structure.
/// Lists all top level subdirectories for a given prefix
/// Note: here we assume that if the prefix is passed it was obtained via remote_object_id
/// which already takes into account any kind of global prefix (prefix_in_bucket for S3 or storage_root for LocalFS)
/// so this method doesnt need to.
async fn list_prefixes(
&self,
prefix: Option<&RemotePath>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
let result = self
.list(prefix, ListingMode::WithDelimiter, None, cancel)
.await?
.prefixes;
Ok(result)
}
/// Lists all files in directory "recursively"
/// (not really recursively, because AWS has a flat namespace)
/// Note: This is subtely different than list_prefixes,
/// because it is for listing files instead of listing
/// names sharing common prefixes.
/// For example,
/// list_files("foo/bar") = ["foo/bar/cat123.txt",
/// "foo/bar/cat567.txt", "foo/bar/dog123.txt", "foo/bar/dog456.txt"]
/// whereas,
/// list_prefixes("foo/bar/") = ["cat", "dog"]
/// See `test_real_s3.rs` for more details.
///
/// max_keys limits max number of keys returned; None means unlimited.
async fn list_files(
&self,
prefix: Option<&RemotePath>,
max_keys: Option<NonZeroU32>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
let result = self
.list(prefix, ListingMode::NoDelimiter, max_keys, cancel)
.await?
.keys;
Ok(result)
}
async fn list(
&self,
prefix: Option<&RemotePath>,
@@ -317,6 +336,41 @@ impl<Other: RemoteStorage> GenericRemoteStorage<Arc<Other>> {
}
}
// A function for listing all the files in a "directory"
// Example:
// list_files("foo/bar") = ["foo/bar/a.txt", "foo/bar/b.txt"]
//
// max_keys limits max number of keys returned; None means unlimited.
pub async fn list_files(
&self,
folder: Option<&RemotePath>,
max_keys: Option<NonZeroU32>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
match self {
Self::LocalFs(s) => s.list_files(folder, max_keys, cancel).await,
Self::AwsS3(s) => s.list_files(folder, max_keys, cancel).await,
Self::AzureBlob(s) => s.list_files(folder, max_keys, cancel).await,
Self::Unreliable(s) => s.list_files(folder, max_keys, cancel).await,
}
}
// lists common *prefixes*, if any of files
// Example:
// list_prefixes("foo123","foo567","bar123","bar432") = ["foo", "bar"]
pub async fn list_prefixes(
&self,
prefix: Option<&RemotePath>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
match self {
Self::LocalFs(s) => s.list_prefixes(prefix, cancel).await,
Self::AwsS3(s) => s.list_prefixes(prefix, cancel).await,
Self::AzureBlob(s) => s.list_prefixes(prefix, cancel).await,
Self::Unreliable(s) => s.list_prefixes(prefix, cancel).await,
}
}
/// See [`RemoteStorage::upload`]
pub async fn upload(
&self,
@@ -565,7 +619,6 @@ pub struct S3Config {
/// See [`DEFAULT_REMOTE_STORAGE_S3_CONCURRENCY_LIMIT`] for more details.
pub concurrency_limit: NonZeroUsize,
pub max_keys_per_list_response: Option<i32>,
pub upload_storage_class: Option<StorageClass>,
}
impl Debug for S3Config {
@@ -694,18 +747,6 @@ impl RemoteStorageConfig {
endpoint,
concurrency_limit,
max_keys_per_list_response,
upload_storage_class: toml
.get("upload_storage_class")
.map(|prefix_in_bucket| -> anyhow::Result<_> {
let s = parse_toml_string("upload_storage_class", prefix_in_bucket)?;
let storage_class = StorageClass::from_str(&s).expect("infallible");
#[allow(deprecated)]
if matches!(storage_class, StorageClass::Unknown(_)) {
bail!("Specified storage class unknown to SDK: '{s}'. Allowed values: {:?}", StorageClass::values());
}
Ok(storage_class)
})
.transpose()?,
})
}
(_, _, _, Some(_), None) => {

View File

@@ -5,9 +5,11 @@
//! volume is mounted to the local FS.
use std::{
collections::HashSet,
borrow::Cow,
future::Future,
io::ErrorKind,
num::NonZeroU32,
pin::Pin,
time::{Duration, SystemTime, UNIX_EPOCH},
};
@@ -20,11 +22,11 @@ use tokio::{
io::{self, AsyncReadExt, AsyncSeekExt, AsyncWriteExt},
};
use tokio_util::{io::ReaderStream, sync::CancellationToken};
use utils::crashsafe::path_with_suffix_extension;
use tracing::*;
use utils::{crashsafe::path_with_suffix_extension, fs_ext::is_directory_empty};
use crate::{
Download, DownloadError, Listing, ListingMode, RemotePath, TimeTravelError, TimeoutOrCancel,
REMOTE_STORAGE_PREFIX_SEPARATOR,
};
use super::{RemoteStorage, StorageMetadata};
@@ -91,47 +93,7 @@ impl LocalFs {
#[cfg(test)]
async fn list_all(&self) -> anyhow::Result<Vec<RemotePath>> {
use std::{future::Future, pin::Pin};
fn get_all_files<'a, P>(
directory_path: P,
) -> Pin<Box<dyn Future<Output = anyhow::Result<Vec<Utf8PathBuf>>> + Send + Sync + 'a>>
where
P: AsRef<Utf8Path> + Send + Sync + 'a,
{
Box::pin(async move {
let directory_path = directory_path.as_ref();
if directory_path.exists() {
if directory_path.is_dir() {
let mut paths = Vec::new();
let mut dir_contents = fs::read_dir(directory_path).await?;
while let Some(dir_entry) = dir_contents.next_entry().await? {
let file_type = dir_entry.file_type().await?;
let entry_path =
Utf8PathBuf::from_path_buf(dir_entry.path()).map_err(|pb| {
anyhow::Error::msg(format!(
"non-Unicode path: {}",
pb.to_string_lossy()
))
})?;
if file_type.is_symlink() {
tracing::debug!("{entry_path:?} is a symlink, skipping")
} else if file_type.is_dir() {
paths.extend(get_all_files(&entry_path).await?.into_iter())
} else {
paths.push(entry_path);
}
}
Ok(paths)
} else {
bail!("Path {directory_path:?} is not a directory")
}
} else {
Ok(Vec::new())
}
})
}
Ok(get_all_files(&self.storage_root)
Ok(get_all_files(&self.storage_root, true)
.await?
.into_iter()
.map(|path| {
@@ -158,14 +120,6 @@ impl LocalFs {
// S3 object list prefixes can be arbitrary strings, but when reading
// the local filesystem we need a directory to start calling read_dir on.
let mut initial_dir = full_path.clone();
// If there's no trailing slash, we have to start looking from one above: even if
// `initial_dir` is a directory, we should still list any prefixes in the parent
// that start with the same string.
if !full_path.to_string().ends_with('/') {
initial_dir.pop();
}
loop {
// Did we make it to the root?
if initial_dir.parent().is_none() {
@@ -341,66 +295,61 @@ impl RemoteStorage for LocalFs {
let op = async {
let mut result = Listing::default();
// Filter out directories: in S3 directories don't exist, only the keys within them do.
let keys = self
.list_recursive(prefix)
if let ListingMode::NoDelimiter = mode {
let keys = self
.list_recursive(prefix)
.await
.map_err(DownloadError::Other)?;
result.keys = keys
.into_iter()
.filter(|k| {
let path = k.with_base(&self.storage_root);
!path.is_dir()
})
.collect();
if let Some(max_keys) = max_keys {
result.keys.truncate(max_keys.get() as usize);
}
return Ok(result);
}
let path = match prefix {
Some(prefix) => Cow::Owned(prefix.with_base(&self.storage_root)),
None => Cow::Borrowed(&self.storage_root),
};
let prefixes_to_filter = get_all_files(path.as_ref(), false)
.await
.map_err(DownloadError::Other)?;
let keys = keys
.into_iter()
.filter(|k| {
let path = k.with_base(&self.storage_root);
!path.is_dir()
})
.collect();
if let ListingMode::NoDelimiter = mode {
result.keys = keys;
} else {
let mut prefixes = HashSet::new();
for key in keys {
// If the part after the prefix includes a "/", take only the first part and put it in `prefixes`.
let relative_key = if let Some(prefix) = prefix {
let mut prefix = prefix.clone();
// We only strip the dirname of the prefix, so that when we strip it from the start of keys we
// end up with full file/dir names.
let prefix_full_local_path = prefix.with_base(&self.storage_root);
let has_slash = prefix.0.to_string().ends_with('/');
let strip_prefix = if prefix_full_local_path.is_dir() && has_slash {
prefix
} else {
prefix.0.pop();
prefix
};
RemotePath::new(key.strip_prefix(&strip_prefix).unwrap()).unwrap()
} else {
key
};
let relative_key = format!("{}", relative_key);
if relative_key.contains(REMOTE_STORAGE_PREFIX_SEPARATOR) {
let first_part = relative_key
.split(REMOTE_STORAGE_PREFIX_SEPARATOR)
.next()
.unwrap()
.to_owned();
prefixes.insert(first_part);
} else {
result
.keys
.push(RemotePath::from_string(&relative_key).unwrap());
}
// filter out empty directories to mirror s3 behavior.
for prefix in prefixes_to_filter {
if prefix.is_dir()
&& is_directory_empty(&prefix)
.await
.map_err(DownloadError::Other)?
{
continue;
}
let stripped = prefix
.strip_prefix(&self.storage_root)
.context("Failed to strip prefix")
.and_then(RemotePath::new)
.expect(
"We list files for storage root, hence should be able to remote the prefix",
);
if prefix.is_dir() {
result.prefixes.push(stripped);
} else {
result.keys.push(stripped);
}
result.prefixes = prefixes
.into_iter()
.map(|s| RemotePath::from_string(&s).unwrap())
.collect();
}
if let Some(max_keys) = max_keys {
result.keys.truncate(max_keys.get() as usize);
}
Ok(result)
};
@@ -611,6 +560,50 @@ fn storage_metadata_path(original_path: &Utf8Path) -> Utf8PathBuf {
path_with_suffix_extension(original_path, "metadata")
}
fn get_all_files<'a, P>(
directory_path: P,
recursive: bool,
) -> Pin<Box<dyn Future<Output = anyhow::Result<Vec<Utf8PathBuf>>> + Send + Sync + 'a>>
where
P: AsRef<Utf8Path> + Send + Sync + 'a,
{
Box::pin(async move {
let directory_path = directory_path.as_ref();
if directory_path.exists() {
if directory_path.is_dir() {
let mut paths = Vec::new();
let mut dir_contents = fs::read_dir(directory_path).await?;
while let Some(dir_entry) = dir_contents.next_entry().await? {
let file_type = dir_entry.file_type().await?;
let entry_path =
Utf8PathBuf::from_path_buf(dir_entry.path()).map_err(|pb| {
anyhow::Error::msg(format!(
"non-Unicode path: {}",
pb.to_string_lossy()
))
})?;
if file_type.is_symlink() {
debug!("{entry_path:?} is a symlink, skipping")
} else if file_type.is_dir() {
if recursive {
paths.extend(get_all_files(&entry_path, true).await?.into_iter())
} else {
paths.push(entry_path)
}
} else {
paths.push(entry_path);
}
}
Ok(paths)
} else {
bail!("Path {directory_path:?} is not a directory")
}
} else {
Ok(Vec::new())
}
})
}
async fn create_target_directory(target_file_path: &Utf8Path) -> anyhow::Result<()> {
let target_dir = match target_file_path.parent() {
Some(parent_dir) => parent_dir,
@@ -930,18 +923,13 @@ mod fs_tests {
// No delimiter: should recursively list everything
let (storage, cancel) = create_storage()?;
let child = upload_dummy_file(&storage, "grandparent/parent/child", None, &cancel).await?;
let child_sibling =
upload_dummy_file(&storage, "grandparent/parent/child_sibling", None, &cancel).await?;
let uncle = upload_dummy_file(&storage, "grandparent/uncle", None, &cancel).await?;
let listing = storage
.list(None, ListingMode::NoDelimiter, None, &cancel)
.await?;
assert!(listing.prefixes.is_empty());
assert_eq!(
listing.keys.into_iter().collect::<HashSet<_>>(),
HashSet::from([uncle.clone(), child.clone(), child_sibling.clone()])
);
assert_eq!(listing.keys, [uncle.clone(), child.clone()].to_vec());
// Delimiter: should only go one deep
let listing = storage
@@ -954,25 +942,7 @@ mod fs_tests {
);
assert!(listing.keys.is_empty());
// Delimiter & prefix with a trailing slash
let listing = storage
.list(
Some(&RemotePath::from_string("timelines/some_timeline/grandparent/").unwrap()),
ListingMode::WithDelimiter,
None,
&cancel,
)
.await?;
assert_eq!(
listing.keys,
[RemotePath::from_string("uncle").unwrap()].to_vec()
);
assert_eq!(
listing.prefixes,
[RemotePath::from_string("parent").unwrap()].to_vec()
);
// Delimiter and prefix without a trailing slash
// Delimiter & prefix
let listing = storage
.list(
Some(&RemotePath::from_string("timelines/some_timeline/grandparent").unwrap()),
@@ -981,66 +951,12 @@ mod fs_tests {
&cancel,
)
.await?;
assert_eq!(listing.keys, [].to_vec());
assert_eq!(
listing.prefixes,
[RemotePath::from_string("grandparent").unwrap()].to_vec()
);
// Delimiter and prefix that's partway through a path component
let listing = storage
.list(
Some(&RemotePath::from_string("timelines/some_timeline/grandp").unwrap()),
ListingMode::WithDelimiter,
None,
&cancel,
)
.await?;
assert_eq!(listing.keys, [].to_vec());
assert_eq!(
listing.prefixes,
[RemotePath::from_string("grandparent").unwrap()].to_vec()
);
Ok(())
}
#[tokio::test]
async fn list_part_component() -> anyhow::Result<()> {
// No delimiter: should recursively list everything
let (storage, cancel) = create_storage()?;
// Imitates what happens in a tenant path when we have an unsharded path and a sharded path, and do a listing
// of the unsharded path: although there is a "directory" at the unsharded path, it should be handled as
// a freeform prefix.
let _child_a =
upload_dummy_file(&storage, "grandparent/tenant-01/child", None, &cancel).await?;
let _child_b =
upload_dummy_file(&storage, "grandparent/tenant/child", None, &cancel).await?;
// Delimiter and prefix that's partway through a path component
let listing = storage
.list(
Some(
&RemotePath::from_string("timelines/some_timeline/grandparent/tenant").unwrap(),
),
ListingMode::WithDelimiter,
None,
&cancel,
)
.await?;
assert_eq!(listing.keys, [].to_vec());
let mut found_prefixes = listing.prefixes.clone();
found_prefixes.sort();
assert_eq!(
found_prefixes,
[
RemotePath::from_string("tenant").unwrap(),
RemotePath::from_string("tenant-01").unwrap(),
]
.to_vec()
[RemotePath::from_string("timelines/some_timeline/grandparent/parent").unwrap()]
.to_vec()
);
assert_eq!(listing.keys, [uncle.clone()].to_vec());
Ok(())
}

View File

@@ -30,7 +30,7 @@ use aws_sdk_s3::{
config::{AsyncSleep, Builder, IdentityCache, Region, SharedAsyncSleep},
error::SdkError,
operation::get_object::GetObjectError,
types::{Delete, DeleteMarkerEntry, ObjectIdentifier, ObjectVersion, StorageClass},
types::{Delete, DeleteMarkerEntry, ObjectIdentifier, ObjectVersion},
Client,
};
use aws_smithy_async::rt::sleep::TokioSleep;
@@ -62,7 +62,6 @@ pub struct S3Bucket {
bucket_name: String,
prefix_in_bucket: Option<String>,
max_keys_per_list_response: Option<i32>,
upload_storage_class: Option<StorageClass>,
concurrency_limiter: ConcurrencyLimiter,
// Per-request timeout. Accessible for tests.
pub timeout: Duration,
@@ -155,7 +154,6 @@ impl S3Bucket {
max_keys_per_list_response: aws_config.max_keys_per_list_response,
prefix_in_bucket,
concurrency_limiter: ConcurrencyLimiter::new(aws_config.concurrency_limit.get()),
upload_storage_class: aws_config.upload_storage_class.clone(),
timeout,
})
}
@@ -180,7 +178,10 @@ impl S3Bucket {
pub fn relative_path_to_s3_object(&self, path: &RemotePath) -> String {
assert_eq!(std::path::MAIN_SEPARATOR, REMOTE_STORAGE_PREFIX_SEPARATOR);
let path_string = path.get_path().as_str();
let path_string = path
.get_path()
.as_str()
.trim_end_matches(REMOTE_STORAGE_PREFIX_SEPARATOR);
match &self.prefix_in_bucket {
Some(prefix) => prefix.clone() + "/" + path_string,
None => path_string.to_string(),
@@ -470,11 +471,16 @@ impl RemoteStorage for S3Bucket {
// get the passed prefix or if it is not set use prefix_in_bucket value
let list_prefix = prefix
.map(|p| self.relative_path_to_s3_object(p))
.or_else(|| {
self.prefix_in_bucket.clone().map(|mut s| {
s.push(REMOTE_STORAGE_PREFIX_SEPARATOR);
s
})
.or_else(|| self.prefix_in_bucket.clone())
.map(|mut p| {
// required to end with a separator
// otherwise request will return only the entry of a prefix
if matches!(mode, ListingMode::WithDelimiter)
&& !p.ends_with(REMOTE_STORAGE_PREFIX_SEPARATOR)
{
p.push(REMOTE_STORAGE_PREFIX_SEPARATOR);
}
p
});
let _permit = self.permit(kind, cancel).await?;
@@ -543,15 +549,11 @@ impl RemoteStorage for S3Bucket {
}
}
// S3 gives us prefixes like "foo/", we return them like "foo"
result.prefixes.extend(prefixes.iter().filter_map(|o| {
Some(
self.s3_object_to_relative_path(
o.prefix()?
.trim_end_matches(REMOTE_STORAGE_PREFIX_SEPARATOR),
),
)
}));
result.prefixes.extend(
prefixes
.iter()
.filter_map(|o| Some(self.s3_object_to_relative_path(o.prefix()?))),
);
continuation_token = match response.next_continuation_token {
Some(new_token) => Some(new_token),
@@ -584,7 +586,6 @@ impl RemoteStorage for S3Bucket {
.bucket(self.bucket_name.clone())
.key(self.relative_path_to_s3_object(to))
.set_metadata(metadata.map(|m| m.0))
.set_storage_class(self.upload_storage_class.clone())
.content_length(from_size_bytes.try_into()?)
.body(bytes_stream)
.send();
@@ -636,7 +637,6 @@ impl RemoteStorage for S3Bucket {
.copy_object()
.bucket(self.bucket_name.clone())
.key(self.relative_path_to_s3_object(to))
.set_storage_class(self.upload_storage_class.clone())
.copy_source(copy_source)
.send();
@@ -894,7 +894,6 @@ impl RemoteStorage for S3Bucket {
.copy_object()
.bucket(self.bucket_name.clone())
.key(key)
.set_storage_class(self.upload_storage_class.clone())
.copy_source(&source_id)
.send();
@@ -1051,22 +1050,22 @@ mod tests {
Some("/test/prefix/"),
];
let expected_outputs = [
vec!["", "some/path", "some/path/"],
vec!["/", "/some/path", "/some/path/"],
vec!["", "some/path", "some/path"],
vec!["/", "/some/path", "/some/path"],
vec![
"test/prefix/",
"test/prefix/some/path",
"test/prefix/some/path/",
"test/prefix/some/path",
],
vec![
"test/prefix/",
"test/prefix/some/path",
"test/prefix/some/path/",
"test/prefix/some/path",
],
vec![
"test/prefix/",
"test/prefix/some/path",
"test/prefix/some/path/",
"test/prefix/some/path",
],
];
@@ -1078,7 +1077,6 @@ mod tests {
endpoint: None,
concurrency_limit: NonZeroUsize::new(100).unwrap(),
max_keys_per_list_response: Some(5),
upload_storage_class: None,
};
let storage =
S3Bucket::new(&config, std::time::Duration::ZERO).expect("remote storage init");

View File

@@ -107,6 +107,27 @@ impl UnreliableWrapper {
type VoidStorage = crate::LocalFs;
impl RemoteStorage for UnreliableWrapper {
async fn list_prefixes(
&self,
prefix: Option<&RemotePath>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
self.attempt(RemoteOp::ListPrefixes(prefix.cloned()))
.map_err(DownloadError::Other)?;
self.inner.list_prefixes(prefix, cancel).await
}
async fn list_files(
&self,
folder: Option<&RemotePath>,
max_keys: Option<NonZeroU32>,
cancel: &CancellationToken,
) -> Result<Vec<RemotePath>, DownloadError> {
self.attempt(RemoteOp::ListPrefixes(folder.cloned()))
.map_err(DownloadError::Other)?;
self.inner.list_files(folder, max_keys, cancel).await
}
async fn list(
&self,
prefix: Option<&RemotePath>,

View File

@@ -1,6 +1,5 @@
use anyhow::Context;
use camino::Utf8Path;
use remote_storage::ListingMode;
use remote_storage::RemotePath;
use std::sync::Arc;
use std::{collections::HashSet, num::NonZeroU32};
@@ -55,9 +54,9 @@ async fn pagination_should_work(ctx: &mut MaybeEnabledStorageWithTestBlobs) -> a
let base_prefix = RemotePath::new(Utf8Path::new(ctx.enabled.base_prefix))
.context("common_prefix construction")?;
let root_remote_prefixes = test_client
.list(None, ListingMode::WithDelimiter, None, &cancel)
.await?
.prefixes
.list_prefixes(None, &cancel)
.await
.context("client list root prefixes failure")?
.into_iter()
.collect::<HashSet<_>>();
assert_eq!(
@@ -66,14 +65,9 @@ async fn pagination_should_work(ctx: &mut MaybeEnabledStorageWithTestBlobs) -> a
);
let nested_remote_prefixes = test_client
.list(
Some(&base_prefix.add_trailing_slash()),
ListingMode::WithDelimiter,
None,
&cancel,
)
.await?
.prefixes
.list_prefixes(Some(&base_prefix), &cancel)
.await
.context("client list nested prefixes failure")?
.into_iter()
.collect::<HashSet<_>>();
let remote_only_prefixes = nested_remote_prefixes
@@ -96,13 +90,11 @@ async fn pagination_should_work(ctx: &mut MaybeEnabledStorageWithTestBlobs) -> a
///
/// First, create a set of S3 objects with keys `random_prefix/folder{j}/blob_{i}.txt` in [`upload_remote_data`]
/// Then performs the following queries:
/// 1. `list(None)`. This should return all files `random_prefix/folder{j}/blob_{i}.txt`
/// 2. `list("folder1")`. This should return all files `random_prefix/folder1/blob_{i}.txt`
/// 1. `list_files(None)`. This should return all files `random_prefix/folder{j}/blob_{i}.txt`
/// 2. `list_files("folder1")`. This should return all files `random_prefix/folder1/blob_{i}.txt`
#[test_context(MaybeEnabledStorageWithSimpleTestBlobs)]
#[tokio::test]
async fn list_no_delimiter_works(
ctx: &mut MaybeEnabledStorageWithSimpleTestBlobs,
) -> anyhow::Result<()> {
async fn list_files_works(ctx: &mut MaybeEnabledStorageWithSimpleTestBlobs) -> anyhow::Result<()> {
let ctx = match ctx {
MaybeEnabledStorageWithSimpleTestBlobs::Enabled(ctx) => ctx,
MaybeEnabledStorageWithSimpleTestBlobs::Disabled => return Ok(()),
@@ -115,36 +107,29 @@ async fn list_no_delimiter_works(
let base_prefix =
RemotePath::new(Utf8Path::new("folder1")).context("common_prefix construction")?;
let root_files = test_client
.list(None, ListingMode::NoDelimiter, None, &cancel)
.list_files(None, None, &cancel)
.await
.context("client list root files failure")?
.keys
.into_iter()
.collect::<HashSet<_>>();
assert_eq!(
root_files,
ctx.remote_blobs.clone(),
"remote storage list on root mismatches with the uploads."
"remote storage list_files on root mismatches with the uploads."
);
// Test that max_keys limit works. In total there are about 21 files (see
// upload_simple_remote_data call in test_real_s3.rs).
let limited_root_files = test_client
.list(
None,
ListingMode::NoDelimiter,
Some(NonZeroU32::new(2).unwrap()),
&cancel,
)
.list_files(None, Some(NonZeroU32::new(2).unwrap()), &cancel)
.await
.context("client list root files failure")?;
assert_eq!(limited_root_files.keys.len(), 2);
assert_eq!(limited_root_files.len(), 2);
let nested_remote_files = test_client
.list(Some(&base_prefix), ListingMode::NoDelimiter, None, &cancel)
.list_files(Some(&base_prefix), None, &cancel)
.await
.context("client list nested files failure")?
.keys
.into_iter()
.collect::<HashSet<_>>();
let trim_remote_blobs: HashSet<_> = ctx
@@ -156,7 +141,7 @@ async fn list_no_delimiter_works(
.collect();
assert_eq!(
nested_remote_files, trim_remote_blobs,
"remote storage list on subdirrectory mismatches with the uploads."
"remote storage list_files on subdirrectory mismatches with the uploads."
);
Ok(())
}
@@ -214,11 +199,7 @@ async fn delete_objects_works(ctx: &mut MaybeEnabledStorage) -> anyhow::Result<(
ctx.client.delete_objects(&[path1, path2], &cancel).await?;
let prefixes = ctx
.client
.list(None, ListingMode::WithDelimiter, None, &cancel)
.await?
.prefixes;
let prefixes = ctx.client.list_prefixes(None, &cancel).await?;
assert_eq!(prefixes.len(), 1);

View File

@@ -132,6 +132,10 @@ impl AsyncTestContext for MaybeEnabledStorageWithTestBlobs {
}
}
// NOTE: the setups for the list_prefixes test and the list_files test are very similar
// However, they are not idential. The list_prefixes function is concerned with listing prefixes,
// whereas the list_files function is concerned with listing files.
// See `RemoteStorage::list_files` documentation for more details
enum MaybeEnabledStorageWithSimpleTestBlobs {
Enabled(AzureWithSimpleTestBlobs),
Disabled,

View File

@@ -12,8 +12,8 @@ use anyhow::Context;
use camino::Utf8Path;
use futures_util::StreamExt;
use remote_storage::{
DownloadError, GenericRemoteStorage, ListingMode, RemotePath, RemoteStorageConfig,
RemoteStorageKind, S3Config,
DownloadError, GenericRemoteStorage, RemotePath, RemoteStorageConfig, RemoteStorageKind,
S3Config,
};
use test_context::test_context;
use test_context::AsyncTestContext;
@@ -75,14 +75,11 @@ async fn s3_time_travel_recovery_works(ctx: &mut MaybeEnabledStorage) -> anyhow:
client: &Arc<GenericRemoteStorage>,
cancel: &CancellationToken,
) -> anyhow::Result<HashSet<RemotePath>> {
Ok(
retry(|| client.list(None, ListingMode::NoDelimiter, None, cancel))
.await
.context("list root files failure")?
.keys
.into_iter()
.collect::<HashSet<_>>(),
)
Ok(retry(|| client.list_files(None, None, cancel))
.await
.context("list root files failure")?
.into_iter()
.collect::<HashSet<_>>())
}
let cancel = CancellationToken::new();
@@ -297,6 +294,10 @@ impl AsyncTestContext for MaybeEnabledStorageWithTestBlobs {
}
}
// NOTE: the setups for the list_prefixes test and the list_files test are very similar
// However, they are not idential. The list_prefixes function is concerned with listing prefixes,
// whereas the list_files function is concerned with listing files.
// See `RemoteStorage::list_files` documentation for more details
enum MaybeEnabledStorageWithSimpleTestBlobs {
Enabled(S3WithSimpleTestBlobs),
Disabled,
@@ -380,7 +381,6 @@ fn create_s3_client(
endpoint: None,
concurrency_limit: NonZeroUsize::new(100).unwrap(),
max_keys_per_list_response,
upload_storage_class: None,
}),
timeout: RemoteStorageConfig::DEFAULT_TIMEOUT,
};

View File

@@ -34,8 +34,6 @@ pub enum Generation {
/// scenarios where pageservers might otherwise issue conflicting writes to
/// remote storage
impl Generation {
pub const MAX: Self = Self::Valid(u32::MAX);
/// Create a new Generation that represents a legacy key format with
/// no generation suffix
pub fn none() -> Self {

View File

@@ -92,8 +92,6 @@ pub mod zstd;
pub mod env;
pub mod poison;
/// This is a shortcut to embed git sha into binaries and avoid copying the same build script to all packages
///
/// we have several cases:

View File

@@ -1,121 +0,0 @@
//! Protect a piece of state from reuse after it is left in an inconsistent state.
//!
//! # Example
//!
//! ```
//! # tokio_test::block_on(async {
//! use utils::poison::Poison;
//! use std::time::Duration;
//!
//! struct State {
//! clean: bool,
//! }
//! let state = tokio::sync::Mutex::new(Poison::new("mystate", State { clean: true }));
//!
//! let mut mutex_guard = state.lock().await;
//! let mut poison_guard = mutex_guard.check_and_arm()?;
//! let state = poison_guard.data_mut();
//! state.clean = false;
//! // If we get cancelled at this await point, subsequent check_and_arm() calls will fail.
//! tokio::time::sleep(Duration::from_secs(10)).await;
//! state.clean = true;
//! poison_guard.disarm();
//! # Ok::<(), utils::poison::Error>(())
//! # });
//! ```
use tracing::warn;
pub struct Poison<T> {
what: &'static str,
state: State,
data: T,
}
#[derive(Clone, Copy)]
enum State {
Clean,
Armed,
Poisoned { at: chrono::DateTime<chrono::Utc> },
}
impl<T> Poison<T> {
/// We log `what` `warning!` level if the [`Guard`] gets dropped without being [`Guard::disarm`]ed.
pub fn new(what: &'static str, data: T) -> Self {
Self {
what,
state: State::Clean,
data,
}
}
/// Check for poisoning and return a [`Guard`] that provides access to the wrapped state.
pub fn check_and_arm(&mut self) -> Result<Guard<T>, Error> {
match self.state {
State::Clean => {
self.state = State::Armed;
Ok(Guard(self))
}
State::Armed => unreachable!("transient state"),
State::Poisoned { at } => Err(Error::Poisoned {
what: self.what,
at,
}),
}
}
}
/// Use [`Self::data`] and [`Self::data_mut`] to access the wrapped state.
/// Once modifications are done, use [`Self::disarm`].
/// If [`Guard`] gets dropped instead of calling [`Self::disarm`], the state is poisoned
/// and subsequent calls to [`Poison::check_and_arm`] will fail with an error.
pub struct Guard<'a, T>(&'a mut Poison<T>);
impl<'a, T> Guard<'a, T> {
pub fn data(&self) -> &T {
&self.0.data
}
pub fn data_mut(&mut self) -> &mut T {
&mut self.0.data
}
pub fn disarm(self) {
match self.0.state {
State::Clean => unreachable!("we set it to Armed in check_and_arm()"),
State::Armed => {
self.0.state = State::Clean;
}
State::Poisoned { at } => {
unreachable!("we fail check_and_arm() if it's in that state: {at}")
}
}
}
}
impl<'a, T> Drop for Guard<'a, T> {
fn drop(&mut self) {
match self.0.state {
State::Clean => {
// set by disarm()
}
State::Armed => {
// still armed => poison it
let at = chrono::Utc::now();
self.0.state = State::Poisoned { at };
warn!(at=?at, "poisoning {}", self.0.what);
}
State::Poisoned { at } => {
unreachable!("we fail check_and_arm() if it's in that state: {at}")
}
}
}
}
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("poisoned at {at}: {what}")]
Poisoned {
what: &'static str,
at: chrono::DateTime<chrono::Utc>,
},
}

View File

@@ -192,14 +192,6 @@ impl<T> OnceCell<T> {
}
}
/// Like [`Guard::take_and_deinit`], but will return `None` if this OnceCell was never
/// initialized.
pub fn take_and_deinit(&mut self) -> Option<(T, InitPermit)> {
let inner = self.inner.get_mut().unwrap();
inner.take_and_deinit()
}
/// Return the number of [`Self::get_or_init`] calls waiting for initialization to complete.
pub fn initializer_count(&self) -> usize {
self.initializers.load(Ordering::Relaxed)
@@ -254,23 +246,15 @@ impl<'a, T> Guard<'a, T> {
/// The permit will be on a semaphore part of the new internal value, and any following
/// [`OnceCell::get_or_init`] will wait on it to complete.
pub fn take_and_deinit(mut self) -> (T, InitPermit) {
self.0
.take_and_deinit()
.expect("guard is not created unless value has been initialized")
}
}
impl<T> Inner<T> {
pub fn take_and_deinit(&mut self) -> Option<(T, InitPermit)> {
let value = self.value.take()?;
let mut swapped = Inner::default();
let sem = swapped.init_semaphore.clone();
// acquire and forget right away, moving the control over to InitPermit
sem.try_acquire().expect("we just created this").forget();
let permit = InitPermit(sem);
std::mem::swap(self, &mut swapped);
Some((value, permit))
std::mem::swap(&mut *self.0, &mut swapped);
swapped
.value
.map(|v| (v, InitPermit(sem)))
.expect("guard is not created unless value has been initialized")
}
}
@@ -279,13 +263,6 @@ impl<T> Inner<T> {
/// On drop, this type will return the permit.
pub struct InitPermit(Arc<tokio::sync::Semaphore>);
impl std::fmt::Debug for InitPermit {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let ptr = Arc::as_ptr(&self.0) as *const ();
f.debug_tuple("InitPermit").field(&ptr).finish()
}
}
impl Drop for InitPermit {
fn drop(&mut self) {
assert_eq!(
@@ -582,22 +559,4 @@ mod tests {
assert_eq!(*target.get().unwrap(), 11);
}
#[tokio::test]
async fn take_and_deinit_on_mut() {
use std::convert::Infallible;
let mut target = OnceCell::<u32>::default();
assert!(target.take_and_deinit().is_none());
target
.get_or_init(|permit| async move { Ok::<_, Infallible>((42, permit)) })
.await
.unwrap();
let again = target.take_and_deinit();
assert!(matches!(again, Some((42, _))), "{again:?}");
assert!(target.take_and_deinit().is_none());
}
}

View File

@@ -70,7 +70,6 @@ tokio-stream.workspace = true
tokio-util.workspace = true
toml_edit = { workspace = true, features = [ "serde" ] }
tracing.workspace = true
twox-hash.workspace = true
url.workspace = true
walkdir.workspace = true
metrics.workspace = true

View File

@@ -27,50 +27,30 @@
//!
//! # Reference Numbers
//!
//! 2024-04-15 on i3en.3xlarge
//! 2024-04-04 on i3en.3xlarge
//!
//! ```text
//! async-short/1 time: [24.584 µs 24.737 µs 24.922 µs]
//! async-short/2 time: [33.479 µs 33.660 µs 33.888 µs]
//! async-short/4 time: [42.713 µs 43.046 µs 43.440 µs]
//! async-short/8 time: [71.814 µs 72.478 µs 73.240 µs]
//! async-short/16 time: [132.73 µs 134.45 µs 136.22 µs]
//! async-short/32 time: [258.31 µs 260.73 µs 263.27 µs]
//! async-short/64 time: [511.61 µs 514.44 µs 517.51 µs]
//! async-short/128 time: [992.64 µs 998.23 µs 1.0042 ms]
//! async-medium/1 time: [110.11 µs 110.50 µs 110.96 µs]
//! async-medium/2 time: [153.06 µs 153.85 µs 154.99 µs]
//! async-medium/4 time: [317.51 µs 319.92 µs 322.85 µs]
//! async-medium/8 time: [638.30 µs 644.68 µs 652.12 µs]
//! async-medium/16 time: [1.2651 ms 1.2773 ms 1.2914 ms]
//! async-medium/32 time: [2.5117 ms 2.5410 ms 2.5720 ms]
//! async-medium/64 time: [4.8088 ms 4.8555 ms 4.9047 ms]
//! async-medium/128 time: [8.8311 ms 8.9849 ms 9.1263 ms]
//! sync-short/1 time: [25.503 µs 25.626 µs 25.771 µs]
//! sync-short/2 time: [30.850 µs 31.013 µs 31.208 µs]
//! sync-short/4 time: [45.543 µs 45.856 µs 46.193 µs]
//! sync-short/8 time: [84.114 µs 84.639 µs 85.220 µs]
//! sync-short/16 time: [185.22 µs 186.15 µs 187.13 µs]
//! sync-short/32 time: [377.43 µs 378.87 µs 380.46 µs]
//! sync-short/64 time: [756.49 µs 759.04 µs 761.70 µs]
//! sync-short/128 time: [1.4825 ms 1.4874 ms 1.4923 ms]
//! sync-medium/1 time: [105.66 µs 106.01 µs 106.43 µs]
//! sync-medium/2 time: [153.10 µs 153.84 µs 154.72 µs]
//! sync-medium/4 time: [327.13 µs 329.44 µs 332.27 µs]
//! sync-medium/8 time: [654.26 µs 658.73 µs 663.63 µs]
//! sync-medium/16 time: [1.2682 ms 1.2748 ms 1.2816 ms]
//! sync-medium/32 time: [2.4456 ms 2.4595 ms 2.4731 ms]
//! sync-medium/64 time: [4.6523 ms 4.6890 ms 4.7256 ms]
//! sync-medium/128 time: [8.7215 ms 8.8323 ms 8.9344 ms]
//! short/1 time: [25.925 µs 26.060 µs 26.209 µs]
//! short/2 time: [31.277 µs 31.483 µs 31.722 µs]
//! short/4 time: [45.496 µs 45.831 µs 46.182 µs]
//! short/8 time: [84.298 µs 84.920 µs 85.566 µs]
//! short/16 time: [185.04 µs 186.41 µs 187.88 µs]
//! short/32 time: [385.01 µs 386.77 µs 388.70 µs]
//! short/64 time: [770.24 µs 773.04 µs 776.04 µs]
//! short/128 time: [1.5017 ms 1.5064 ms 1.5113 ms]
//! medium/1 time: [106.65 µs 107.20 µs 107.85 µs]
//! medium/2 time: [153.28 µs 154.24 µs 155.56 µs]
//! medium/4 time: [325.67 µs 327.01 µs 328.71 µs]
//! medium/8 time: [646.82 µs 650.17 µs 653.91 µs]
//! medium/16 time: [1.2645 ms 1.2701 ms 1.2762 ms]
//! medium/32 time: [2.4409 ms 2.4550 ms 2.4692 ms]
//! medium/64 time: [4.6814 ms 4.7114 ms 4.7408 ms]
//! medium/128 time: [8.7790 ms 8.9037 ms 9.0282 ms]
//! ```
use bytes::{Buf, Bytes};
use criterion::{BenchmarkId, Criterion};
use pageserver::{
config::PageServerConf,
walrecord::NeonWalRecord,
walredo::{PostgresRedoManager, ProcessKind},
};
use pageserver::{config::PageServerConf, walrecord::NeonWalRecord, walredo::PostgresRedoManager};
use pageserver_api::{key::Key, shard::TenantShardId};
use std::{
sync::Arc,
@@ -80,39 +60,33 @@ use tokio::{sync::Barrier, task::JoinSet};
use utils::{id::TenantId, lsn::Lsn};
fn bench(c: &mut Criterion) {
for process_kind in &[ProcessKind::Async, ProcessKind::Sync] {
{
let nclients = [1, 2, 4, 8, 16, 32, 64, 128];
for nclients in nclients {
let mut group = c.benchmark_group(format!("{process_kind}-short"));
group.bench_with_input(
BenchmarkId::from_parameter(nclients),
&nclients,
|b, nclients| {
let redo_work = Arc::new(Request::short_input());
b.iter_custom(|iters| {
bench_impl(*process_kind, Arc::clone(&redo_work), iters, *nclients)
});
},
);
}
{
let nclients = [1, 2, 4, 8, 16, 32, 64, 128];
for nclients in nclients {
let mut group = c.benchmark_group("short");
group.bench_with_input(
BenchmarkId::from_parameter(nclients),
&nclients,
|b, nclients| {
let redo_work = Arc::new(Request::short_input());
b.iter_custom(|iters| bench_impl(Arc::clone(&redo_work), iters, *nclients));
},
);
}
}
{
let nclients = [1, 2, 4, 8, 16, 32, 64, 128];
for nclients in nclients {
let mut group = c.benchmark_group(format!("{process_kind}-medium"));
group.bench_with_input(
BenchmarkId::from_parameter(nclients),
&nclients,
|b, nclients| {
let redo_work = Arc::new(Request::medium_input());
b.iter_custom(|iters| {
bench_impl(*process_kind, Arc::clone(&redo_work), iters, *nclients)
});
},
);
}
{
let nclients = [1, 2, 4, 8, 16, 32, 64, 128];
for nclients in nclients {
let mut group = c.benchmark_group("medium");
group.bench_with_input(
BenchmarkId::from_parameter(nclients),
&nclients,
|b, nclients| {
let redo_work = Arc::new(Request::medium_input());
b.iter_custom(|iters| bench_impl(Arc::clone(&redo_work), iters, *nclients));
},
);
}
}
}
@@ -120,16 +94,10 @@ criterion::criterion_group!(benches, bench);
criterion::criterion_main!(benches);
// Returns the sum of each client's wall-clock time spent executing their share of the n_redos.
fn bench_impl(
process_kind: ProcessKind,
redo_work: Arc<Request>,
n_redos: u64,
nclients: u64,
) -> Duration {
fn bench_impl(redo_work: Arc<Request>, n_redos: u64, nclients: u64) -> Duration {
let repo_dir = camino_tempfile::tempdir_in(env!("CARGO_TARGET_TMPDIR")).unwrap();
let mut conf = PageServerConf::dummy_conf(repo_dir.path().to_path_buf());
conf.walredo_process_kind = process_kind;
let conf = PageServerConf::dummy_conf(repo_dir.path().to_path_buf());
let conf = Box::leak(Box::new(conf));
let tenant_shard_id = TenantShardId::unsharded(TenantId::generate());
@@ -145,40 +113,25 @@ fn bench_impl(
let manager = PostgresRedoManager::new(conf, tenant_shard_id);
let manager = Arc::new(manager);
// divide the amount of work equally among the clients.
let nredos_per_client = n_redos / nclients;
for _ in 0..nclients {
rt.block_on(async {
tasks.spawn(client(
Arc::clone(&manager),
Arc::clone(&start),
Arc::clone(&redo_work),
nredos_per_client,
// divide the amount of work equally among the clients
n_redos / nclients,
))
});
}
let elapsed = rt.block_on(async move {
let mut total_wallclock_time = Duration::ZERO;
rt.block_on(async move {
let mut total_wallclock_time = std::time::Duration::from_millis(0);
while let Some(res) = tasks.join_next().await {
total_wallclock_time += res.unwrap();
}
total_wallclock_time
});
// consistency check to ensure process kind setting worked
if nredos_per_client > 0 {
assert_eq!(
manager
.status()
.process
.map(|p| p.kind)
.expect("the benchmark work causes a walredo process to be spawned"),
std::borrow::Cow::Borrowed(process_kind.into())
);
}
elapsed
})
}
async fn client(

View File

@@ -243,19 +243,6 @@ impl Client {
Ok(())
}
pub async fn tenant_scan_remote_storage(
&self,
tenant_id: TenantId,
) -> Result<TenantScanRemoteStorageResponse> {
let uri = format!(
"{}/v1/tenant/{tenant_id}/scan_remote_storage",
self.mgmt_api_endpoint
);
let response = self.request(Method::GET, &uri, ()).await?;
let body = response.json().await.map_err(Error::ReceiveBody)?;
Ok(body)
}
pub async fn tenant_config(&self, req: &TenantConfigRequest) -> Result<()> {
let uri = format!("{}/v1/tenant/config", self.mgmt_api_endpoint);
self.request(Method::PUT, &uri, req).await?;
@@ -292,7 +279,7 @@ impl Client {
lazy: bool,
) -> Result<()> {
let req_body = TenantLocationConfigRequest {
tenant_id: None,
tenant_id: Some(tenant_shard_id),
config,
};

View File

@@ -60,7 +60,7 @@ impl Client {
) -> anyhow::Result<PagestreamClient> {
let copy_both: tokio_postgres::CopyBothDuplex<bytes::Bytes> = self
.client
.copy_both_simple(&format!("pagestream_v2 {tenant_id} {timeline_id}"))
.copy_both_simple(&format!("pagestream {tenant_id} {timeline_id}"))
.await?;
let Client {
cancel_on_client_drop,

View File

@@ -9,45 +9,18 @@
//! Coordinates in both axis are compressed for better readability.
//! (see <https://medium.com/algorithms-digest/coordinate-compression-2fff95326fb>)
//!
//! The plain text API was chosen so that we can easily work with filenames from various
//! sources; see the Usage section below for examples.
//!
//! # Usage
//!
//! ## Producing the SVG
//!
//! Example use:
//! ```bash
//!
//! # local timeline dir
//! ls test_output/test_pgbench\[neon-45-684\]/repo/tenants/$TENANT/timelines/$TIMELINE | \
//! grep "__" | cargo run --release --bin pagectl draw-timeline-dir > out.svg
//!
//! # Layer map dump from `/v1/tenant/$TENANT/timeline/$TIMELINE/layer`
//! (jq -r '.historic_layers[] | .layer_file_name' | cargo run -p pagectl draw-timeline) < layer-map.json > out.svg
//!
//! # From an `index_part.json` in S3
//! (jq -r '.layer_metadata | keys[]' | cargo run -p pagectl draw-timeline ) < index_part.json-00000016 > out.svg
//!
//! $ ls test_output/test_pgbench\[neon-45-684\]/repo/tenants/$TENANT/timelines/$TIMELINE | \
//! $ grep "__" | cargo run --release --bin pagectl draw-timeline-dir > out.svg
//! $ firefox out.svg
//! ```
//!
//! ## Viewing
//! This API was chosen so that we can easily work with filenames extracted from ssh,
//! or from pageserver log files.
//!
//! **Inkscape** is better than the built-in viewers in browsers.
//!
//! After selecting a layer file rectangle, use "Open XML Editor" (Ctrl|Cmd + Shift + X)
//! to see the layer file name in the comment field.
//!
//! ```bash
//!
//! # Linux
//! inkscape out.svg
//!
//! # macOS
//! /Applications/Inkscape.app/Contents/MacOS/inkscape out.svg
//!
//! ```
//!
//! TODO Consider shipping this as a grafana panel plugin:
//! <https://grafana.com/tutorials/build-a-panel-plugin/>
use anyhow::Result;
use pageserver::repository::Key;
use pageserver::METADATA_FILE_NAME;
@@ -92,12 +65,7 @@ fn parse_filename(name: &str) -> (Range<Key>, Range<Lsn>) {
pub fn main() -> Result<()> {
// Parse layer filenames from stdin
struct Layer {
filename: String,
key_range: Range<Key>,
lsn_range: Range<Lsn>,
}
let mut files: Vec<Layer> = vec![];
let mut ranges: Vec<(Range<Key>, Range<Lsn>)> = vec![];
let stdin = io::stdin();
for line in stdin.lock().lines() {
let line = line.unwrap();
@@ -108,23 +76,14 @@ pub fn main() -> Result<()> {
// Don't try and parse "metadata" like a key-lsn range
continue;
}
let (key_range, lsn_range) = parse_filename(filename);
files.push(Layer {
filename: filename.to_owned(),
key_range,
lsn_range,
});
let range = parse_filename(filename);
ranges.push(range);
}
// Collect all coordinates
let mut keys: Vec<Key> = vec![];
let mut lsns: Vec<Lsn> = vec![];
for Layer {
key_range: keyr,
lsn_range: lsnr,
..
} in &files
{
for (keyr, lsnr) in &ranges {
keys.push(keyr.start);
keys.push(keyr.end);
lsns.push(lsnr.start);
@@ -148,12 +107,7 @@ pub fn main() -> Result<()> {
h: stretch * lsn_map.len() as f32
}
);
for Layer {
filename,
key_range: keyr,
lsn_range: lsnr,
} in &files
{
for (keyr, lsnr) in &ranges {
let key_start = *key_map.get(&keyr.start).unwrap();
let key_end = *key_map.get(&keyr.end).unwrap();
let key_diff = key_end - key_start;
@@ -197,7 +151,6 @@ pub fn main() -> Result<()> {
.fill(fill)
.stroke(Stroke::Color(rgb(0, 0, 0), 0.1))
.border_radius(0.4)
.comment(filename)
);
}
println!("{}", EndSvg);

View File

@@ -312,12 +312,8 @@ async fn main_impl(
let (rel_tag, block_no) =
key_to_rel_block(key).expect("we filter non-rel-block keys out above");
PagestreamGetPageRequest {
request_lsn: if rng.gen_bool(args.req_latest_probability) {
Lsn::MAX
} else {
r.timeline_lsn
},
not_modified_since: r.timeline_lsn,
latest: rng.gen_bool(args.req_latest_probability),
lsn: r.timeline_lsn,
rel: rel_tag,
blkno: block_no,
}

View File

@@ -1,112 +0,0 @@
use pageserver_api::key::{Key, AUX_KEY_PREFIX, METADATA_KEY_SIZE};
use tracing::warn;
/// Create a metadata key from a hash, encoded as [AUX_KEY_PREFIX, 2B directory prefix, first 13B of 128b xxhash].
fn aux_hash_to_metadata_key(dir_level1: u8, dir_level2: u8, data: &[u8]) -> Key {
let mut key = [0; METADATA_KEY_SIZE];
let hash = twox_hash::xxh3::hash128(data).to_be_bytes();
key[0] = AUX_KEY_PREFIX;
key[1] = dir_level1;
key[2] = dir_level2;
key[3..16].copy_from_slice(&hash[0..13]);
Key::from_metadata_key_fixed_size(&key)
}
const AUX_DIR_PG_LOGICAL: u8 = 0x01;
const AUX_DIR_PG_REPLSLOT: u8 = 0x02;
const AUX_DIR_PG_UNKNOWN: u8 = 0xFF;
/// Encode the aux file into a fixed-size key.
///
/// The first byte is the AUX key prefix. We use the next 2 bytes of the key for the directory / aux file type.
/// We have one-to-one mapping for each of the aux file that we support. We hash the remaining part of the path
/// (usually a single file name, or several components) into 13-byte hash. The way we determine the 2-byte prefix
/// is roughly based on the first two components of the path, one unique number for one component.
///
/// * pg_logical/mappings -> 0x0101
/// * pg_logical/snapshots -> 0x0102
/// * pg_logical/replorigin_checkpoint -> 0x0103
/// * pg_logical/others -> 0x01FF
/// * pg_replslot/ -> 0x0201
/// * others -> 0xFFFF
///
/// If you add new AUX files to this function, please also add a test case to `test_encoding_portable`.
/// The new file type must have never been written to the storage before. Otherwise, there could be data
/// corruptions as the new file belongs to a new prefix but it might have been stored under the `others` prefix.
pub fn encode_aux_file_key(path: &str) -> Key {
if let Some(fname) = path.strip_prefix("pg_logical/mappings/") {
aux_hash_to_metadata_key(AUX_DIR_PG_LOGICAL, 0x01, fname.as_bytes())
} else if let Some(fname) = path.strip_prefix("pg_logical/snapshots/") {
aux_hash_to_metadata_key(AUX_DIR_PG_LOGICAL, 0x02, fname.as_bytes())
} else if path == "pg_logical/replorigin_checkpoint" {
aux_hash_to_metadata_key(AUX_DIR_PG_LOGICAL, 0x03, b"")
} else if let Some(fname) = path.strip_prefix("pg_logical/") {
if cfg!(debug_assertions) {
warn!(
"unsupported pg_logical aux file type: {}, putting to 0x01FF, would affect path scanning",
path
);
}
aux_hash_to_metadata_key(AUX_DIR_PG_LOGICAL, 0xFF, fname.as_bytes())
} else if let Some(fname) = path.strip_prefix("pg_replslot/") {
aux_hash_to_metadata_key(AUX_DIR_PG_REPLSLOT, 0x01, fname.as_bytes())
} else {
if cfg!(debug_assertions) {
warn!(
"unsupported aux file type: {}, putting to 0xFFFF, would affect path scanning",
path
);
}
aux_hash_to_metadata_key(AUX_DIR_PG_UNKNOWN, 0xFF, path.as_bytes())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_hash_portable() {
// AUX file encoding requires the hash to be portable across all platforms. This test case checks
// if the algorithm produces the same hash across different environments.
assert_eq!(
305317690835051308206966631765527126151,
twox_hash::xxh3::hash128("test1".as_bytes())
);
assert_eq!(
85104974691013376326742244813280798847,
twox_hash::xxh3::hash128("test/test2".as_bytes())
);
assert_eq!(0, twox_hash::xxh3::hash128("".as_bytes()));
}
#[test]
fn test_encoding_portable() {
// To correct retrieve AUX files, the generated keys for the same file must be the same for all versions
// of the page server.
assert_eq!(
"6200000101E5B20C5F8DD5AA3289D6D9EAFA",
encode_aux_file_key("pg_logical/mappings/test1").to_string()
);
assert_eq!(
"620000010239AAC544893139B26F501B97E6",
encode_aux_file_key("pg_logical/snapshots/test2").to_string()
);
assert_eq!(
"620000010300000000000000000000000000",
encode_aux_file_key("pg_logical/replorigin_checkpoint").to_string()
);
assert_eq!(
"62000001FF8635AF2134B7266EC5B4189FD6",
encode_aux_file_key("pg_logical/unsupported").to_string()
);
assert_eq!(
"6200000201772D0E5D71DE14DA86142A1619",
encode_aux_file_key("pg_replslot/test3").to_string()
);
assert_eq!(
"620000FFFF1866EBEB53B807B26A2416F317",
encode_aux_file_key("other_file_not_supported").to_string()
);
}
}

View File

@@ -13,7 +13,7 @@
use anyhow::{anyhow, bail, ensure, Context};
use bytes::{BufMut, Bytes, BytesMut};
use fail::fail_point;
use pageserver_api::key::{key_to_slru_block, rel_block_to_key, Key};
use pageserver_api::key::{key_to_slru_block, Key};
use postgres_ffi::pg_constants;
use std::fmt::Write as FmtWrite;
use std::time::SystemTime;
@@ -297,20 +297,7 @@ where
if rel.forknum == INIT_FORKNUM {
// I doubt we need _init fork itself, but having it at least
// serves as a marker relation is unlogged.
if let Err(_e) = self.add_rel(rel, rel).await {
if self
.timeline
.get_shard_identity()
.is_key_buggy_forknum(&rel_block_to_key(rel, 0x0))
{
// Workaround https://github.com/neondatabase/neon/issues/7451 -- if we have an unlogged relation
// whose INIT_FORKNUM is not correctly on shard zero, then omit it in the basebackup. This allows
// postgres to start up. The relation won't work, but it will be possible to DROP TABLE on it and
// recreate.
tracing::warn!("Omitting relation {rel} for issue #7451: drop and recreate this unlogged relation");
continue;
}
};
self.add_rel(rel, rel).await?;
self.add_rel(rel, rel.with_forknum(MAIN_FORKNUM)).await?;
continue;
}
@@ -376,7 +363,7 @@ where
async fn add_rel(&mut self, src: RelTag, dst: RelTag) -> anyhow::Result<()> {
let nblocks = self
.timeline
.get_rel_size(src, Version::Lsn(self.lsn), self.ctx)
.get_rel_size(src, Version::Lsn(self.lsn), false, self.ctx)
.await?;
// If the relation is empty, create an empty file
@@ -397,7 +384,7 @@ where
for blknum in startblk..endblk {
let img = self
.timeline
.get_rel_page_at_lsn(src, blknum, Version::Lsn(self.lsn), self.ctx)
.get_rel_page_at_lsn(src, blknum, Version::Lsn(self.lsn), false, self.ctx)
.await?;
segment_data.extend_from_slice(&img[..]);
}

View File

@@ -121,10 +121,8 @@ fn main() -> anyhow::Result<()> {
&[("node_id", &conf.id.to_string())],
);
// after setting up logging, log the effective IO engine choice and read path implementations
// after setting up logging, log the effective IO engine choice
info!(?conf.virtual_file_io_engine, "starting with virtual_file IO engine");
info!(?conf.get_impl, "starting with get page implementation");
info!(?conf.get_vectored_impl, "starting with vectored get page implementation");
let tenants_path = conf.tenants_path();
if !tenants_path.exists() {
@@ -287,7 +285,6 @@ fn start_pageserver(
))
.unwrap();
pageserver::preinitialize_metrics();
pageserver::metrics::wal_redo::set_process_kind_metric(conf.walredo_process_kind);
// If any failpoints were set from FAILPOINTS environment variable,
// print them to the log for debugging purposes

View File

@@ -30,9 +30,9 @@ use utils::{
logging::LogFormat,
};
use crate::tenant::config::TenantConfOpt;
use crate::tenant::timeline::GetVectoredImpl;
use crate::tenant::vectored_blob_io::MaxVectoredReadBytes;
use crate::tenant::{config::TenantConfOpt, timeline::GetImpl};
use crate::tenant::{
TENANTS_SEGMENT_NAME, TENANT_DELETED_MARKER_FILE_NAME, TIMELINES_SEGMENT_NAME,
};
@@ -91,16 +91,12 @@ pub mod defaults {
pub const DEFAULT_GET_VECTORED_IMPL: &str = "sequential";
pub const DEFAULT_GET_IMPL: &str = "legacy";
pub const DEFAULT_MAX_VECTORED_READ_BYTES: usize = 128 * 1024; // 128 KiB
pub const DEFAULT_VALIDATE_VECTORED_GET: bool = true;
pub const DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB: usize = 0;
pub const DEFAULT_WALREDO_PROCESS_KIND: &str = "sync";
///
/// Default built-in configuration file.
///
@@ -140,14 +136,10 @@ pub mod defaults {
#get_vectored_impl = '{DEFAULT_GET_VECTORED_IMPL}'
#get_impl = '{DEFAULT_GET_IMPL}'
#max_vectored_read_bytes = '{DEFAULT_MAX_VECTORED_READ_BYTES}'
#validate_vectored_get = '{DEFAULT_VALIDATE_VECTORED_GET}'
#walredo_process_kind = '{DEFAULT_WALREDO_PROCESS_KIND}'
[tenant_config]
#checkpoint_distance = {DEFAULT_CHECKPOINT_DISTANCE} # in bytes
#checkpoint_timeout = {DEFAULT_CHECKPOINT_TIMEOUT}
@@ -288,8 +280,6 @@ pub struct PageServerConf {
pub get_vectored_impl: GetVectoredImpl,
pub get_impl: GetImpl,
pub max_vectored_read_bytes: MaxVectoredReadBytes,
pub validate_vectored_get: bool,
@@ -300,8 +290,6 @@ pub struct PageServerConf {
///
/// Setting this to zero disables limits on total ephemeral layer size.
pub ephemeral_bytes_per_memory_kb: usize,
pub walredo_process_kind: crate::walredo::ProcessKind,
}
/// We do not want to store this in a PageServerConf because the latter may be logged
@@ -420,15 +408,11 @@ struct PageServerConfigBuilder {
get_vectored_impl: BuilderValue<GetVectoredImpl>,
get_impl: BuilderValue<GetImpl>,
max_vectored_read_bytes: BuilderValue<MaxVectoredReadBytes>,
validate_vectored_get: BuilderValue<bool>,
ephemeral_bytes_per_memory_kb: BuilderValue<usize>,
walredo_process_kind: BuilderValue<crate::walredo::ProcessKind>,
}
impl PageServerConfigBuilder {
@@ -511,14 +495,11 @@ impl PageServerConfigBuilder {
virtual_file_io_engine: Set(DEFAULT_VIRTUAL_FILE_IO_ENGINE.parse().unwrap()),
get_vectored_impl: Set(DEFAULT_GET_VECTORED_IMPL.parse().unwrap()),
get_impl: Set(DEFAULT_GET_IMPL.parse().unwrap()),
max_vectored_read_bytes: Set(MaxVectoredReadBytes(
NonZeroUsize::new(DEFAULT_MAX_VECTORED_READ_BYTES).unwrap(),
)),
validate_vectored_get: Set(DEFAULT_VALIDATE_VECTORED_GET),
ephemeral_bytes_per_memory_kb: Set(DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB),
walredo_process_kind: Set(DEFAULT_WALREDO_PROCESS_KIND.parse().unwrap()),
}
}
}
@@ -690,10 +671,6 @@ impl PageServerConfigBuilder {
self.get_vectored_impl = BuilderValue::Set(value);
}
pub fn get_impl(&mut self, value: GetImpl) {
self.get_impl = BuilderValue::Set(value);
}
pub fn get_max_vectored_read_bytes(&mut self, value: MaxVectoredReadBytes) {
self.max_vectored_read_bytes = BuilderValue::Set(value);
}
@@ -706,10 +683,6 @@ impl PageServerConfigBuilder {
self.ephemeral_bytes_per_memory_kb = BuilderValue::Set(value);
}
pub fn get_walredo_process_kind(&mut self, value: crate::walredo::ProcessKind) {
self.walredo_process_kind = BuilderValue::Set(value);
}
pub fn build(self) -> anyhow::Result<PageServerConf> {
let default = Self::default_values();
@@ -763,11 +736,9 @@ impl PageServerConfigBuilder {
secondary_download_concurrency,
ingest_batch_size,
get_vectored_impl,
get_impl,
max_vectored_read_bytes,
validate_vectored_get,
ephemeral_bytes_per_memory_kb,
walredo_process_kind,
}
CUSTOM LOGIC
{
@@ -1049,9 +1020,6 @@ impl PageServerConf {
"get_vectored_impl" => {
builder.get_vectored_impl(parse_toml_from_str("get_vectored_impl", item)?)
}
"get_impl" => {
builder.get_impl(parse_toml_from_str("get_impl", item)?)
}
"max_vectored_read_bytes" => {
let bytes = parse_toml_u64("max_vectored_read_bytes", item)? as usize;
builder.get_max_vectored_read_bytes(
@@ -1064,9 +1032,6 @@ impl PageServerConf {
"ephemeral_bytes_per_memory_kb" => {
builder.get_ephemeral_bytes_per_memory_kb(parse_toml_u64("ephemeral_bytes_per_memory_kb", item)? as usize)
}
"walredo_process_kind" => {
builder.get_walredo_process_kind(parse_toml_from_str("walredo_process_kind", item)?)
}
_ => bail!("unrecognized pageserver option '{key}'"),
}
}
@@ -1143,14 +1108,12 @@ impl PageServerConf {
ingest_batch_size: defaults::DEFAULT_INGEST_BATCH_SIZE,
virtual_file_io_engine: DEFAULT_VIRTUAL_FILE_IO_ENGINE.parse().unwrap(),
get_vectored_impl: defaults::DEFAULT_GET_VECTORED_IMPL.parse().unwrap(),
get_impl: defaults::DEFAULT_GET_IMPL.parse().unwrap(),
max_vectored_read_bytes: MaxVectoredReadBytes(
NonZeroUsize::new(defaults::DEFAULT_MAX_VECTORED_READ_BYTES)
.expect("Invalid default constant"),
),
validate_vectored_get: defaults::DEFAULT_VALIDATE_VECTORED_GET,
ephemeral_bytes_per_memory_kb: defaults::DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB,
walredo_process_kind: defaults::DEFAULT_WALREDO_PROCESS_KIND.parse().unwrap(),
}
}
}
@@ -1383,14 +1346,12 @@ background_task_maximum_delay = '334 s'
ingest_batch_size: defaults::DEFAULT_INGEST_BATCH_SIZE,
virtual_file_io_engine: DEFAULT_VIRTUAL_FILE_IO_ENGINE.parse().unwrap(),
get_vectored_impl: defaults::DEFAULT_GET_VECTORED_IMPL.parse().unwrap(),
get_impl: defaults::DEFAULT_GET_IMPL.parse().unwrap(),
max_vectored_read_bytes: MaxVectoredReadBytes(
NonZeroUsize::new(defaults::DEFAULT_MAX_VECTORED_READ_BYTES)
.expect("Invalid default constant")
),
validate_vectored_get: defaults::DEFAULT_VALIDATE_VECTORED_GET,
ephemeral_bytes_per_memory_kb: defaults::DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB,
walredo_process_kind: defaults::DEFAULT_WALREDO_PROCESS_KIND.parse().unwrap(),
ephemeral_bytes_per_memory_kb: defaults::DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB
},
"Correct defaults should be used when no config values are provided"
);
@@ -1457,14 +1418,12 @@ background_task_maximum_delay = '334 s'
ingest_batch_size: 100,
virtual_file_io_engine: DEFAULT_VIRTUAL_FILE_IO_ENGINE.parse().unwrap(),
get_vectored_impl: defaults::DEFAULT_GET_VECTORED_IMPL.parse().unwrap(),
get_impl: defaults::DEFAULT_GET_IMPL.parse().unwrap(),
max_vectored_read_bytes: MaxVectoredReadBytes(
NonZeroUsize::new(defaults::DEFAULT_MAX_VECTORED_READ_BYTES)
.expect("Invalid default constant")
),
validate_vectored_get: defaults::DEFAULT_VALIDATE_VECTORED_GET,
ephemeral_bytes_per_memory_kb: defaults::DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB,
walredo_process_kind: defaults::DEFAULT_WALREDO_PROCESS_KIND.parse().unwrap(),
ephemeral_bytes_per_memory_kb: defaults::DEFAULT_EPHEMERAL_BYTES_PER_MEMORY_KB
},
"Should be able to parse all basic config values correctly"
);
@@ -1577,7 +1536,6 @@ broker_endpoint = '{broker_endpoint}'
endpoint: Some(endpoint.clone()),
concurrency_limit: s3_concurrency_limit,
max_keys_per_list_response: None,
upload_storage_class: None,
}),
timeout: RemoteStorageConfig::DEFAULT_TIMEOUT,
},

View File

@@ -304,7 +304,7 @@ async fn calculate_synthetic_size_worker(
continue;
}
if !tenant_shard_id.is_shard_zero() {
if !tenant_shard_id.is_zero() {
// We only send consumption metrics from shard 0, so don't waste time calculating
// synthetic size on other shards.
continue;

View File

@@ -199,7 +199,7 @@ pub(super) async fn collect_all_metrics(
};
let tenants = futures::stream::iter(tenants).filter_map(|(id, state, _)| async move {
if state != TenantState::Active || !id.is_shard_zero() {
if state != TenantState::Active || !id.is_zero() {
None
} else {
tenant_manager

View File

@@ -58,6 +58,24 @@ paths:
responses:
"200":
description: The reload completed successfully.
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error (also hits if no keys were found)
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/tenant/{tenant_id}:
parameters:
@@ -75,14 +93,62 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/TenantInfo"
"400":
description: Error when no tenant id found in path or no timeline id
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
delete:
description: |
Attempts to delete specified tenant. 500, 503 and 409 errors should be retried until 404 is retrieved.
404 means that deletion successfully finished"
responses:
"400":
description: Error when no tenant id found in path
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"404":
description: Tenant not found. This is the success path.
description: Tenant not found
content:
application/json:
schema:
@@ -99,6 +165,18 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/PreconditionFailedError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/time_travel_remote_storage:
parameters:
@@ -128,6 +206,36 @@ paths:
application/json:
schema:
type: string
"400":
description: Error when no tenant id found in path or invalid timestamp
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/timeline:
parameters:
@@ -147,6 +255,36 @@ paths:
type: array
items:
$ref: "#/components/schemas/TimelineInfo"
"400":
description: Error when no tenant id found in path
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/timeline/{timeline_id}:
@@ -171,12 +309,60 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/TimelineInfo"
"400":
description: Error when no tenant id found in path or no timeline id
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
delete:
description: "Attempts to delete specified timeline. 500 and 409 errors should be retried"
responses:
"400":
description: Error when no tenant id found in path or no timeline id
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"404":
description: Timeline not found. This is the success path.
description: Timeline not found
content:
application/json:
schema:
@@ -193,6 +379,18 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/PreconditionFailedError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/timeline/{timeline_id}/get_timestamp_of_lsn:
parameters:
@@ -225,6 +423,36 @@ paths:
schema:
type: string
format: date-time
"400":
description: Error when no tenant id found in path, no timeline id or invalid timestamp
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"404":
description: Timeline not found, or there is no timestamp information for the given lsn
content:
application/json:
schema:
$ref: "#/components/schemas/NotFoundError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/tenant/{tenant_id}/timeline/{timeline_id}/get_lsn_by_timestamp:
parameters:
@@ -256,6 +484,36 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/LsnByTimestampResponse"
"400":
description: Error when no tenant id found in path, no timeline id or invalid timestamp
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/timeline/{timeline_id}/do_gc:
parameters:
@@ -279,6 +537,36 @@ paths:
application/json:
schema:
type: string
"400":
description: Error when no tenant id found in path, no timeline id or invalid timestamp
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_shard_id}/location_config:
parameters:
- name: tenant_shard_id
@@ -340,6 +628,24 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/TenantLocationConfigResponse"
"503":
description: Tenant's state cannot be changed right now. Wait a few seconds and retry.
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"409":
description: |
The tenant is already known to Pageserver in some way,
@@ -356,6 +662,12 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/ConflictError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
/v1/tenant/{tenant_id}/ignore:
parameters:
- name: tenant_id
@@ -372,6 +684,36 @@ paths:
responses:
"200":
description: Tenant ignored
"400":
description: Error when no tenant id found in path parameters
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/load:
@@ -398,6 +740,36 @@ paths:
responses:
"202":
description: Tenant scheduled to load successfully
"400":
description: Error when no tenant id found in path parameters
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/{timeline_id}/preserve_initdb_archive:
parameters:
@@ -418,6 +790,37 @@ paths:
responses:
"202":
description: Tenant scheduled to load successfully
"404":
description: No tenant or timeline found for the specified ids
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/synthetic_size:
parameters:
@@ -436,8 +839,31 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/SyntheticSizeResponse"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
# This route has no handler. TODO: remove?
/v1/tenant/{tenant_id}/size:
parameters:
- name: tenant_id
@@ -519,6 +945,18 @@ paths:
responses:
"200":
description: Success
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_shard_id}/secondary/download:
parameters:
@@ -549,6 +987,20 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/SecondaryProgress"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/timeline/:
parameters:
@@ -591,6 +1043,24 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/TimelineInfo"
"400":
description: Malformed timeline create request
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"406":
description: Permanently unsatisfiable request, don't retry.
content:
@@ -609,6 +1079,18 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/Error"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/:
get:
@@ -622,6 +1104,30 @@ paths:
type: array
items:
$ref: "#/components/schemas/TenantInfo"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
post:
description: |
@@ -642,12 +1148,43 @@ paths:
application/json:
schema:
type: string
"400":
description: Malformed tenant create request
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"409":
description: Tenant already exists, creation skipped
content:
application/json:
schema:
$ref: "#/components/schemas/ConflictError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/config:
put:
@@ -669,6 +1206,36 @@ paths:
type: array
items:
$ref: "#/components/schemas/TenantInfo"
"400":
description: Malformed tenant config request
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/tenant/{tenant_id}/config/:
parameters:
@@ -688,6 +1255,42 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/TenantConfigResponse"
"400":
description: Malformed get tenanant config request
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"401":
description: Unauthorized Error
content:
application/json:
schema:
$ref: "#/components/schemas/UnauthorizedError"
"403":
description: Forbidden Error
content:
application/json:
schema:
$ref: "#/components/schemas/ForbiddenError"
"404":
description: Tenand or timeline were not found
content:
application/json:
schema:
$ref: "#/components/schemas/NotFoundError"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
"503":
description: Temporarily unavailable, please retry.
content:
application/json:
schema:
$ref: "#/components/schemas/ServiceUnavailableError"
/v1/utilization:
get:
@@ -701,6 +1304,12 @@ paths:
application/json:
schema:
$ref: "#/components/schemas/PageserverUtilization"
"500":
description: Generic operation error
content:
application/json:
schema:
$ref: "#/components/schemas/Error"
components:
securitySchemes:

View File

@@ -19,8 +19,6 @@ use pageserver_api::models::LocationConfigListResponse;
use pageserver_api::models::ShardParameters;
use pageserver_api::models::TenantDetails;
use pageserver_api::models::TenantLocationConfigResponse;
use pageserver_api::models::TenantScanRemoteStorageResponse;
use pageserver_api::models::TenantScanRemoteStorageShard;
use pageserver_api::models::TenantShardLocation;
use pageserver_api::models::TenantShardSplitRequest;
use pageserver_api::models::TenantShardSplitResponse;
@@ -31,7 +29,6 @@ use pageserver_api::models::{
};
use pageserver_api::shard::ShardCount;
use pageserver_api::shard::TenantShardId;
use remote_storage::DownloadError;
use remote_storage::GenericRemoteStorage;
use remote_storage::TimeTravelError;
use tenant_size_model::{SizeResult, StorageModel};
@@ -57,9 +54,6 @@ use crate::tenant::mgr::{
};
use crate::tenant::mgr::{TenantSlot, UpsertLocationError};
use crate::tenant::remote_timeline_client;
use crate::tenant::remote_timeline_client::download_index_part;
use crate::tenant::remote_timeline_client::list_remote_tenant_shards;
use crate::tenant::remote_timeline_client::list_remote_timelines;
use crate::tenant::secondary::SecondaryController;
use crate::tenant::size::ModelInputs;
use crate::tenant::storage_layer::LayerAccessStatsReset;
@@ -166,9 +160,6 @@ impl From<PageReconstructError> for ApiError {
fn from(pre: PageReconstructError) -> ApiError {
match pre {
PageReconstructError::Other(pre) => ApiError::InternalServerError(pre),
PageReconstructError::MissingKey(e) => {
ApiError::InternalServerError(anyhow::anyhow!("{e}"))
}
PageReconstructError::Cancelled => {
ApiError::InternalServerError(anyhow::anyhow!("request was cancelled"))
}
@@ -466,12 +457,8 @@ async fn reload_auth_validation_keys_handler(
json_response(StatusCode::OK, ())
}
Err(e) => {
let err_msg = "Error reloading public keys";
warn!("Error reloading public keys from {key_path:?}: {e:}");
json_response(
StatusCode::INTERNAL_SERVER_ERROR,
HttpErrorBody::from_msg(err_msg.to_string()),
)
json_response(StatusCode::INTERNAL_SERVER_ERROR, ())
}
}
}
@@ -709,7 +696,7 @@ async fn get_lsn_by_timestamp_handler(
check_permission(&request, Some(tenant_shard_id.tenant_id))?;
let state = get_state(&request);
if !tenant_shard_id.is_shard_zero() {
if !tenant_shard_id.is_zero() {
// Requires SLRU contents, which are only stored on shard zero
return Err(ApiError::BadRequest(anyhow!(
"Size calculations are only available on shard zero"
@@ -760,7 +747,7 @@ async fn get_timestamp_of_lsn_handler(
check_permission(&request, Some(tenant_shard_id.tenant_id))?;
let state = get_state(&request);
if !tenant_shard_id.is_shard_zero() {
if !tenant_shard_id.is_zero() {
// Requires SLRU contents, which are only stored on shard zero
return Err(ApiError::BadRequest(anyhow!(
"Size calculations are only available on shard zero"
@@ -785,9 +772,7 @@ async fn get_timestamp_of_lsn_handler(
let time = format_rfc3339(postgres_ffi::from_pg_timestamp(time)).to_string();
json_response(StatusCode::OK, time)
}
None => Err(ApiError::NotFound(
anyhow::anyhow!("Timestamp for lsn {} not found", lsn).into(),
)),
None => json_response(StatusCode::NOT_FOUND, ()),
}
}
@@ -1101,7 +1086,7 @@ async fn tenant_size_handler(
let headers = request.headers();
let state = get_state(&request);
if !tenant_shard_id.is_shard_zero() {
if !tenant_shard_id.is_zero() {
return Err(ApiError::BadRequest(anyhow!(
"Size calculations are only available on shard zero"
)));
@@ -2041,79 +2026,6 @@ async fn secondary_upload_handler(
json_response(StatusCode::OK, ())
}
async fn tenant_scan_remote_handler(
request: Request<Body>,
cancel: CancellationToken,
) -> Result<Response<Body>, ApiError> {
let state = get_state(&request);
let tenant_id: TenantId = parse_request_param(&request, "tenant_id")?;
let Some(remote_storage) = state.remote_storage.as_ref() else {
return Err(ApiError::BadRequest(anyhow::anyhow!(
"Remote storage not configured"
)));
};
let mut response = TenantScanRemoteStorageResponse::default();
let (shards, _other_keys) =
list_remote_tenant_shards(remote_storage, tenant_id, cancel.clone())
.await
.map_err(|e| ApiError::InternalServerError(anyhow::anyhow!(e)))?;
for tenant_shard_id in shards {
let (timeline_ids, _other_keys) =
list_remote_timelines(remote_storage, tenant_shard_id, cancel.clone())
.await
.map_err(|e| ApiError::InternalServerError(anyhow::anyhow!(e)))?;
let mut generation = Generation::none();
for timeline_id in timeline_ids {
match download_index_part(
remote_storage,
&tenant_shard_id,
&timeline_id,
Generation::MAX,
&cancel,
)
.instrument(info_span!("download_index_part",
tenant_id=%tenant_shard_id.tenant_id,
shard_id=%tenant_shard_id.shard_slug(),
%timeline_id))
.await
{
Ok((index_part, index_generation)) => {
tracing::info!("Found timeline {tenant_shard_id}/{timeline_id} metadata (gen {index_generation:?}, {} layers, {} consistent LSN)",
index_part.layer_metadata.len(), index_part.get_disk_consistent_lsn());
generation = std::cmp::max(generation, index_generation);
}
Err(DownloadError::NotFound) => {
// This is normal for tenants that were created with multiple shards: they have an unsharded path
// containing the timeline's initdb tarball but no index. Otherwise it is a bit strange.
tracing::info!("Timeline path {tenant_shard_id}/{timeline_id} exists in remote storage but has no index, skipping");
continue;
}
Err(e) => {
return Err(ApiError::InternalServerError(anyhow::anyhow!(e)));
}
};
}
response.shards.push(TenantScanRemoteStorageShard {
tenant_shard_id,
generation: generation.into(),
});
}
if response.shards.is_empty() {
return Err(ApiError::NotFound(
anyhow::anyhow!("No shards found for tenant ID {tenant_id}").into(),
));
}
json_response(StatusCode::OK, response)
}
async fn secondary_download_handler(
request: Request<Body>,
_cancel: CancellationToken,
@@ -2510,9 +2422,6 @@ pub fn make_router(
.post("/v1/tenant/:tenant_shard_id/heatmap_upload", |r| {
api_handler(r, secondary_upload_handler)
})
.get("/v1/tenant/:tenant_id/scan_remote_storage", |r| {
api_handler(r, tenant_scan_remote_handler)
})
.put("/v1/disk_usage_eviction/run", |r| {
api_handler(r, disk_usage_eviction_run)
})

View File

@@ -12,7 +12,6 @@ pub mod disk_usage_eviction_task;
pub mod http;
pub mod import_datadir;
pub use pageserver_api::keyspace;
pub mod aux_file;
pub mod metrics;
pub mod page_cache;
pub mod page_service;

View File

@@ -51,9 +51,6 @@ pub(crate) enum StorageTimeOperation {
#[strum(serialize = "gc")]
Gc,
#[strum(serialize = "update gc info")]
UpdateGcInfo,
#[strum(serialize = "create tenant")]
CreateTenant,
}
@@ -89,58 +86,41 @@ pub(crate) static STORAGE_TIME_GLOBAL: Lazy<HistogramVec> = Lazy::new(|| {
.expect("failed to define a metric")
});
pub(crate) static READ_NUM_LAYERS_VISITED: Lazy<Histogram> = Lazy::new(|| {
pub(crate) static READ_NUM_FS_LAYERS: Lazy<Histogram> = Lazy::new(|| {
register_histogram!(
"pageserver_layers_visited_per_read_global",
"Number of layers visited to reconstruct one key",
vec![1.0, 4.0, 8.0, 16.0, 32.0, 64.0, 128.0, 256.0, 512.0, 1024.0],
)
.expect("failed to define a metric")
});
pub(crate) static VEC_READ_NUM_LAYERS_VISITED: Lazy<Histogram> = Lazy::new(|| {
register_histogram!(
"pageserver_layers_visited_per_vectored_read_global",
"Average number of layers visited to reconstruct one key",
vec![1.0, 4.0, 8.0, 16.0, 32.0, 64.0, 128.0, 256.0, 512.0, 1024.0],
"pageserver_read_num_fs_layers",
"Number of persistent layers accessed for processing a read request, including those in the cache",
vec![1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 10.0, 20.0, 50.0, 100.0],
)
.expect("failed to define a metric")
});
// Metrics collected on operations on the storage repository.
#[derive(
Clone, Copy, enum_map::Enum, strum_macros::EnumString, strum_macros::Display, IntoStaticStr,
)]
pub(crate) enum GetKind {
Singular,
Vectored,
}
pub(crate) struct ReconstructTimeMetrics {
singular: Histogram,
vectored: Histogram,
ok: Histogram,
err: Histogram,
}
pub(crate) static RECONSTRUCT_TIME: Lazy<ReconstructTimeMetrics> = Lazy::new(|| {
let inner = register_histogram_vec!(
"pageserver_getpage_reconstruct_seconds",
"Time spent in reconstruct_value (reconstruct a page from deltas)",
&["get_kind"],
&["result"],
CRITICAL_OP_BUCKETS.into(),
)
.expect("failed to define a metric");
ReconstructTimeMetrics {
singular: inner.with_label_values(&[GetKind::Singular.into()]),
vectored: inner.with_label_values(&[GetKind::Vectored.into()]),
ok: inner.get_metric_with_label_values(&["ok"]).unwrap(),
err: inner.get_metric_with_label_values(&["err"]).unwrap(),
}
});
impl ReconstructTimeMetrics {
pub(crate) fn for_get_kind(&self, get_kind: GetKind) -> &Histogram {
match get_kind {
GetKind::Singular => &self.singular,
GetKind::Vectored => &self.vectored,
pub(crate) fn for_result<T, E>(&self, result: &Result<T, E>) -> &Histogram {
match result {
Ok(_) => &self.ok,
Err(_) => &self.err,
}
}
}
@@ -153,33 +133,13 @@ pub(crate) static MATERIALIZED_PAGE_CACHE_HIT_DIRECT: Lazy<IntCounter> = Lazy::n
.expect("failed to define a metric")
});
pub(crate) struct ReconstructDataTimeMetrics {
singular: Histogram,
vectored: Histogram,
}
impl ReconstructDataTimeMetrics {
pub(crate) fn for_get_kind(&self, get_kind: GetKind) -> &Histogram {
match get_kind {
GetKind::Singular => &self.singular,
GetKind::Vectored => &self.vectored,
}
}
}
pub(crate) static GET_RECONSTRUCT_DATA_TIME: Lazy<ReconstructDataTimeMetrics> = Lazy::new(|| {
let inner = register_histogram_vec!(
pub(crate) static GET_RECONSTRUCT_DATA_TIME: Lazy<Histogram> = Lazy::new(|| {
register_histogram!(
"pageserver_getpage_get_reconstruct_data_seconds",
"Time spent in get_reconstruct_value_data",
&["get_kind"],
CRITICAL_OP_BUCKETS.into(),
)
.expect("failed to define a metric");
ReconstructDataTimeMetrics {
singular: inner.with_label_values(&[GetKind::Singular.into()]),
vectored: inner.with_label_values(&[GetKind::Vectored.into()]),
}
.expect("failed to define a metric")
});
pub(crate) static MATERIALIZED_PAGE_CACHE_HIT: Lazy<IntCounter> = Lazy::new(|| {
@@ -1522,6 +1482,35 @@ pub(crate) static DELETION_QUEUE: Lazy<DeletionQueueMetrics> = Lazy::new(|| {
}
});
pub(crate) struct WalIngestMetrics {
pub(crate) bytes_received: IntCounter,
pub(crate) records_received: IntCounter,
pub(crate) records_committed: IntCounter,
pub(crate) records_filtered: IntCounter,
}
pub(crate) static WAL_INGEST: Lazy<WalIngestMetrics> = Lazy::new(|| WalIngestMetrics {
bytes_received: register_int_counter!(
"pageserver_wal_ingest_bytes_received",
"Bytes of WAL ingested from safekeepers",
)
.unwrap(),
records_received: register_int_counter!(
"pageserver_wal_ingest_records_received",
"Number of WAL records received from safekeepers"
)
.expect("failed to define a metric"),
records_committed: register_int_counter!(
"pageserver_wal_ingest_records_committed",
"Number of WAL records which resulted in writes to pageserver storage"
)
.expect("failed to define a metric"),
records_filtered: register_int_counter!(
"pageserver_wal_ingest_records_filtered",
"Number of WAL records filtered out due to sharding"
)
.expect("failed to define a metric"),
});
pub(crate) struct SecondaryModeMetrics {
pub(crate) upload_heatmap: IntCounter,
pub(crate) upload_heatmap_errors: IntCounter,
@@ -1529,8 +1518,7 @@ pub(crate) struct SecondaryModeMetrics {
pub(crate) download_heatmap: IntCounter,
pub(crate) download_layer: IntCounter,
}
pub(crate) static SECONDARY_MODE: Lazy<SecondaryModeMetrics> = Lazy::new(|| {
SecondaryModeMetrics {
pub(crate) static SECONDARY_MODE: Lazy<SecondaryModeMetrics> = Lazy::new(|| SecondaryModeMetrics {
upload_heatmap: register_int_counter!(
"pageserver_secondary_upload_heatmap",
"Number of heatmaps written to remote storage by attached tenants"
@@ -1548,7 +1536,7 @@ pub(crate) static SECONDARY_MODE: Lazy<SecondaryModeMetrics> = Lazy::new(|| {
.expect("failed to define a metric"),
download_heatmap: register_int_counter!(
"pageserver_secondary_download_heatmap",
"Number of downloads of heatmaps by secondary mode locations, including when it hasn't changed"
"Number of downloads of heatmaps by secondary mode locations"
)
.expect("failed to define a metric"),
download_layer: register_int_counter!(
@@ -1556,7 +1544,6 @@ pub(crate) static SECONDARY_MODE: Lazy<SecondaryModeMetrics> = Lazy::new(|| {
"Number of downloads of layers by secondary mode locations"
)
.expect("failed to define a metric"),
}
});
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
@@ -1723,43 +1710,6 @@ macro_rules! redo_bytes_histogram_count_buckets {
};
}
pub(crate) struct WalIngestMetrics {
pub(crate) bytes_received: IntCounter,
pub(crate) records_received: IntCounter,
pub(crate) records_committed: IntCounter,
pub(crate) records_filtered: IntCounter,
pub(crate) time_spent_on_ingest: Histogram,
}
pub(crate) static WAL_INGEST: Lazy<WalIngestMetrics> = Lazy::new(|| WalIngestMetrics {
bytes_received: register_int_counter!(
"pageserver_wal_ingest_bytes_received",
"Bytes of WAL ingested from safekeepers",
)
.unwrap(),
records_received: register_int_counter!(
"pageserver_wal_ingest_records_received",
"Number of WAL records received from safekeepers"
)
.expect("failed to define a metric"),
records_committed: register_int_counter!(
"pageserver_wal_ingest_records_committed",
"Number of WAL records which resulted in writes to pageserver storage"
)
.expect("failed to define a metric"),
records_filtered: register_int_counter!(
"pageserver_wal_ingest_records_filtered",
"Number of WAL records filtered out due to sharding"
)
.expect("failed to define a metric"),
time_spent_on_ingest: register_histogram!(
"pageserver_wal_ingest_put_value_seconds",
"Actual time spent on ingesting a record",
redo_histogram_time_buckets!(),
)
.expect("failed to define a metric"),
});
pub(crate) static WAL_REDO_TIME: Lazy<Histogram> = Lazy::new(|| {
register_histogram!(
"pageserver_wal_redo_seconds",
@@ -1869,29 +1819,6 @@ impl Default for WalRedoProcessCounters {
pub(crate) static WAL_REDO_PROCESS_COUNTERS: Lazy<WalRedoProcessCounters> =
Lazy::new(WalRedoProcessCounters::default);
#[cfg(not(test))]
pub mod wal_redo {
use super::*;
static PROCESS_KIND: Lazy<std::sync::Mutex<UIntGaugeVec>> = Lazy::new(|| {
std::sync::Mutex::new(
register_uint_gauge_vec!(
"pageserver_wal_redo_process_kind",
"The configured process kind for walredo",
&["kind"],
)
.unwrap(),
)
});
pub fn set_process_kind_metric(kind: crate::walredo::ProcessKind) {
// use guard to avoid races around the next two steps
let guard = PROCESS_KIND.lock().unwrap();
guard.reset();
guard.with_label_values(&[&format!("{kind}")]).set(1);
}
}
/// Similar to `prometheus::HistogramTimer` but does not record on drop.
pub(crate) struct StorageTimeMetricsTimer {
metrics: StorageTimeMetrics,
@@ -1913,22 +1840,6 @@ impl StorageTimeMetricsTimer {
self.metrics.timeline_count.inc();
self.metrics.global_histogram.observe(duration);
}
/// Turns this timer into a timer, which will always record -- usually this means recording
/// regardless an early `?` path was taken in a function.
pub(crate) fn record_on_drop(self) -> AlwaysRecordingStorageTimeMetricsTimer {
AlwaysRecordingStorageTimeMetricsTimer(Some(self))
}
}
pub(crate) struct AlwaysRecordingStorageTimeMetricsTimer(Option<StorageTimeMetricsTimer>);
impl Drop for AlwaysRecordingStorageTimeMetricsTimer {
fn drop(&mut self) {
if let Some(inner) = self.0.take() {
inner.stop_and_record();
}
}
}
/// Timing facilities for an globally histogrammed metric, which is supported by per tenant and
@@ -1989,7 +1900,6 @@ pub(crate) struct TimelineMetrics {
pub imitate_logical_size_histo: StorageTimeMetrics,
pub load_layer_map_histo: StorageTimeMetrics,
pub garbage_collect_histo: StorageTimeMetrics,
pub update_gc_info_histo: StorageTimeMetrics,
pub last_record_gauge: IntGauge,
resident_physical_size_gauge: UIntGauge,
/// copy of LayeredTimeline.current_logical_size
@@ -2050,12 +1960,6 @@ impl TimelineMetrics {
&shard_id,
&timeline_id,
);
let update_gc_info_histo = StorageTimeMetrics::new(
StorageTimeOperation::UpdateGcInfo,
&tenant_id,
&shard_id,
&timeline_id,
);
let last_record_gauge = LAST_RECORD_LSN
.get_metric_with_label_values(&[&tenant_id, &shard_id, &timeline_id])
.unwrap();
@@ -2098,7 +2002,6 @@ impl TimelineMetrics {
logical_size_histo,
imitate_logical_size_histo,
garbage_collect_histo,
update_gc_info_histo,
load_layer_map_histo,
last_record_gauge,
resident_physical_size_gauge,
@@ -2186,7 +2089,7 @@ impl TimelineMetrics {
pub(crate) fn remove_tenant_metrics(tenant_shard_id: &TenantShardId) {
// Only shard zero deals in synthetic sizes
if tenant_shard_id.is_shard_zero() {
if tenant_shard_id.is_zero() {
let tid = tenant_shard_id.tenant_id.to_string();
let _ = TENANT_SYNTHETIC_SIZE_METRIC.remove_label_values(&[&tid]);
}
@@ -2843,8 +2746,7 @@ pub fn preinitialize_metrics() {
// histograms
[
&READ_NUM_LAYERS_VISITED,
&VEC_READ_NUM_LAYERS_VISITED,
&READ_NUM_FS_LAYERS,
&WAIT_LSN_TIME,
&WAL_REDO_TIME,
&WAL_REDO_RECORDS_HISTOGRAM,

View File

@@ -1,5 +1,13 @@
//
//! The Page Service listens for client connections and serves their GetPage@LSN
//! requests.
//
// It is possible to connect here using usual psql/pgbench/libpq. Following
// commands are supported now:
// *status* -- show actual info about this pageserver,
// *pagestream* -- enter mode where smgr and pageserver talk with their
// custom protocol.
//
use anyhow::Context;
use async_compression::tokio::write::GzipEncoder;
@@ -15,7 +23,7 @@ use pageserver_api::models::{
PagestreamErrorResponse, PagestreamExistsRequest, PagestreamExistsResponse,
PagestreamFeMessage, PagestreamGetPageRequest, PagestreamGetPageResponse,
PagestreamGetSlruSegmentRequest, PagestreamGetSlruSegmentResponse, PagestreamNblocksRequest,
PagestreamNblocksResponse, PagestreamProtocolVersion,
PagestreamNblocksResponse,
};
use pageserver_api::shard::ShardIndex;
use pageserver_api::shard::ShardNumber;
@@ -543,7 +551,6 @@ impl PageServerHandler {
pgb: &mut PostgresBackend<IO>,
tenant_id: TenantId,
timeline_id: TimelineId,
protocol_version: PagestreamProtocolVersion,
ctx: RequestContext,
) -> Result<(), QueryError>
where
@@ -606,15 +613,14 @@ impl PageServerHandler {
t.trace(&copy_data_bytes)
}
let neon_fe_msg =
PagestreamFeMessage::parse(&mut copy_data_bytes.reader(), protocol_version)?;
let neon_fe_msg = PagestreamFeMessage::parse(&mut copy_data_bytes.reader())?;
// TODO: We could create a new per-request context here, with unique ID.
// Currently we use the same per-timeline context for all requests
let (response, span) = match neon_fe_msg {
PagestreamFeMessage::Exists(req) => {
let span = tracing::info_span!("handle_get_rel_exists_request", rel = %req.rel, req_lsn = %req.request_lsn);
let span = tracing::info_span!("handle_get_rel_exists_request", rel = %req.rel, req_lsn = %req.lsn);
(
self.handle_get_rel_exists_request(tenant_id, timeline_id, &req, &ctx)
.instrument(span.clone())
@@ -623,7 +629,7 @@ impl PageServerHandler {
)
}
PagestreamFeMessage::Nblocks(req) => {
let span = tracing::info_span!("handle_get_nblocks_request", rel = %req.rel, req_lsn = %req.request_lsn);
let span = tracing::info_span!("handle_get_nblocks_request", rel = %req.rel, req_lsn = %req.lsn);
(
self.handle_get_nblocks_request(tenant_id, timeline_id, &req, &ctx)
.instrument(span.clone())
@@ -633,7 +639,7 @@ impl PageServerHandler {
}
PagestreamFeMessage::GetPage(req) => {
// shard_id is filled in by the handler
let span = tracing::info_span!("handle_get_page_at_lsn_request", rel = %req.rel, blkno = %req.blkno, req_lsn = %req.request_lsn);
let span = tracing::info_span!("handle_get_page_at_lsn_request", rel = %req.rel, blkno = %req.blkno, req_lsn = %req.lsn);
(
self.handle_get_page_at_lsn_request(tenant_id, timeline_id, &req, &ctx)
.instrument(span.clone())
@@ -642,7 +648,7 @@ impl PageServerHandler {
)
}
PagestreamFeMessage::DbSize(req) => {
let span = tracing::info_span!("handle_db_size_request", dbnode = %req.dbnode, req_lsn = %req.request_lsn);
let span = tracing::info_span!("handle_db_size_request", dbnode = %req.dbnode, req_lsn = %req.lsn);
(
self.handle_db_size_request(tenant_id, timeline_id, &req, &ctx)
.instrument(span.clone())
@@ -651,7 +657,7 @@ impl PageServerHandler {
)
}
PagestreamFeMessage::GetSlruSegment(req) => {
let span = tracing::info_span!("handle_get_slru_segment_request", kind = %req.kind, segno = %req.segno, req_lsn = %req.request_lsn);
let span = tracing::info_span!("handle_get_slru_segment_request", kind = %req.kind, segno = %req.segno, req_lsn = %req.lsn);
(
self.handle_get_slru_segment_request(tenant_id, timeline_id, &req, &ctx)
.instrument(span.clone())
@@ -832,80 +838,78 @@ impl PageServerHandler {
/// Helper function to handle the LSN from client request.
///
/// Each GetPage (and Exists and Nblocks) request includes information about
/// which version of the page is being requested. The primary compute node
/// will always request the latest page version, by setting 'request_lsn' to
/// the last inserted or flushed WAL position, while a standby will request
/// a version at the LSN that it's currently caught up to.
/// which version of the page is being requested. The client can request the
/// latest version of the page, or the version that's valid at a particular
/// LSN. The primary compute node will always request the latest page
/// version, while a standby will request a version at the LSN that it's
/// currently caught up to.
///
/// In either case, if the page server hasn't received the WAL up to the
/// requested LSN yet, we will wait for it to arrive. The return value is
/// the LSN that should be used to look up the page versions.
///
/// In addition to the request LSN, each request carries another LSN,
/// 'not_modified_since', which is a hint to the pageserver that the client
/// knows that the page has not been modified between 'not_modified_since'
/// and the request LSN. This allows skipping the wait, as long as the WAL
/// up to 'not_modified_since' has arrived. If the client doesn't have any
/// information about when the page was modified, it will use
/// not_modified_since == lsn. If the client lies and sends a too low
/// not_modified_hint such that there are in fact later page versions, the
/// behavior is undefined: the pageserver may return any of the page versions
/// or an error.
async fn wait_or_get_last_lsn(
timeline: &Timeline,
request_lsn: Lsn,
not_modified_since: Lsn,
mut lsn: Lsn,
latest: bool,
latest_gc_cutoff_lsn: &RcuReadGuard<Lsn>,
ctx: &RequestContext,
) -> Result<Lsn, PageStreamError> {
let last_record_lsn = timeline.get_last_record_lsn();
if latest {
// Latest page version was requested. If LSN is given, it is a hint
// to the page server that there have been no modifications to the
// page after that LSN. If we haven't received WAL up to that point,
// wait until it arrives.
let last_record_lsn = timeline.get_last_record_lsn();
// Sanity check the request
if request_lsn < not_modified_since {
return Err(PageStreamError::BadRequest(
format!(
"invalid request with request LSN {} and not_modified_since {}",
request_lsn, not_modified_since,
)
.into(),
));
}
if request_lsn < **latest_gc_cutoff_lsn {
// Check explicitly for INVALID just to get a less scary error message if the
// request is obviously bogus
return Err(if request_lsn == Lsn::INVALID {
PageStreamError::BadRequest("invalid LSN(0) in request".into())
// Note: this covers the special case that lsn == Lsn(0). That
// special case means "return the latest version whatever it is",
// and it's used for bootstrapping purposes, when the page server is
// connected directly to the compute node. That is needed because
// when you connect to the compute node, to receive the WAL, the
// walsender process will do a look up in the pg_authid catalog
// table for authentication. That poses a deadlock problem: the
// catalog table lookup will send a GetPage request, but the GetPage
// request will block in the page server because the recent WAL
// hasn't been received yet, and it cannot be received until the
// walsender completes the authentication and starts streaming the
// WAL.
if lsn <= last_record_lsn {
lsn = last_record_lsn;
} else {
PageStreamError::BadRequest(format!(
"tried to request a page version that was garbage collected. requested at {} gc cutoff {}",
request_lsn, **latest_gc_cutoff_lsn
).into())
});
}
// Wait for WAL up to 'not_modified_since' to arrive, if necessary
if not_modified_since > last_record_lsn {
timeline
.wait_lsn(
lsn,
crate::tenant::timeline::WaitLsnWaiter::PageService,
ctx,
)
.await?;
// Since we waited for 'lsn' to arrive, that is now the last
// record LSN. (Or close enough for our purposes; the
// last-record LSN can advance immediately after we return
// anyway)
}
} else {
if lsn == Lsn(0) {
return Err(PageStreamError::BadRequest(
"invalid LSN(0) in request".into(),
));
}
timeline
.wait_lsn(
not_modified_since,
lsn,
crate::tenant::timeline::WaitLsnWaiter::PageService,
ctx,
)
.await?;
// Since we waited for 'not_modified_since' to arrive, that is now the last
// record LSN. (Or close enough for our purposes; the last-record LSN can
// advance immediately after we return anyway)
Ok(not_modified_since)
} else {
// It might be better to use max(not_modified_since, latest_gc_cutoff_lsn)
// here instead. That would give the same result, since we know that there
// haven't been any modifications since 'not_modified_since'. Using an older
// LSN might be faster, because that could allow skipping recent layers when
// finding the page. However, we have historically used 'last_record_lsn', so
// stick to that for now.
Ok(std::cmp::min(last_record_lsn, request_lsn))
}
if lsn < **latest_gc_cutoff_lsn {
return Err(PageStreamError::BadRequest(format!(
"tried to request a page version that was garbage collected. requested at {} gc cutoff {}",
lsn, **latest_gc_cutoff_lsn
).into()));
}
Ok(lsn)
}
#[instrument(skip_all, fields(shard_id))]
@@ -922,17 +926,12 @@ impl PageServerHandler {
.start_timer(metrics::SmgrQueryType::GetRelExists, ctx);
let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
let lsn = Self::wait_or_get_last_lsn(
timeline,
req.request_lsn,
req.not_modified_since,
&latest_gc_cutoff_lsn,
ctx,
)
.await?;
let lsn =
Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
.await?;
let exists = timeline
.get_rel_exists(req.rel, Version::Lsn(lsn), ctx)
.get_rel_exists(req.rel, Version::Lsn(lsn), req.latest, ctx)
.await?;
Ok(PagestreamBeMessage::Exists(PagestreamExistsResponse {
@@ -955,17 +954,12 @@ impl PageServerHandler {
.start_timer(metrics::SmgrQueryType::GetRelSize, ctx);
let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
let lsn = Self::wait_or_get_last_lsn(
timeline,
req.request_lsn,
req.not_modified_since,
&latest_gc_cutoff_lsn,
ctx,
)
.await?;
let lsn =
Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
.await?;
let n_blocks = timeline
.get_rel_size(req.rel, Version::Lsn(lsn), ctx)
.get_rel_size(req.rel, Version::Lsn(lsn), req.latest, ctx)
.await?;
Ok(PagestreamBeMessage::Nblocks(PagestreamNblocksResponse {
@@ -988,17 +982,18 @@ impl PageServerHandler {
.start_timer(metrics::SmgrQueryType::GetDbSize, ctx);
let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
let lsn = Self::wait_or_get_last_lsn(
timeline,
req.request_lsn,
req.not_modified_since,
&latest_gc_cutoff_lsn,
ctx,
)
.await?;
let lsn =
Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
.await?;
let total_blocks = timeline
.get_db_size(DEFAULTTABLESPACE_OID, req.dbnode, Version::Lsn(lsn), ctx)
.get_db_size(
DEFAULTTABLESPACE_OID,
req.dbnode,
Version::Lsn(lsn),
req.latest,
ctx,
)
.await?;
let db_size = total_blocks as i64 * BLCKSZ as i64;
@@ -1165,17 +1160,12 @@ impl PageServerHandler {
.start_timer(metrics::SmgrQueryType::GetPageAtLsn, ctx);
let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
let lsn = Self::wait_or_get_last_lsn(
timeline,
req.request_lsn,
req.not_modified_since,
&latest_gc_cutoff_lsn,
ctx,
)
.await?;
let lsn =
Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
.await?;
let page = timeline
.get_rel_page_at_lsn(req.rel, req.blkno, Version::Lsn(lsn), ctx)
.get_rel_page_at_lsn(req.rel, req.blkno, Version::Lsn(lsn), req.latest, ctx)
.await?;
Ok(PagestreamBeMessage::GetPage(PagestreamGetPageResponse {
@@ -1198,14 +1188,9 @@ impl PageServerHandler {
.start_timer(metrics::SmgrQueryType::GetSlruSegment, ctx);
let latest_gc_cutoff_lsn = timeline.get_latest_gc_cutoff_lsn();
let lsn = Self::wait_or_get_last_lsn(
timeline,
req.request_lsn,
req.not_modified_since,
&latest_gc_cutoff_lsn,
ctx,
)
.await?;
let lsn =
Self::wait_or_get_last_lsn(timeline, req.lsn, req.latest, &latest_gc_cutoff_lsn, ctx)
.await?;
let kind = SlruKind::from_repr(req.kind)
.ok_or(PageStreamError::BadRequest("invalid SLRU kind".into()))?;
@@ -1216,10 +1201,6 @@ impl PageServerHandler {
))
}
/// Note on "fullbackup":
/// Full basebackups should only be used for debugging purposes.
/// Originally, it was introduced to enable breaking storage format changes,
/// but that is not applicable anymore.
#[allow(clippy::too_many_arguments)]
#[instrument(skip_all, fields(shard_id, ?lsn, ?prev_lsn, %full_backup))]
async fn handle_basebackup_request<IO>(
@@ -1423,34 +1404,7 @@ where
let ctx = self.connection_ctx.attached_child();
debug!("process query {query_string:?}");
if query_string.starts_with("pagestream_v2 ") {
let (_, params_raw) = query_string.split_at("pagestream_v2 ".len());
let params = params_raw.split(' ').collect::<Vec<_>>();
if params.len() != 2 {
return Err(QueryError::Other(anyhow::anyhow!(
"invalid param number for pagestream command"
)));
}
let tenant_id = TenantId::from_str(params[0])
.with_context(|| format!("Failed to parse tenant id from {}", params[0]))?;
let timeline_id = TimelineId::from_str(params[1])
.with_context(|| format!("Failed to parse timeline id from {}", params[1]))?;
tracing::Span::current()
.record("tenant_id", field::display(tenant_id))
.record("timeline_id", field::display(timeline_id));
self.check_permission(Some(tenant_id))?;
self.handle_pagerequests(
pgb,
tenant_id,
timeline_id,
PagestreamProtocolVersion::V2,
ctx,
)
.await?;
} else if query_string.starts_with("pagestream ") {
if query_string.starts_with("pagestream ") {
let (_, params_raw) = query_string.split_at("pagestream ".len());
let params = params_raw.split(' ').collect::<Vec<_>>();
if params.len() != 2 {
@@ -1469,14 +1423,8 @@ where
self.check_permission(Some(tenant_id))?;
self.handle_pagerequests(
pgb,
tenant_id,
timeline_id,
PagestreamProtocolVersion::V1,
ctx,
)
.await?;
self.handle_pagerequests(pgb, tenant_id, timeline_id, ctx)
.await?;
} else if query_string.starts_with("basebackup ") {
let (_, params_raw) = query_string.split_at("basebackup ".len());
let params = params_raw.split_whitespace().collect::<Vec<_>>();

View File

@@ -9,7 +9,6 @@
use super::tenant::{PageReconstructError, Timeline};
use crate::context::RequestContext;
use crate::keyspace::{KeySpace, KeySpaceAccum};
use crate::metrics::WAL_INGEST;
use crate::repository::*;
use crate::span::debug_assert_current_span_has_tenant_and_timeline_id_no_shard_id;
use crate::walrecord::NeonWalRecord;
@@ -176,6 +175,7 @@ impl Timeline {
tag: RelTag,
blknum: BlockNumber,
version: Version<'_>,
latest: bool,
ctx: &RequestContext,
) -> Result<Bytes, PageReconstructError> {
if tag.relnode == 0 {
@@ -184,7 +184,7 @@ impl Timeline {
));
}
let nblocks = self.get_rel_size(tag, version, ctx).await?;
let nblocks = self.get_rel_size(tag, version, latest, ctx).await?;
if blknum >= nblocks {
debug!(
"read beyond EOF at {} blk {} at {}, size is {}: returning all-zeros page",
@@ -206,6 +206,7 @@ impl Timeline {
spcnode: Oid,
dbnode: Oid,
version: Version<'_>,
latest: bool,
ctx: &RequestContext,
) -> Result<usize, PageReconstructError> {
let mut total_blocks = 0;
@@ -213,7 +214,7 @@ impl Timeline {
let rels = self.list_rels(spcnode, dbnode, version, ctx).await?;
for rel in rels {
let n_blocks = self.get_rel_size(rel, version, ctx).await?;
let n_blocks = self.get_rel_size(rel, version, latest, ctx).await?;
total_blocks += n_blocks as usize;
}
Ok(total_blocks)
@@ -224,6 +225,7 @@ impl Timeline {
&self,
tag: RelTag,
version: Version<'_>,
latest: bool,
ctx: &RequestContext,
) -> Result<BlockNumber, PageReconstructError> {
if tag.relnode == 0 {
@@ -237,7 +239,7 @@ impl Timeline {
}
if (tag.forknum == FSM_FORKNUM || tag.forknum == VISIBILITYMAP_FORKNUM)
&& !self.get_rel_exists(tag, version, ctx).await?
&& !self.get_rel_exists(tag, version, latest, ctx).await?
{
// FIXME: Postgres sometimes calls smgrcreate() to create
// FSM, and smgrnblocks() on it immediately afterwards,
@@ -250,8 +252,16 @@ impl Timeline {
let mut buf = version.get(self, key, ctx).await?;
let nblocks = buf.get_u32_le();
self.update_cached_rel_size(tag, version.get_lsn(), nblocks);
if latest {
// Update relation size cache only if "latest" flag is set.
// This flag is set by compute when it is working with most recent version of relation.
// Typically master compute node always set latest=true.
// Please notice, that even if compute node "by mistake" specifies old LSN but set
// latest=true, then it can not cause cache corruption, because with latest=true
// pageserver choose max(request_lsn, last_written_lsn) and so cached value will be
// associated with most recent value of LSN.
self.update_cached_rel_size(tag, version.get_lsn(), nblocks);
}
Ok(nblocks)
}
@@ -260,6 +270,7 @@ impl Timeline {
&self,
tag: RelTag,
version: Version<'_>,
_latest: bool,
ctx: &RequestContext,
) -> Result<bool, PageReconstructError> {
if tag.relnode == 0 {
@@ -455,12 +466,6 @@ impl Timeline {
// Didn't find any commit timestamps smaller than the request
Ok(LsnForTimestamp::Past(min_lsn))
}
(true, _) if commit_lsn < min_lsn => {
// the search above did set found_smaller to true but it never increased the lsn.
// Then, low is still the old min_lsn, and the subtraction above gave a value
// below the min_lsn. We should never do that.
Ok(LsnForTimestamp::Past(min_lsn))
}
(true, false) => {
// Only found commits with timestamps smaller than the request.
// It's still a valid case for branch creation, return it.
@@ -812,7 +817,7 @@ impl Timeline {
/// Get cached size of relation if it not updated after specified LSN
pub fn get_cached_rel_size(&self, tag: &RelTag, lsn: Lsn) -> Option<BlockNumber> {
let rel_size_cache = self.rel_size_cache.read().unwrap();
if let Some((cached_lsn, nblocks)) = rel_size_cache.map.get(tag) {
if let Some((cached_lsn, nblocks)) = rel_size_cache.get(tag) {
if lsn >= *cached_lsn {
return Some(*nblocks);
}
@@ -823,16 +828,7 @@ impl Timeline {
/// Update cached relation size if there is no more recent update
pub fn update_cached_rel_size(&self, tag: RelTag, lsn: Lsn, nblocks: BlockNumber) {
let mut rel_size_cache = self.rel_size_cache.write().unwrap();
if lsn < rel_size_cache.complete_as_of {
// Do not cache old values. It's safe to cache the size on read, as long as
// the read was at an LSN since we started the WAL ingestion. Reasoning: we
// never evict values from the cache, so if the relation size changed after
// 'lsn', the new value is already in the cache.
return;
}
match rel_size_cache.map.entry(tag) {
match rel_size_cache.entry(tag) {
hash_map::Entry::Occupied(mut entry) => {
let cached_lsn = entry.get_mut();
if lsn >= cached_lsn.0 {
@@ -848,13 +844,13 @@ impl Timeline {
/// Store cached relation size
pub fn set_cached_rel_size(&self, tag: RelTag, lsn: Lsn, nblocks: BlockNumber) {
let mut rel_size_cache = self.rel_size_cache.write().unwrap();
rel_size_cache.map.insert(tag, (lsn, nblocks));
rel_size_cache.insert(tag, (lsn, nblocks));
}
/// Remove cached relation size
pub fn remove_cached_rel_size(&self, tag: &RelTag) {
let mut rel_size_cache = self.rel_size_cache.write().unwrap();
rel_size_cache.map.remove(tag);
rel_size_cache.remove(tag);
}
}
@@ -1092,7 +1088,7 @@ impl<'a> DatadirModification<'a> {
) -> anyhow::Result<()> {
let total_blocks = self
.tline
.get_db_size(spcnode, dbnode, Version::Modified(self), ctx)
.get_db_size(spcnode, dbnode, Version::Modified(self), true, ctx)
.await?;
// Remove entry from dbdir
@@ -1191,7 +1187,7 @@ impl<'a> DatadirModification<'a> {
anyhow::ensure!(rel.relnode != 0, RelationError::InvalidRelnode);
if self
.tline
.get_rel_exists(rel, Version::Modified(self), ctx)
.get_rel_exists(rel, Version::Modified(self), true, ctx)
.await?
{
let size_key = rel_size_to_key(rel);
@@ -1405,7 +1401,7 @@ impl<'a> DatadirModification<'a> {
let n_files;
let mut aux_files = self.tline.aux_files.lock().await;
if let Some(mut dir) = aux_files.dir.take() {
// We already updated aux files in `self`: emit a delta and update our latest value.
// We already updated aux files in `self`: emit a delta and update our latest value
dir.upsert(file_path.clone(), content.clone());
n_files = dir.files.len();
if aux_files.n_deltas == MAX_AUX_FILE_DELTAS {
@@ -1450,14 +1446,10 @@ impl<'a> DatadirModification<'a> {
// reset the map.
return Err(e.into());
}
// Note: we added missing key error variant in https://github.com/neondatabase/neon/pull/7393 but
// the original code assumes all other errors are missing keys. Therefore, we keep the code path
// the same for now, though in theory, we should only match the `MissingKey` variant.
Err(
PageReconstructError::Other(_)
| PageReconstructError::WalRedo(_)
| PageReconstructError::MissingKey { .. },
) => {
// FIXME: PageReconstructError doesn't have an explicit variant for key-not-found, so
// we are assuming that all _other_ possible errors represents a missing key. If some
// other error occurs, we may incorrectly reset the map of aux files.
Err(PageReconstructError::Other(_) | PageReconstructError::WalRedo(_)) => {
// Key is missing, we must insert an image as the basis for subsequent deltas.
let mut dir = AuxFilesDirectory {
@@ -1549,8 +1541,6 @@ impl<'a> DatadirModification<'a> {
pub async fn commit(&mut self, ctx: &RequestContext) -> anyhow::Result<()> {
let mut writer = self.tline.writer().await;
let timer = WAL_INGEST.time_spent_on_ingest.start_timer();
let pending_nblocks = self.pending_nblocks;
self.pending_nblocks = 0;
@@ -1590,8 +1580,6 @@ impl<'a> DatadirModification<'a> {
writer.update_directory_entries_count(kind, count as u64);
}
timer.observe_duration();
Ok(())
}

View File

@@ -33,52 +33,6 @@ impl Value {
}
}
#[cfg(test)]
#[derive(Debug, PartialEq)]
pub(crate) enum InvalidInput {
TooShortValue,
TooShortPostgresRecord,
}
/// We could have a ValueRef where everything is `serde(borrow)`. Before implementing that, lets
/// use this type for querying if a slice looks some particular way.
#[cfg(test)]
pub(crate) struct ValueBytes;
#[cfg(test)]
impl ValueBytes {
pub(crate) fn will_init(raw: &[u8]) -> Result<bool, InvalidInput> {
if raw.len() < 12 {
return Err(InvalidInput::TooShortValue);
}
let value_discriminator = &raw[0..4];
if value_discriminator == [0, 0, 0, 0] {
// Value::Image always initializes
return Ok(true);
}
if value_discriminator != [0, 0, 0, 1] {
// not a Value::WalRecord(..)
return Ok(false);
}
let walrecord_discriminator = &raw[4..8];
if walrecord_discriminator != [0, 0, 0, 0] {
// only NeonWalRecord::Postgres can have will_init
return Ok(false);
}
if raw.len() < 17 {
return Err(InvalidInput::TooShortPostgresRecord);
}
Ok(raw[8] == 1)
}
}
#[cfg(test)]
mod test {
use super::*;
@@ -116,8 +70,6 @@ mod test {
];
roundtrip!(image, expected);
assert!(ValueBytes::will_init(&expected).unwrap());
}
#[test]
@@ -141,96 +93,6 @@ mod test {
];
roundtrip!(rec, expected);
assert!(ValueBytes::will_init(&expected).unwrap());
}
#[test]
fn bytes_inspection_too_short_image() {
let rec = Value::Image(Bytes::from_static(b""));
#[rustfmt::skip]
let expected = [
// top level discriminator of 4 bytes
0x00, 0x00, 0x00, 0x00,
// 8 byte length
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
];
roundtrip!(rec, expected);
assert!(ValueBytes::will_init(&expected).unwrap());
assert_eq!(expected.len(), 12);
for len in 0..12 {
assert_eq!(
ValueBytes::will_init(&expected[..len]).unwrap_err(),
InvalidInput::TooShortValue
);
}
}
#[test]
fn bytes_inspection_too_short_postgres_record() {
let rec = NeonWalRecord::Postgres {
will_init: false,
rec: Bytes::from_static(b""),
};
let rec = Value::WalRecord(rec);
#[rustfmt::skip]
let expected = [
// flattened discriminator of total 8 bytes
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x00,
// will_init
0x00,
// 8 byte length
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
];
roundtrip!(rec, expected);
assert!(!ValueBytes::will_init(&expected).unwrap());
assert_eq!(expected.len(), 17);
for len in 12..17 {
assert_eq!(
ValueBytes::will_init(&expected[..len]).unwrap_err(),
InvalidInput::TooShortPostgresRecord
)
}
for len in 0..12 {
assert_eq!(
ValueBytes::will_init(&expected[..len]).unwrap_err(),
InvalidInput::TooShortValue
)
}
}
#[test]
fn clear_visibility_map_flags_example() {
let rec = NeonWalRecord::ClearVisibilityMapFlags {
new_heap_blkno: Some(0x11),
old_heap_blkno: None,
flags: 0x03,
};
let rec = Value::WalRecord(rec);
#[rustfmt::skip]
let expected = [
// discriminators
0x00, 0x00, 0x00, 0x01,
0x00, 0x00, 0x00, 0x01,
// Some == 1 followed by 4 bytes
0x01, 0x00, 0x00, 0x00, 0x11,
// None == 0
0x00,
// flags
0x03
];
roundtrip!(rec, expected);
assert!(!ValueBytes::will_init(&expected).unwrap());
}
}

View File

@@ -361,8 +361,6 @@ pub enum TaskKind {
DebugTool,
EphemeralFilePreWarmPageCache,
#[cfg(test)]
UnitTest,
}

View File

@@ -386,7 +386,7 @@ impl WalRedoManager {
pub(crate) fn status(&self) -> Option<WalRedoManagerStatus> {
match self {
WalRedoManager::Prod(m) => Some(m.status()),
WalRedoManager::Prod(m) => m.status(),
#[cfg(test)]
WalRedoManager::Test(_) => None,
}
@@ -559,10 +559,9 @@ impl Tenant {
// By doing what we do here, the index part upload is retried.
// If control plane retries timeline creation in the meantime, the mgmt API handler
// for timeline creation will coalesce on the upload we queue here.
// FIXME: this branch should be dead code as we no longer write local metadata.
let rtc = timeline.remote_client.as_ref().unwrap();
rtc.init_upload_queue_for_empty_remote(&metadata)?;
rtc.schedule_index_upload_for_full_metadata_update(&metadata)?;
rtc.schedule_index_upload_for_metadata_update(&metadata)?;
}
timeline
@@ -888,7 +887,7 @@ impl Tenant {
#[instrument(skip_all)]
pub(crate) async fn preload(
self: &Arc<Self>,
self: &Arc<Tenant>,
remote_storage: &GenericRemoteStorage,
cancel: CancellationToken,
) -> anyhow::Result<TenantPreload> {
@@ -918,13 +917,9 @@ impl Tenant {
Ok(TenantPreload {
deleting,
timelines: Self::load_timeline_metadata(
self,
remote_timeline_ids,
remote_storage,
cancel,
)
.await?,
timelines: self
.load_timeline_metadata(remote_timeline_ids, remote_storage, cancel)
.await?,
})
}
@@ -2874,23 +2869,20 @@ impl Tenant {
}
}
let cutoff = timeline
.get_last_record_lsn()
.checked_sub(horizon)
.unwrap_or(Lsn(0));
if let Some(cutoff) = timeline.get_last_record_lsn().checked_sub(horizon) {
let branchpoints: Vec<Lsn> = all_branchpoints
.range((
Included((timeline_id, Lsn(0))),
Included((timeline_id, Lsn(u64::MAX))),
))
.map(|&x| x.1)
.collect();
timeline
.update_gc_info(branchpoints, cutoff, pitr, cancel, ctx)
.await?;
let branchpoints: Vec<Lsn> = all_branchpoints
.range((
Included((timeline_id, Lsn(0))),
Included((timeline_id, Lsn(u64::MAX))),
))
.map(|&x| x.1)
.collect();
timeline
.update_gc_info(branchpoints, cutoff, pitr, cancel, ctx)
.await?;
gc_timelines.push(timeline);
gc_timelines.push(timeline);
}
}
drop(gc_cs);
Ok(gc_timelines)
@@ -3035,7 +3027,7 @@ impl Tenant {
// See also https://github.com/neondatabase/neon/issues/3865
if let Some(remote_client) = new_timeline.remote_client.as_ref() {
remote_client
.schedule_index_upload_for_full_metadata_update(&metadata)
.schedule_index_upload_for_metadata_update(&metadata)
.context("branch initial metadata upload")?;
}
@@ -3198,7 +3190,7 @@ impl Tenant {
run_initdb(self.conf, &pgdata_path, pg_version, &self.cancel).await?;
// Upload the created data dir to S3
if self.tenant_shard_id().is_shard_zero() {
if self.tenant_shard_id().is_zero() {
self.upload_initdb(&timelines_path, &pgdata_path, &timeline_id)
.await?;
}
@@ -3406,11 +3398,7 @@ impl Tenant {
// is in progress (which is not a common case).
//
// See more for on the issue #2748 condenced out of the initial PR review.
let mut shared_cache = tokio::select! {
locked = self.cached_logical_sizes.lock() => locked,
_ = cancel.cancelled() => anyhow::bail!("cancelled"),
_ = self.cancel.cancelled() => anyhow::bail!("tenant is shutting down"),
};
let mut shared_cache = self.cached_logical_sizes.lock().await;
size::gather_inputs(
self,
@@ -3449,7 +3437,7 @@ impl Tenant {
.store(size, Ordering::Relaxed);
// Only shard zero should be calculating synthetic sizes
debug_assert!(self.shard_identity.is_shard_zero());
debug_assert!(self.shard_identity.is_zero());
TENANT_SYNTHETIC_SIZE_METRIC
.get_metric_with_label_values(&[&self.tenant_shard_id.tenant_id.to_string()])
@@ -3672,7 +3660,6 @@ pub(crate) mod harness {
image_layer_creation_check_threshold: Some(
tenant_conf.image_layer_creation_check_threshold,
),
switch_to_aux_file_v2: Some(tenant_conf.switch_to_aux_file_v2),
}
}
}
@@ -3861,8 +3848,6 @@ pub(crate) mod harness {
#[cfg(test)]
mod tests {
use std::collections::BTreeMap;
use super::*;
use crate::keyspace::KeySpaceAccum;
use crate::repository::{Key, Value};
@@ -3871,11 +3856,9 @@ mod tests {
use crate::DEFAULT_PG_VERSION;
use bytes::BytesMut;
use hex_literal::hex;
use pageserver_api::key::NON_INHERITED_RANGE;
use pageserver_api::keyspace::KeySpace;
use rand::{thread_rng, Rng};
use tests::storage_layer::ValuesReconstructState;
use tests::timeline::{GetVectoredError, ShutdownMode};
use tests::timeline::ShutdownMode;
static TEST_KEY: Lazy<Key> =
Lazy::new(|| Key::from_slice(&hex!("010000000033333333444444445500000001")));
@@ -4663,9 +4646,7 @@ mod tests {
for read in reads {
info!("Doing vectored read on {:?}", read);
let vectored_res = tline
.get_vectored_impl(read.clone(), reads_lsn, ValuesReconstructState::new(), &ctx)
.await;
let vectored_res = tline.get_vectored_impl(read.clone(), reads_lsn, &ctx).await;
tline
.validate_get_vectored_impl(&vectored_res, read, reads_lsn, &ctx)
.await;
@@ -4674,67 +4655,6 @@ mod tests {
Ok(())
}
#[tokio::test]
async fn test_get_vectored_aux_files() -> anyhow::Result<()> {
let harness = TenantHarness::create("test_get_vectored_aux_files")?;
let (tenant, ctx) = harness.load().await;
let tline = tenant
.create_empty_timeline(TIMELINE_ID, Lsn(0), DEFAULT_PG_VERSION, &ctx)
.await?;
let tline = tline.raw_timeline().unwrap();
let mut modification = tline.begin_modification(Lsn(0x1000));
modification.put_file("foo/bar1", b"content1", &ctx).await?;
modification.set_lsn(Lsn(0x1008))?;
modification.put_file("foo/bar2", b"content2", &ctx).await?;
modification.commit(&ctx).await?;
let child_timeline_id = TimelineId::generate();
tenant
.branch_timeline_test(
tline,
child_timeline_id,
Some(tline.get_last_record_lsn()),
&ctx,
)
.await?;
let child_timeline = tenant
.get_timeline(child_timeline_id, true)
.expect("Should have the branched timeline");
let aux_keyspace = KeySpace {
ranges: vec![NON_INHERITED_RANGE],
};
let read_lsn = child_timeline.get_last_record_lsn();
let vectored_res = child_timeline
.get_vectored_impl(
aux_keyspace.clone(),
read_lsn,
ValuesReconstructState::new(),
&ctx,
)
.await;
child_timeline
.validate_get_vectored_impl(&vectored_res, aux_keyspace, read_lsn, &ctx)
.await;
let images = vectored_res?;
let mut key = NON_INHERITED_RANGE.start;
while key < NON_INHERITED_RANGE.end {
assert!(matches!(
images[&key],
Err(PageReconstructError::MissingKey(_))
));
key = key.next();
}
Ok(())
}
// Test that vectored get handles layer gaps correctly
// by advancing into the next ancestor timeline if required.
//
@@ -4863,12 +4783,7 @@ mod tests {
ranges: vec![key_near_gap..gap_at_key.next(), key_near_end..current_key],
};
let results = child_timeline
.get_vectored_impl(
read.clone(),
current_lsn,
ValuesReconstructState::new(),
&ctx,
)
.get_vectored_impl(read.clone(), current_lsn, &ctx)
.await?;
for (key, img_res) in results {
@@ -4879,167 +4794,6 @@ mod tests {
Ok(())
}
// Test that vectored get descends into ancestor timelines correctly and
// does not return an image that's newer than requested.
//
// The diagram below ilustrates an interesting case. We have a parent timeline
// (top of the Lsn range) and a child timeline. The request key cannot be reconstructed
// from the child timeline, so the parent timeline must be visited. When advacing into
// the child timeline, the read path needs to remember what the requested Lsn was in
// order to avoid returning an image that's too new. The test below constructs such
// a timeline setup and does a few queries around the Lsn of each page image.
// ```
// LSN
// ^
// |
// |
// 500 | --------------------------------------> branch point
// 400 | X
// 300 | X
// 200 | --------------------------------------> requested lsn
// 100 | X
// |---------------------------------------> Key
// |
// ------> requested key
//
// Legend:
// * X - page images
// ```
#[tokio::test]
async fn test_get_vectored_ancestor_descent() -> anyhow::Result<()> {
let harness = TenantHarness::create("test_get_vectored_on_lsn_axis")?;
let (tenant, ctx) = harness.load().await;
let start_key = Key::from_hex("010000000033333333444444445500000000").unwrap();
let end_key = start_key.add(1000);
let child_gap_at_key = start_key.add(500);
let mut parent_gap_lsns: BTreeMap<Lsn, String> = BTreeMap::new();
let mut current_lsn = Lsn(0x10);
let timeline_id = TimelineId::generate();
let parent_timeline = tenant
.create_test_timeline(timeline_id, current_lsn, DEFAULT_PG_VERSION, &ctx)
.await?;
current_lsn += 0x100;
for _ in 0..3 {
let mut key = start_key;
while key < end_key {
current_lsn += 0x10;
let image_value = format!("{} at {}", child_gap_at_key, current_lsn);
let mut writer = parent_timeline.writer().await;
writer
.put(
key,
current_lsn,
&Value::Image(test_img(&image_value)),
&ctx,
)
.await?;
writer.finish_write(current_lsn);
if key == child_gap_at_key {
parent_gap_lsns.insert(current_lsn, image_value);
}
key = key.next();
}
parent_timeline.freeze_and_flush().await?;
}
let child_timeline_id = TimelineId::generate();
let child_timeline = tenant
.branch_timeline_test(&parent_timeline, child_timeline_id, Some(current_lsn), &ctx)
.await?;
let mut key = start_key;
while key < end_key {
if key == child_gap_at_key {
key = key.next();
continue;
}
current_lsn += 0x10;
let mut writer = child_timeline.writer().await;
writer
.put(
key,
current_lsn,
&Value::Image(test_img(&format!("{} at {}", key, current_lsn))),
&ctx,
)
.await?;
writer.finish_write(current_lsn);
key = key.next();
}
child_timeline.freeze_and_flush().await?;
let lsn_offsets: [i64; 5] = [-10, -1, 0, 1, 10];
let mut query_lsns = Vec::new();
for image_lsn in parent_gap_lsns.keys().rev() {
for offset in lsn_offsets {
query_lsns.push(Lsn(image_lsn
.0
.checked_add_signed(offset)
.expect("Shouldn't overflow")));
}
}
for query_lsn in query_lsns {
let results = child_timeline
.get_vectored_impl(
KeySpace {
ranges: vec![child_gap_at_key..child_gap_at_key.next()],
},
query_lsn,
ValuesReconstructState::new(),
&ctx,
)
.await;
let expected_item = parent_gap_lsns
.iter()
.rev()
.find(|(lsn, _)| **lsn <= query_lsn);
info!(
"Doing vectored read at LSN {}. Expecting image to be: {:?}",
query_lsn, expected_item
);
match expected_item {
Some((_, img_value)) => {
let key_results = results.expect("No vectored get error expected");
let key_result = &key_results[&child_gap_at_key];
let returned_img = key_result
.as_ref()
.expect("No page reconstruct error expected");
info!(
"Vectored read at LSN {} returned image {}",
query_lsn,
std::str::from_utf8(returned_img)?
);
assert_eq!(*returned_img, test_img(img_value));
}
None => {
assert!(matches!(results, Err(GetVectoredError::MissingKey(_))));
}
}
}
Ok(())
}
#[tokio::test]
async fn test_random_updates() -> anyhow::Result<()> {
let harness = TenantHarness::create("test_random_updates")?;

View File

@@ -121,7 +121,7 @@ impl<const BUFFERED: bool> BlobWriter<BUFFERED> {
self.offset
}
const CAPACITY: usize = if BUFFERED { 64 * 1024 } else { 0 };
const CAPACITY: usize = if BUFFERED { PAGE_SZ } else { 0 };
/// Writes the given buffer directly to the underlying `VirtualFile`.
/// You need to make sure that the internal buffer is empty, otherwise

View File

@@ -369,10 +369,6 @@ pub struct TenantConf {
// How much WAL must be ingested before checking again whether a new image layer is required.
// Expresed in multiples of checkpoint distance.
pub image_layer_creation_check_threshold: u8,
/// Switch to aux file v2. Switching this flag requires the user has not written any aux file into
/// the storage before, and this flag cannot be switched back. Otherwise there will be data corruptions.
pub switch_to_aux_file_v2: bool,
}
/// Same as TenantConf, but this struct preserves the information about
@@ -468,10 +464,6 @@ pub struct TenantConfOpt {
#[serde(skip_serializing_if = "Option::is_none")]
pub image_layer_creation_check_threshold: Option<u8>,
#[serde(skip_serializing_if = "Option::is_none")]
#[serde(default)]
pub switch_to_aux_file_v2: Option<bool>,
}
impl TenantConfOpt {
@@ -529,9 +521,6 @@ impl TenantConfOpt {
image_layer_creation_check_threshold: self
.image_layer_creation_check_threshold
.unwrap_or(global_conf.image_layer_creation_check_threshold),
switch_to_aux_file_v2: self
.switch_to_aux_file_v2
.unwrap_or(global_conf.switch_to_aux_file_v2),
}
}
}
@@ -573,7 +562,6 @@ impl Default for TenantConf {
lazy_slru_download: false,
timeline_get_throttle: crate::tenant::throttle::Config::disabled(),
image_layer_creation_check_threshold: DEFAULT_IMAGE_LAYER_CREATION_CHECK_THRESHOLD,
switch_to_aux_file_v2: false,
}
}
}
@@ -648,7 +636,6 @@ impl From<TenantConfOpt> for models::TenantConfig {
lazy_slru_download: value.lazy_slru_download,
timeline_get_throttle: value.timeline_get_throttle.map(ThrottleConfig::from),
image_layer_creation_check_threshold: value.image_layer_creation_check_threshold,
switch_to_aux_file_v2: value.switch_to_aux_file_v2,
}
}
}

View File

@@ -436,11 +436,6 @@ impl DeleteTenantFlow {
.await
}
/// Check whether background deletion of this tenant is currently in progress
pub(crate) fn is_in_progress(tenant: &Tenant) -> bool {
tenant.delete_progress.try_lock().is_err()
}
async fn prepare(
tenant: &Arc<Tenant>,
) -> Result<tokio::sync::OwnedMutexGuard<Self>, DeleteTenantError> {

View File

@@ -3,26 +3,36 @@
use crate::config::PageServerConf;
use crate::context::RequestContext;
use crate::page_cache;
use crate::page_cache::{self, PAGE_SZ};
use crate::tenant::block_io::{BlockCursor, BlockLease, BlockReader};
use crate::virtual_file::{self, VirtualFile};
use bytes::BytesMut;
use camino::Utf8PathBuf;
use pageserver_api::shard::TenantShardId;
use std::cmp::min;
use std::io;
use std::io::{self, ErrorKind};
use std::ops::DerefMut;
use std::sync::atomic::AtomicU64;
use tracing::*;
use utils::id::TimelineId;
pub struct EphemeralFile {
page_cache_file_id: page_cache::FileId,
_tenant_shard_id: TenantShardId,
_timeline_id: TimelineId,
rw: page_caching::RW,
file: VirtualFile,
len: u64,
/// An ephemeral file is append-only.
/// We keep the last page, which can still be modified, in [`Self::mutable_tail`].
/// The other pages, which can no longer be modified, are accessed through the page cache.
///
/// None <=> IO is ongoing.
/// Size is fixed to PAGE_SZ at creation time and must not be changed.
mutable_tail: Option<BytesMut>,
}
mod page_caching;
mod zero_padded_read_write;
impl EphemeralFile {
pub async fn create(
conf: &PageServerConf,
@@ -49,18 +59,21 @@ impl EphemeralFile {
.await?;
Ok(EphemeralFile {
page_cache_file_id: page_cache::next_file_id(),
_tenant_shard_id: tenant_shard_id,
_timeline_id: timeline_id,
rw: page_caching::RW::new(file),
file,
len: 0,
mutable_tail: Some(BytesMut::zeroed(PAGE_SZ)),
})
}
pub(crate) fn len(&self) -> u64 {
self.rw.bytes_written()
self.len
}
pub(crate) fn page_cache_file_id(&self) -> page_cache::FileId {
self.rw.page_cache_file_id()
pub(crate) fn id(&self) -> page_cache::FileId {
self.page_cache_file_id
}
pub(crate) async fn read_blk(
@@ -68,30 +81,182 @@ impl EphemeralFile {
blknum: u32,
ctx: &RequestContext,
) -> Result<BlockLease, io::Error> {
self.rw.read_blk(blknum, ctx).await
let flushed_blknums = 0..self.len / PAGE_SZ as u64;
if flushed_blknums.contains(&(blknum as u64)) {
let cache = page_cache::get();
match cache
.read_immutable_buf(self.page_cache_file_id, blknum, ctx)
.await
.map_err(|e| {
std::io::Error::new(
std::io::ErrorKind::Other,
// order path before error because error is anyhow::Error => might have many contexts
format!(
"ephemeral file: read immutable page #{}: {}: {:#}",
blknum, self.file.path, e,
),
)
})? {
page_cache::ReadBufResult::Found(guard) => {
return Ok(BlockLease::PageReadGuard(guard))
}
page_cache::ReadBufResult::NotFound(write_guard) => {
let write_guard = self
.file
.read_exact_at_page(write_guard, blknum as u64 * PAGE_SZ as u64)
.await?;
let read_guard = write_guard.mark_valid();
return Ok(BlockLease::PageReadGuard(read_guard));
}
};
} else {
debug_assert_eq!(blknum as u64, self.len / PAGE_SZ as u64);
Ok(BlockLease::EphemeralFileMutableTail(
self.mutable_tail
.as_deref()
.expect("we're not doing IO, it must be Some()")
.try_into()
.expect("we ensure that it's always PAGE_SZ"),
))
}
}
pub(crate) async fn write_blob(
&mut self,
srcbuf: &[u8],
_ctx: &RequestContext,
ctx: &RequestContext,
) -> Result<u64, io::Error> {
let pos = self.rw.bytes_written();
struct Writer<'a> {
ephemeral_file: &'a mut EphemeralFile,
/// The block to which the next [`push_bytes`] will write.
blknum: u32,
/// The offset inside the block identified by [`blknum`] to which [`push_bytes`] will write.
off: usize,
}
impl<'a> Writer<'a> {
fn new(ephemeral_file: &'a mut EphemeralFile) -> io::Result<Writer<'a>> {
Ok(Writer {
blknum: (ephemeral_file.len / PAGE_SZ as u64) as u32,
off: (ephemeral_file.len % PAGE_SZ as u64) as usize,
ephemeral_file,
})
}
#[inline(always)]
async fn push_bytes(
&mut self,
src: &[u8],
ctx: &RequestContext,
) -> Result<(), io::Error> {
let mut src_remaining = src;
while !src_remaining.is_empty() {
let dst_remaining = &mut self
.ephemeral_file
.mutable_tail
.as_deref_mut()
.expect("IO is not yet ongoing")[self.off..];
let n = min(dst_remaining.len(), src_remaining.len());
dst_remaining[..n].copy_from_slice(&src_remaining[..n]);
self.off += n;
src_remaining = &src_remaining[n..];
if self.off == PAGE_SZ {
let mutable_tail = std::mem::take(&mut self.ephemeral_file.mutable_tail)
.expect("IO is not yet ongoing");
let (mutable_tail, res) = self
.ephemeral_file
.file
.write_all_at(mutable_tail, self.blknum as u64 * PAGE_SZ as u64)
.await;
// TODO: If we panic before we can put the mutable_tail back, subsequent calls will fail.
// I.e., the IO isn't retryable if we panic.
self.ephemeral_file.mutable_tail = Some(mutable_tail);
match res {
Ok(_) => {
// Pre-warm the page cache with what we just wrote.
// This isn't necessary for coherency/correctness, but it's how we've always done it.
let cache = page_cache::get();
match cache
.read_immutable_buf(
self.ephemeral_file.page_cache_file_id,
self.blknum,
ctx,
)
.await
{
Ok(page_cache::ReadBufResult::Found(_guard)) => {
// This function takes &mut self, so, it shouldn't be possible to reach this point.
unreachable!("we just wrote blknum {} and this function takes &mut self, so, no concurrent read_blk is possible", self.blknum);
}
Ok(page_cache::ReadBufResult::NotFound(mut write_guard)) => {
let buf: &mut [u8] = write_guard.deref_mut();
debug_assert_eq!(buf.len(), PAGE_SZ);
buf.copy_from_slice(
self.ephemeral_file
.mutable_tail
.as_deref()
.expect("IO is not ongoing"),
);
let _ = write_guard.mark_valid();
// pre-warm successful
}
Err(e) => {
error!("ephemeral_file write_blob failed to get immutable buf to pre-warm page cache: {e:?}");
// fail gracefully, it's not the end of the world if we can't pre-warm the cache here
}
}
// Zero the buffer for re-use.
// Zeroing is critical for correcntess because the write_blob code below
// and similarly read_blk expect zeroed pages.
self.ephemeral_file
.mutable_tail
.as_deref_mut()
.expect("IO is not ongoing")
.fill(0);
// This block is done, move to next one.
self.blknum += 1;
self.off = 0;
}
Err(e) => {
return Err(std::io::Error::new(
ErrorKind::Other,
// order error before path because path is long and error is short
format!(
"ephemeral_file: write_blob: write-back full tail blk #{}: {:#}: {}",
self.blknum,
e,
self.ephemeral_file.file.path,
),
));
}
}
}
}
Ok(())
}
}
let pos = self.len;
let mut writer = Writer::new(self)?;
// Write the length field
if srcbuf.len() < 0x80 {
// short one-byte length header
let len_buf = [srcbuf.len() as u8];
self.rw.write_all_borrowed(&len_buf).await?;
writer.push_bytes(&len_buf, ctx).await?;
} else {
let mut len_buf = u32::to_be_bytes(srcbuf.len() as u32);
len_buf[0] |= 0x80;
self.rw.write_all_borrowed(&len_buf).await?;
writer.push_bytes(&len_buf, ctx).await?;
}
// Write the payload
self.rw.write_all_borrowed(srcbuf).await?;
writer.push_bytes(srcbuf, ctx).await?;
if srcbuf.len() < 0x80 {
self.len += 1;
} else {
self.len += 4;
}
self.len += srcbuf.len() as u64;
Ok(pos)
}
@@ -106,6 +271,28 @@ pub fn is_ephemeral_file(filename: &str) -> bool {
}
}
impl Drop for EphemeralFile {
fn drop(&mut self) {
// There might still be pages in the [`crate::page_cache`] for this file.
// We leave them there, [`crate::page_cache::PageCache::find_victim`] will evict them when needed.
// unlink the file
let res = std::fs::remove_file(&self.file.path);
if let Err(e) = res {
if e.kind() != std::io::ErrorKind::NotFound {
// just never log the not found errors, we cannot do anything for them; on detach
// the tenant directory is already gone.
//
// not found files might also be related to https://github.com/neondatabase/neon/issues/2442
error!(
"could not remove ephemeral file '{}': {}",
self.file.path, e
);
}
}
}
}
impl BlockReader for EphemeralFile {
fn block_cursor(&self) -> super::block_io::BlockCursor<'_> {
BlockCursor::new(super::block_io::BlockReaderRef::EphemeralFile(self))

View File

@@ -1,218 +0,0 @@
//! Wrapper around [`super::zero_padded_read_write::RW`] that uses the
//! [`crate::page_cache`] to serve reads that need to go to the underlying [`VirtualFile`].
use crate::context::RequestContext;
use crate::page_cache::{self, PAGE_SZ};
use crate::tenant::block_io::BlockLease;
use crate::virtual_file::VirtualFile;
use once_cell::sync::Lazy;
use std::io::{self, ErrorKind};
use tokio_epoll_uring::BoundedBuf;
use tracing::*;
use super::zero_padded_read_write;
/// See module-level comment.
pub struct RW {
page_cache_file_id: page_cache::FileId,
rw: super::zero_padded_read_write::RW<PreWarmingWriter>,
}
impl RW {
pub fn new(file: VirtualFile) -> Self {
let page_cache_file_id = page_cache::next_file_id();
Self {
page_cache_file_id,
rw: super::zero_padded_read_write::RW::new(PreWarmingWriter::new(
page_cache_file_id,
file,
)),
}
}
pub fn page_cache_file_id(&self) -> page_cache::FileId {
self.page_cache_file_id
}
pub(crate) async fn write_all_borrowed(&mut self, srcbuf: &[u8]) -> Result<usize, io::Error> {
// It doesn't make sense to proactively fill the page cache on the Pageserver write path
// because Compute is unlikely to access recently written data.
self.rw.write_all_borrowed(srcbuf).await
}
pub(crate) fn bytes_written(&self) -> u64 {
self.rw.bytes_written()
}
pub(crate) async fn read_blk(
&self,
blknum: u32,
ctx: &RequestContext,
) -> Result<BlockLease, io::Error> {
match self.rw.read_blk(blknum).await? {
zero_padded_read_write::ReadResult::NeedsReadFromWriter { writer } => {
let cache = page_cache::get();
match cache
.read_immutable_buf(self.page_cache_file_id, blknum, ctx)
.await
.map_err(|e| {
std::io::Error::new(
std::io::ErrorKind::Other,
// order path before error because error is anyhow::Error => might have many contexts
format!(
"ephemeral file: read immutable page #{}: {}: {:#}",
blknum,
self.rw.as_writer().file.path,
e,
),
)
})? {
page_cache::ReadBufResult::Found(guard) => {
return Ok(BlockLease::PageReadGuard(guard))
}
page_cache::ReadBufResult::NotFound(write_guard) => {
let write_guard = writer
.file
.read_exact_at_page(write_guard, blknum as u64 * PAGE_SZ as u64)
.await?;
let read_guard = write_guard.mark_valid();
return Ok(BlockLease::PageReadGuard(read_guard));
}
}
}
zero_padded_read_write::ReadResult::ServedFromZeroPaddedMutableTail { buffer } => {
Ok(BlockLease::EphemeralFileMutableTail(buffer))
}
}
}
}
impl Drop for RW {
fn drop(&mut self) {
// There might still be pages in the [`crate::page_cache`] for this file.
// We leave them there, [`crate::page_cache::PageCache::find_victim`] will evict them when needed.
// unlink the file
let res = std::fs::remove_file(&self.rw.as_writer().file.path);
if let Err(e) = res {
if e.kind() != std::io::ErrorKind::NotFound {
// just never log the not found errors, we cannot do anything for them; on detach
// the tenant directory is already gone.
//
// not found files might also be related to https://github.com/neondatabase/neon/issues/2442
error!(
"could not remove ephemeral file '{}': {}",
self.rw.as_writer().file.path,
e
);
}
}
}
}
struct PreWarmingWriter {
nwritten_blocks: u32,
page_cache_file_id: page_cache::FileId,
file: VirtualFile,
}
impl PreWarmingWriter {
fn new(page_cache_file_id: page_cache::FileId, file: VirtualFile) -> Self {
Self {
nwritten_blocks: 0,
page_cache_file_id,
file,
}
}
}
impl crate::virtual_file::owned_buffers_io::write::OwnedAsyncWriter for PreWarmingWriter {
async fn write_all<
B: tokio_epoll_uring::BoundedBuf<Buf = Buf>,
Buf: tokio_epoll_uring::IoBuf + Send,
>(
&mut self,
buf: B,
) -> std::io::Result<(usize, B::Buf)> {
let buf = buf.slice(..);
let saved_bounds = buf.bounds(); // save for reconstructing the Slice from iobuf after the IO is done
let check_bounds_stuff_works = if cfg!(test) && cfg!(debug_assertions) {
Some(buf.to_vec())
} else {
None
};
let buflen = buf.len();
assert_eq!(
buflen % PAGE_SZ,
0,
"{buflen} ; we know TAIL_SZ is a PAGE_SZ multiple, and write_buffered_borrowed is used"
);
// Do the IO.
let iobuf = match self.file.write_all(buf).await {
(iobuf, Ok(nwritten)) => {
assert_eq!(nwritten, buflen);
iobuf
}
(_, Err(e)) => {
return Err(std::io::Error::new(
ErrorKind::Other,
// order error before path because path is long and error is short
format!(
"ephemeral_file: write_blob: write-back tail self.nwritten_blocks={}, buflen={}, {:#}: {}",
self.nwritten_blocks, buflen, e, self.file.path,
),
));
}
};
// Reconstruct the Slice (the write path consumed the Slice and returned us the underlying IoBuf)
let buf = tokio_epoll_uring::Slice::from_buf_bounds(iobuf, saved_bounds);
if let Some(check_bounds_stuff_works) = check_bounds_stuff_works {
assert_eq!(&check_bounds_stuff_works, &*buf);
}
// Pre-warm page cache with the contents.
// At least in isolated bulk ingest benchmarks (test_bulk_insert.py), the pre-warming
// benefits the code that writes InMemoryLayer=>L0 layers.
let nblocks = buflen / PAGE_SZ;
let nblocks32 = u32::try_from(nblocks).unwrap();
let cache = page_cache::get();
static CTX: Lazy<RequestContext> = Lazy::new(|| {
RequestContext::new(
crate::task_mgr::TaskKind::EphemeralFilePreWarmPageCache,
crate::context::DownloadBehavior::Error,
)
});
for blknum_in_buffer in 0..nblocks {
let blk_in_buffer = &buf[blknum_in_buffer * PAGE_SZ..(blknum_in_buffer + 1) * PAGE_SZ];
let blknum = self
.nwritten_blocks
.checked_add(blknum_in_buffer as u32)
.unwrap();
match cache
.read_immutable_buf(self.page_cache_file_id, blknum, &CTX)
.await
{
Err(e) => {
error!("ephemeral_file write_blob failed to get immutable buf to pre-warm page cache: {e:?}");
// fail gracefully, it's not the end of the world if we can't pre-warm the cache here
}
Ok(v) => match v {
page_cache::ReadBufResult::Found(_guard) => {
// This function takes &mut self, so, it shouldn't be possible to reach this point.
unreachable!("we just wrote block {blknum} to the VirtualFile, which is owned by Self, \
and this function takes &mut self, so, no concurrent read_blk is possible");
}
page_cache::ReadBufResult::NotFound(mut write_guard) => {
write_guard.copy_from_slice(blk_in_buffer);
let _ = write_guard.mark_valid();
}
},
}
}
self.nwritten_blocks = self.nwritten_blocks.checked_add(nblocks32).unwrap();
Ok((buflen, buf.into_inner()))
}
}

View File

@@ -1,125 +0,0 @@
//! The heart of how [`super::EphemeralFile`] does its reads and writes.
//!
//! # Writes
//!
//! [`super::EphemeralFile`] writes small, borrowed buffers using [`RW::write_all_borrowed`].
//! The [`RW`] batches these into [`TAIL_SZ`] bigger writes, using [`owned_buffers_io::write::BufferedWriter`].
//!
//! # Reads
//!
//! [`super::EphemeralFile`] always reads full [`PAGE_SZ`]ed blocks using [`RW::read_blk`].
//!
//! The [`RW`] serves these reads either from the buffered writer's in-memory buffer
//! or redirects the caller to read from the underlying [`OwnedAsyncWriter`]
//! if the read is for the prefix that has already been flushed.
//!
//! # Current Usage
//!
//! The current user of this module is [`super::page_caching::RW`].
mod zero_padded;
use crate::{
page_cache::PAGE_SZ,
virtual_file::owned_buffers_io::{
self,
write::{Buffer, OwnedAsyncWriter},
},
};
const TAIL_SZ: usize = 64 * 1024;
/// See module-level comment.
pub struct RW<W: OwnedAsyncWriter> {
buffered_writer: owned_buffers_io::write::BufferedWriter<
zero_padded::Buffer<TAIL_SZ>,
owned_buffers_io::util::size_tracking_writer::Writer<W>,
>,
}
pub enum ReadResult<'a, W> {
NeedsReadFromWriter { writer: &'a W },
ServedFromZeroPaddedMutableTail { buffer: &'a [u8; PAGE_SZ] },
}
impl<W> RW<W>
where
W: OwnedAsyncWriter,
{
pub fn new(writer: W) -> Self {
let bytes_flushed_tracker =
owned_buffers_io::util::size_tracking_writer::Writer::new(writer);
let buffered_writer = owned_buffers_io::write::BufferedWriter::new(
bytes_flushed_tracker,
zero_padded::Buffer::default(),
);
Self { buffered_writer }
}
pub(crate) fn as_writer(&self) -> &W {
self.buffered_writer.as_inner().as_inner()
}
pub async fn write_all_borrowed(&mut self, buf: &[u8]) -> std::io::Result<usize> {
self.buffered_writer.write_buffered_borrowed(buf).await
}
pub fn bytes_written(&self) -> u64 {
let flushed_offset = self.buffered_writer.as_inner().bytes_written();
let buffer: &zero_padded::Buffer<TAIL_SZ> = self.buffered_writer.inspect_buffer();
flushed_offset + u64::try_from(buffer.pending()).unwrap()
}
pub(crate) async fn read_blk(&self, blknum: u32) -> Result<ReadResult<'_, W>, std::io::Error> {
let flushed_offset = self.buffered_writer.as_inner().bytes_written();
let buffer: &zero_padded::Buffer<TAIL_SZ> = self.buffered_writer.inspect_buffer();
let buffered_offset = flushed_offset + u64::try_from(buffer.pending()).unwrap();
let read_offset = (blknum as u64) * (PAGE_SZ as u64);
// The trailing page ("block") might only be partially filled,
// yet the blob_io code relies on us to return a full PAGE_SZed slice anyway.
// Moreover, it has to be zero-padded, because when we still had
// a write-back page cache, it provided pre-zeroed pages, and blob_io came to rely on it.
// DeltaLayer probably has the same issue, not sure why it needs no special treatment.
// => check here that the read doesn't go beyond this potentially trailing
// => the zero-padding is done in the `else` branch below
let blocks_written = if buffered_offset % (PAGE_SZ as u64) == 0 {
buffered_offset / (PAGE_SZ as u64)
} else {
(buffered_offset / (PAGE_SZ as u64)) + 1
};
if (blknum as u64) >= blocks_written {
return Err(std::io::Error::new(std::io::ErrorKind::Other, anyhow::anyhow!("read past end of ephemeral_file: read=0x{read_offset:x} buffered=0x{buffered_offset:x} flushed=0x{flushed_offset}")));
}
// assertions for the `if-else` below
assert_eq!(
flushed_offset % (TAIL_SZ as u64), 0,
"we only use write_buffered_borrowed to write to the buffered writer, so it's guaranteed that flushes happen buffer.cap()-sized chunks"
);
assert_eq!(
flushed_offset % (PAGE_SZ as u64),
0,
"the logic below can't handle if the page is spread across the flushed part and the buffer"
);
if read_offset < flushed_offset {
assert!(read_offset + (PAGE_SZ as u64) <= flushed_offset);
Ok(ReadResult::NeedsReadFromWriter {
writer: self.as_writer(),
})
} else {
let read_offset_in_buffer = read_offset
.checked_sub(flushed_offset)
.expect("would have taken `if` branch instead of this one");
let read_offset_in_buffer = usize::try_from(read_offset_in_buffer).unwrap();
let zero_padded_slice = buffer.as_zero_padded_slice();
let page = &zero_padded_slice[read_offset_in_buffer..(read_offset_in_buffer + PAGE_SZ)];
Ok(ReadResult::ServedFromZeroPaddedMutableTail {
buffer: page
.try_into()
.expect("the slice above got it as page-size slice"),
})
}
}
}

View File

@@ -1,108 +0,0 @@
//! A [`crate::virtual_file::owned_buffers_io::write::Buffer`] whose
//! unwritten range is guaranteed to be zero-initialized.
//! This is used by [`crate::tenant::ephemeral_file::zero_padded_read_write::RW::read_blk`]
//! to serve page-sized reads of the trailing page when the trailing page has only been partially filled.
use std::mem::MaybeUninit;
/// See module-level comment.
pub struct Buffer<const N: usize> {
allocation: Box<[u8; N]>,
written: usize,
}
impl<const N: usize> Default for Buffer<N> {
fn default() -> Self {
Self {
allocation: Box::new(
// SAFETY: zeroed memory is a valid [u8; N]
unsafe { MaybeUninit::zeroed().assume_init() },
),
written: 0,
}
}
}
impl<const N: usize> Buffer<N> {
#[inline(always)]
fn invariants(&self) {
// don't check by default, unoptimized is too expensive even for debug mode
if false {
debug_assert!(self.written <= N, "{}", self.written);
debug_assert!(self.allocation[self.written..N].iter().all(|v| *v == 0));
}
}
pub fn as_zero_padded_slice(&self) -> &[u8; N] {
&self.allocation
}
}
impl<const N: usize> crate::virtual_file::owned_buffers_io::write::Buffer for Buffer<N> {
type IoBuf = Self;
fn cap(&self) -> usize {
self.allocation.len()
}
fn extend_from_slice(&mut self, other: &[u8]) {
self.invariants();
let remaining = self.allocation.len() - self.written;
if other.len() > remaining {
panic!("calling extend_from_slice() with insufficient remaining capacity");
}
self.allocation[self.written..(self.written + other.len())].copy_from_slice(other);
self.written += other.len();
self.invariants();
}
fn pending(&self) -> usize {
self.written
}
fn flush(self) -> tokio_epoll_uring::Slice<Self> {
self.invariants();
let written = self.written;
tokio_epoll_uring::BoundedBuf::slice(self, 0..written)
}
fn reuse_after_flush(iobuf: Self::IoBuf) -> Self {
let Self {
mut allocation,
written,
} = iobuf;
allocation[0..written].fill(0);
let new = Self {
allocation,
written: 0,
};
new.invariants();
new
}
}
/// We have this trait impl so that the `flush` method in the `Buffer` impl above can produce a
/// [`tokio_epoll_uring::BoundedBuf::slice`] of the [`Self::written`] range of the data.
///
/// Remember that bytes_init is generally _not_ a tracker of the amount
/// of valid data in the io buffer; we use `Slice` for that.
/// The `IoBuf` is _only_ for keeping track of uninitialized memory, a bit like MaybeUninit.
///
/// SAFETY:
///
/// The [`Self::allocation`] is stable becauses boxes are stable.
/// The memory is zero-initialized, so, bytes_init is always N.
unsafe impl<const N: usize> tokio_epoll_uring::IoBuf for Buffer<N> {
fn stable_ptr(&self) -> *const u8 {
self.allocation.as_ptr()
}
fn bytes_init(&self) -> usize {
// Yes, N, not self.written; Read the full comment of this impl block!
N
}
fn bytes_total(&self) -> usize {
N
}
}

View File

@@ -235,12 +235,6 @@ impl TimelineMetadata {
let bytes = instance.to_bytes().unwrap();
Self::from_bytes(&bytes).unwrap()
}
pub(crate) fn apply(&mut self, update: &MetadataUpdate) {
self.body.disk_consistent_lsn = update.disk_consistent_lsn;
self.body.prev_record_lsn = update.prev_record_lsn;
self.body.latest_gc_cutoff_lsn = update.latest_gc_cutoff_lsn;
}
}
impl<'de> Deserialize<'de> for TimelineMetadata {
@@ -265,27 +259,6 @@ impl Serialize for TimelineMetadata {
}
}
/// Parts of the metadata which are regularly modified.
pub(crate) struct MetadataUpdate {
disk_consistent_lsn: Lsn,
prev_record_lsn: Option<Lsn>,
latest_gc_cutoff_lsn: Lsn,
}
impl MetadataUpdate {
pub(crate) fn new(
disk_consistent_lsn: Lsn,
prev_record_lsn: Option<Lsn>,
latest_gc_cutoff_lsn: Lsn,
) -> Self {
Self {
disk_consistent_lsn,
prev_record_lsn,
latest_gc_cutoff_lsn,
}
}
}
#[cfg(test)]
mod tests {
use super::*;

View File

@@ -678,19 +678,12 @@ pub async fn init_tenant_mgr(
}
}
}
LocationMode::Secondary(secondary_conf) => {
info!(
tenant_id = %tenant_shard_id.tenant_id,
shard_id = %tenant_shard_id.shard_slug(),
"Starting secondary tenant"
);
TenantSlot::Secondary(SecondaryTenant::new(
tenant_shard_id,
shard_identity,
location_conf.tenant_conf,
&secondary_conf,
))
}
LocationMode::Secondary(secondary_conf) => TenantSlot::Secondary(SecondaryTenant::new(
tenant_shard_id,
shard_identity,
location_conf.tenant_conf,
&secondary_conf,
)),
};
tenants.insert(tenant_shard_id, slot);
@@ -1417,15 +1410,9 @@ impl TenantManager {
match tenant.current_state() {
TenantState::Broken { .. } | TenantState::Stopping { .. } => {
// If deletion is already in progress, return success (the semantics of this
// function are to rerturn success afterr deletion is spawned in background).
// Otherwise fall through and let [`DeleteTenantFlow`] handle this state.
if DeleteTenantFlow::is_in_progress(&tenant) {
// The `delete_progress` lock is held: deletion is already happening
// in the bacckground
slot_guard.revert();
return Ok(());
}
// If a tenant is broken or stopping, DeleteTenantFlow can
// handle it: broken tenants proceed to delete, stopping tenants
// are checked for deletion already in progress.
}
_ => {
tenant

View File

@@ -202,9 +202,7 @@ use std::sync::atomic::{AtomicU32, Ordering};
use std::sync::{Arc, Mutex};
use std::time::Duration;
use remote_storage::{
DownloadError, GenericRemoteStorage, ListingMode, RemotePath, TimeoutOrCancel,
};
use remote_storage::{DownloadError, GenericRemoteStorage, RemotePath, TimeoutOrCancel};
use std::ops::DerefMut;
use tracing::{debug, error, info, instrument, warn};
use tracing::{info_span, Instrument};
@@ -238,14 +236,11 @@ use utils::id::{TenantId, TimelineId};
use self::index::IndexPart;
use super::metadata::MetadataUpdate;
use super::storage_layer::{Layer, LayerFileName, ResidentLayer};
use super::upload_queue::SetDeletedFlagProgress;
use super::Generation;
pub(crate) use download::{
download_index_part, is_temp_download_file, list_remote_tenant_shards, list_remote_timelines,
};
pub(crate) use download::{is_temp_download_file, list_remote_timelines};
pub(crate) use index::LayerFileMetadata;
// Occasional network issues and such can cause remote operations to fail, and
@@ -474,7 +469,7 @@ impl RemoteTimelineClient {
},
);
let (index_part, _index_generation) = download::download_index_part(
let index_part = download::download_index_part(
&self.storage_impl,
&self.tenant_shard_id,
&self.timeline_id,
@@ -541,10 +536,9 @@ impl RemoteTimelineClient {
// Upload operations.
//
/// Launch an index-file upload operation in the background, with
/// fully updated metadata.
///
/// This should only be used to upload initial metadata to remote storage.
/// Launch an index-file upload operation in the background, with
/// updated metadata.
///
/// The upload will be added to the queue immediately, but it
/// won't be performed until all previously scheduled layer file
@@ -556,7 +550,7 @@ impl RemoteTimelineClient {
/// If there were any changes to the list of files, i.e. if any
/// layer file uploads were scheduled, since the last index file
/// upload, those will be included too.
pub fn schedule_index_upload_for_full_metadata_update(
pub fn schedule_index_upload_for_metadata_update(
self: &Arc<Self>,
metadata: &TimelineMetadata,
) -> anyhow::Result<()> {
@@ -572,27 +566,6 @@ impl RemoteTimelineClient {
Ok(())
}
/// Launch an index-file upload operation in the background, with only parts of the metadata
/// updated.
///
/// This is the regular way of updating metadata on layer flushes or Gc.
///
/// Using this lighter update mechanism allows for reparenting and detaching without changes to
/// `index_part.json`, while being more clear on what values update regularly.
pub(crate) fn schedule_index_upload_for_metadata_update(
self: &Arc<Self>,
update: &MetadataUpdate,
) -> anyhow::Result<()> {
let mut guard = self.upload_queue.lock().unwrap();
let upload_queue = guard.initialized_mut()?;
upload_queue.latest_metadata.apply(update);
self.schedule_index_upload(upload_queue, upload_queue.latest_metadata.clone());
Ok(())
}
///
/// Launch an index-file upload operation in the background, if necessary.
///
@@ -1149,7 +1122,7 @@ impl RemoteTimelineClient {
// and retry will arrive to different pageserver there wont be any traces of it on remote storage
let timeline_storage_path = remote_timeline_path(&self.tenant_shard_id, &self.timeline_id);
// Execute all pending deletions, so that when we proceed to do a listing below, we aren't
// Execute all pending deletions, so that when we proceed to do a list_prefixes below, we aren't
// taking the burden of listing all the layers that we already know we should delete.
self.flush_deletion_queue().await?;
@@ -1158,20 +1131,14 @@ impl RemoteTimelineClient {
let remaining = download_retry(
|| async {
self.storage_impl
.list(
Some(&timeline_storage_path),
ListingMode::NoDelimiter,
None,
&cancel,
)
.list_files(Some(&timeline_storage_path), None, &cancel)
.await
},
"list remaining files",
&cancel,
)
.await
.context("list files remaining files")?
.keys;
.context("list files remaining files")?;
// We will delete the current index_part object last, since it acts as a deletion
// marker via its deleted_at attribute
@@ -1718,11 +1685,6 @@ impl RemoteTimelineClient {
}
}
pub fn remote_tenant_path(tenant_shard_id: &TenantShardId) -> RemotePath {
let path = format!("tenants/{tenant_shard_id}");
RemotePath::from_string(&path).expect("Failed to construct path")
}
pub fn remote_timelines_path(tenant_shard_id: &TenantShardId) -> RemotePath {
let path = format!("tenants/{tenant_shard_id}/{TIMELINES_SEGMENT_NAME}");
RemotePath::from_string(&path).expect("Failed to construct path")
@@ -2062,7 +2024,7 @@ mod tests {
// Schedule upload of index. Check that it is queued
let metadata = dummy_metadata(Lsn(0x20));
client
.schedule_index_upload_for_full_metadata_update(&metadata)
.schedule_index_upload_for_metadata_update(&metadata)
.unwrap();
{
let mut guard = client.upload_queue.lock().unwrap();

View File

@@ -5,7 +5,6 @@
use std::collections::HashSet;
use std::future::Future;
use std::str::FromStr;
use anyhow::{anyhow, Context};
use camino::{Utf8Path, Utf8PathBuf};
@@ -26,13 +25,13 @@ use crate::virtual_file::{on_fatal_io_error, MaybeFatalIo, VirtualFile};
use crate::TEMP_FILE_SUFFIX;
use remote_storage::{DownloadError, GenericRemoteStorage, ListingMode, RemotePath};
use utils::crashsafe::path_with_suffix_extension;
use utils::id::{TenantId, TimelineId};
use utils::id::TimelineId;
use super::index::{IndexPart, LayerFileMetadata};
use super::{
parse_remote_index_path, remote_index_path, remote_initdb_archive_path,
remote_initdb_preserved_archive_path, remote_tenant_path, FAILED_DOWNLOAD_WARN_THRESHOLD,
FAILED_REMOTE_OP_RETRIES, INITDB_PATH,
remote_initdb_preserved_archive_path, FAILED_DOWNLOAD_WARN_THRESHOLD, FAILED_REMOTE_OP_RETRIES,
INITDB_PATH,
};
///
@@ -183,7 +182,6 @@ async fn download_object<'a>(
#[cfg(target_os = "linux")]
crate::virtual_file::io_engine::IoEngine::TokioEpollUring => {
use crate::virtual_file::owned_buffers_io::{self, util::size_tracking_writer};
use bytes::BytesMut;
async {
let destination_file = VirtualFile::create(dst_path)
.await
@@ -196,10 +194,10 @@ async fn download_object<'a>(
// There's chunks_vectored() on the stream.
let (bytes_amount, destination_file) = async {
let size_tracking = size_tracking_writer::Writer::new(destination_file);
let mut buffered = owned_buffers_io::write::BufferedWriter::<BytesMut, _>::new(
size_tracking,
BytesMut::with_capacity(super::BUFFER_SIZE),
);
let mut buffered = owned_buffers_io::write::BufferedWriter::<
{ super::BUFFER_SIZE },
_,
>::new(size_tracking);
while let Some(res) =
futures::StreamExt::next(&mut download.download_stream).await
{
@@ -254,31 +252,42 @@ pub(crate) fn is_temp_download_file(path: &Utf8Path) -> bool {
}
}
async fn list_identifiers<T>(
/// List timelines of given tenant in remote storage
pub async fn list_remote_timelines(
storage: &GenericRemoteStorage,
prefix: RemotePath,
tenant_shard_id: TenantShardId,
cancel: CancellationToken,
) -> anyhow::Result<(HashSet<T>, HashSet<String>)>
where
T: FromStr + Eq + std::hash::Hash,
{
) -> anyhow::Result<(HashSet<TimelineId>, HashSet<String>)> {
let remote_path = remote_timelines_path(&tenant_shard_id);
fail::fail_point!("storage-sync-list-remote-timelines", |_| {
anyhow::bail!("storage-sync-list-remote-timelines");
});
let listing = download_retry_forever(
|| storage.list(Some(&prefix), ListingMode::WithDelimiter, None, &cancel),
&format!("list identifiers in prefix {prefix}"),
|| {
storage.list(
Some(&remote_path),
ListingMode::WithDelimiter,
None,
&cancel,
)
},
&format!("list timelines for {tenant_shard_id}"),
&cancel,
)
.await?;
let mut parsed_ids = HashSet::new();
let mut timeline_ids = HashSet::new();
let mut other_prefixes = HashSet::new();
for id_remote_storage_key in listing.prefixes {
let object_name = id_remote_storage_key.object_name().ok_or_else(|| {
anyhow::anyhow!("failed to get object name for key {id_remote_storage_key}")
for timeline_remote_storage_key in listing.prefixes {
let object_name = timeline_remote_storage_key.object_name().ok_or_else(|| {
anyhow::anyhow!("failed to get timeline id for remote tenant {tenant_shard_id}")
})?;
match object_name.parse::<T>() {
Ok(t) => parsed_ids.insert(t),
match object_name.parse::<TimelineId>() {
Ok(t) => timeline_ids.insert(t),
Err(_) => other_prefixes.insert(object_name.to_string()),
};
}
@@ -290,31 +299,7 @@ where
other_prefixes.insert(object_name.to_string());
}
Ok((parsed_ids, other_prefixes))
}
/// List shards of given tenant in remote storage
pub(crate) async fn list_remote_tenant_shards(
storage: &GenericRemoteStorage,
tenant_id: TenantId,
cancel: CancellationToken,
) -> anyhow::Result<(HashSet<TenantShardId>, HashSet<String>)> {
let remote_path = remote_tenant_path(&TenantShardId::unsharded(tenant_id));
list_identifiers::<TenantShardId>(storage, remote_path, cancel).await
}
/// List timelines of given tenant shard in remote storage
pub async fn list_remote_timelines(
storage: &GenericRemoteStorage,
tenant_shard_id: TenantShardId,
cancel: CancellationToken,
) -> anyhow::Result<(HashSet<TimelineId>, HashSet<String>)> {
fail::fail_point!("storage-sync-list-remote-timelines", |_| {
anyhow::bail!("storage-sync-list-remote-timelines");
});
let remote_path = remote_timelines_path(&tenant_shard_id).add_trailing_slash();
list_identifiers::<TimelineId>(storage, remote_path, cancel).await
Ok((timeline_ids, other_prefixes))
}
async fn do_download_index_part(
@@ -323,7 +308,7 @@ async fn do_download_index_part(
timeline_id: &TimelineId,
index_generation: Generation,
cancel: &CancellationToken,
) -> Result<(IndexPart, Generation), DownloadError> {
) -> Result<IndexPart, DownloadError> {
let remote_path = remote_index_path(tenant_shard_id, timeline_id, index_generation);
let index_part_bytes = download_retry_forever(
@@ -348,7 +333,7 @@ async fn do_download_index_part(
.with_context(|| format!("deserialize index part file at {remote_path:?}"))
.map_err(DownloadError::Other)?;
Ok((index_part, index_generation))
Ok(index_part)
}
/// index_part.json objects are suffixed with a generation number, so we cannot
@@ -357,13 +342,13 @@ async fn do_download_index_part(
/// In this function we probe for the most recent index in a generation <= our current generation.
/// See "Finding the remote indices for timelines" in docs/rfcs/025-generation-numbers.md
#[tracing::instrument(skip_all, fields(generation=?my_generation))]
pub(crate) async fn download_index_part(
pub(super) async fn download_index_part(
storage: &GenericRemoteStorage,
tenant_shard_id: &TenantShardId,
timeline_id: &TimelineId,
my_generation: Generation,
cancel: &CancellationToken,
) -> Result<(IndexPart, Generation), DownloadError> {
) -> Result<IndexPart, DownloadError> {
debug_assert_current_span_has_tenant_and_timeline_id();
if my_generation.is_none() {
@@ -432,16 +417,11 @@ pub(crate) async fn download_index_part(
let index_prefix = remote_index_path(tenant_shard_id, timeline_id, Generation::none());
let indices = download_retry(
|| async {
storage
.list(Some(&index_prefix), ListingMode::NoDelimiter, None, cancel)
.await
},
|| async { storage.list_files(Some(&index_prefix), None, cancel).await },
"list index_part files",
cancel,
)
.await?
.keys;
.await?;
// General case logic for which index to use: the latest index whose generation
// is <= our own. See "Finding the remote indices for timelines" in docs/rfcs/025-generation-numbers.md

View File

@@ -167,7 +167,7 @@ pub(crate) async fn time_travel_recover_tenant(
let warn_after = 3;
let max_attempts = 10;
let mut prefixes = Vec::with_capacity(2);
if tenant_shard_id.is_shard_zero() {
if tenant_shard_id.is_zero() {
// Also recover the unsharded prefix for a shard of zero:
// - if the tenant is totally unsharded, the unsharded prefix contains all the data
// - if the tenant is sharded, we still want to recover the initdb data, but we only

View File

@@ -312,7 +312,7 @@ impl JobGenerator<PendingDownload, RunningDownload, CompleteDownload, DownloadCo
(detail.last_download, detail.next_download.unwrap())
};
if now > next_download {
if now < next_download {
Some(PendingDownload {
secondary_state: secondary_tenant,
last_download,
@@ -647,12 +647,6 @@ impl<'a> TenantDownloader<'a> {
progress.bytes_downloaded += layer_byte_count;
progress.layers_downloaded += layer_count;
}
for delete_timeline in &delete_timelines {
// We haven't removed from disk yet, but optimistically remove from in-memory state: if removal
// from disk fails that will be a fatal error.
detail.timelines.remove(delete_timeline);
}
}
// Execute accumulated deletions
@@ -716,14 +710,13 @@ impl<'a> TenantDownloader<'a> {
.await
.map_err(UpdateError::from)?;
SECONDARY_MODE.download_heatmap.inc();
if Some(&download.etag) == prev_etag {
Ok(HeatMapDownload::Unmodified)
} else {
let mut heatmap_bytes = Vec::new();
let mut body = tokio_util::io::StreamReader::new(download.download_stream);
let _size = tokio::io::copy_buf(&mut body, &mut heatmap_bytes).await?;
SECONDARY_MODE.download_heatmap.inc();
Ok(HeatMapDownload::Modified(HeatMapModified {
etag: download.etag,
last_modified: download.last_modified,

View File

@@ -118,9 +118,6 @@ pub(super) async fn gather_inputs(
ctx: &RequestContext,
) -> anyhow::Result<ModelInputs> {
// refresh is needed to update gc related pitr_cutoff and horizon_cutoff
//
// FIXME: if a single timeline is deleted while refresh gc info is ongoing, we will fail the
// whole computation. It does not make sense from the billing perspective.
tenant
.refresh_gc_info(cancel, ctx)
.await

View File

@@ -118,7 +118,6 @@ pub(crate) struct ValuesReconstructState {
pub(crate) keys: HashMap<Key, Result<VectoredValueReconstructState, PageReconstructError>>,
keys_done: KeySpaceRandomAccum,
layers_visited: u32,
}
impl ValuesReconstructState {
@@ -126,7 +125,6 @@ impl ValuesReconstructState {
Self {
keys: HashMap::new(),
keys_done: KeySpaceRandomAccum::new(),
layers_visited: 0,
}
}
@@ -140,37 +138,6 @@ impl ValuesReconstructState {
}
}
pub(crate) fn on_layer_visited(&mut self) {
self.layers_visited += 1;
}
pub(crate) fn get_layers_visited(&self) -> u32 {
self.layers_visited
}
/// This function is called after reading a keyspace from a layer.
/// It checks if the read path has now moved past the cached Lsn for any keys.
///
/// Implementation note: We intentionally iterate over the keys for which we've
/// already collected some reconstruct data. This avoids scaling complexity with
/// the size of the search space.
pub(crate) fn on_lsn_advanced(&mut self, keyspace: &KeySpace, advanced_to: Lsn) {
for (key, value) in self.keys.iter_mut() {
if !keyspace.contains(key) {
continue;
}
if let Ok(state) = value {
if state.situation != ValueReconstructSituation::Complete
&& state.get_cached_lsn() >= Some(advanced_to)
{
state.situation = ValueReconstructSituation::Complete;
self.keys_done.add_key(*key);
}
}
}
}
/// Update the state collected for a given key.
/// Returns true if this was the last value needed for the key and false otherwise.
///
@@ -195,18 +162,11 @@ impl ValuesReconstructState {
true
}
Value::WalRecord(rec) => {
debug_assert!(
Some(lsn) > state.get_cached_lsn(),
"Attempt to collect a record below cached LSN for walredo: {} < {}",
lsn,
state
.get_cached_lsn()
.expect("Assertion can only fire if a cached lsn is present")
);
let reached_cache =
state.get_cached_lsn().map(|clsn| clsn + 1) == Some(lsn);
let will_init = rec.will_init();
state.records.push((lsn, rec));
will_init
will_init || reached_cache
}
},
};

View File

@@ -20,8 +20,8 @@
//! 000000067F000032BE0000400000000020B6-000000067F000032BE0000400000000030B6__000000578C6B29-0000000057A50051
//! ```
//!
//! Every delta file consists of three parts: "summary", "values", and
//! "index". The summary is a fixed size header at the beginning of the file,
//! Every delta file consists of three parts: "summary", "index", and
//! "values". The summary is a fixed size header at the beginning of the file,
//! and it contains basic information about the layer, and offsets to the other
//! parts. The "index" is a B-tree, mapping from Key and LSN to an offset in the
//! "values" part. The actual page images and WAL records are stored in the
@@ -217,7 +217,6 @@ pub struct DeltaLayerInner {
// values copied from summary
index_start_blk: u32,
index_root_blk: u32,
lsn_range: Range<Lsn>,
file: VirtualFile,
file_id: FileId,
@@ -729,9 +728,6 @@ impl DeltaLayerInner {
// production code path
expected_summary.index_start_blk = actual_summary.index_start_blk;
expected_summary.index_root_blk = actual_summary.index_root_blk;
// mask out the timeline_id, but still require the layers to be from the same tenant
expected_summary.timeline_id = actual_summary.timeline_id;
if actual_summary != expected_summary {
bail!(
"in-file summary does not match expected summary. actual = {:?} expected = {:?}",
@@ -746,7 +742,6 @@ impl DeltaLayerInner {
file_id,
index_start_blk: actual_summary.index_start_blk,
index_root_blk: actual_summary.index_root_blk,
lsn_range: actual_summary.lsn_range,
max_vectored_read_bytes,
}))
}
@@ -868,10 +863,10 @@ impl DeltaLayerInner {
.into(),
);
let data_end_offset = self.index_start_offset();
let data_end_offset = self.index_start_blk as u64 * PAGE_SZ as u64;
let reads = Self::plan_reads(
&keyspace,
keyspace,
lsn_range,
data_end_offset,
index_reader,
@@ -885,13 +880,11 @@ impl DeltaLayerInner {
self.do_reads_and_update_state(reads, reconstruct_state)
.await;
reconstruct_state.on_lsn_advanced(&keyspace, self.lsn_range.start);
Ok(())
}
async fn plan_reads<Reader>(
keyspace: &KeySpace,
keyspace: KeySpace,
lsn_range: Range<Lsn>,
data_end_offset: u64,
index_reader: DiskBtreeReader<Reader, DELTA_KEY_SIZE>,
@@ -946,7 +939,7 @@ impl DeltaLayerInner {
}
if !range_end_handled {
tracing::debug!("Handling range end fallback at {}", data_end_offset);
tracing::info!("Handling range end fallback at {}", data_end_offset);
planner.handle_range_end(data_end_offset);
}
}
@@ -1110,195 +1103,11 @@ impl DeltaLayerInner {
if let Some(last) = all_keys.last_mut() {
// Last key occupies all space till end of value storage,
// which corresponds to beginning of the index
last.size = self.index_start_offset() - last.size;
last.size = self.index_start_blk as u64 * PAGE_SZ as u64 - last.size;
}
Ok(all_keys)
}
/// Using the given writer, write out a truncated version, where LSNs higher than the
/// truncate_at are missing.
#[cfg(test)]
pub(super) async fn copy_prefix(
&self,
writer: &mut DeltaLayerWriter,
truncate_at: Lsn,
ctx: &RequestContext,
) -> anyhow::Result<()> {
use crate::tenant::vectored_blob_io::{
BlobMeta, VectoredReadBuilder, VectoredReadExtended,
};
use futures::stream::TryStreamExt;
#[derive(Debug)]
enum Item {
Actual(Key, Lsn, BlobRef),
Sentinel,
}
impl From<Item> for Option<(Key, Lsn, BlobRef)> {
fn from(value: Item) -> Self {
match value {
Item::Actual(key, lsn, blob) => Some((key, lsn, blob)),
Item::Sentinel => None,
}
}
}
impl Item {
fn offset(&self) -> Option<BlobRef> {
match self {
Item::Actual(_, _, blob) => Some(*blob),
Item::Sentinel => None,
}
}
fn is_last(&self) -> bool {
matches!(self, Item::Sentinel)
}
}
let block_reader = FileBlockReader::new(&self.file, self.file_id);
let tree_reader = DiskBtreeReader::<_, DELTA_KEY_SIZE>::new(
self.index_start_blk,
self.index_root_blk,
block_reader,
);
let stream = self.stream_index_forwards(&tree_reader, &[0u8; DELTA_KEY_SIZE], ctx);
let stream = stream.map_ok(|(key, lsn, pos)| Item::Actual(key, lsn, pos));
// put in a sentinel value for getting the end offset for last item, and not having to
// repeat the whole read part
let stream = stream.chain(futures::stream::once(futures::future::ready(Ok(
Item::Sentinel,
))));
let mut stream = std::pin::pin!(stream);
let mut prev: Option<(Key, Lsn, BlobRef)> = None;
let mut read_builder: Option<VectoredReadBuilder> = None;
let max_read_size = self
.max_vectored_read_bytes
.map(|x| x.0.get())
.unwrap_or(8192);
let mut buffer = Some(BytesMut::with_capacity(max_read_size));
// FIXME: buffering of DeltaLayerWriter
let mut per_blob_copy = Vec::new();
while let Some(item) = stream.try_next().await? {
tracing::debug!(?item, "popped");
let offset = item
.offset()
.unwrap_or(BlobRef::new(self.index_start_offset(), false));
let actionable = if let Some((key, lsn, start_offset)) = prev.take() {
let end_offset = offset;
Some((BlobMeta { key, lsn }, start_offset..end_offset))
} else {
None
};
let is_last = item.is_last();
prev = Option::from(item);
let actionable = actionable.filter(|x| x.0.lsn < truncate_at);
let builder = if let Some((meta, offsets)) = actionable {
// extend or create a new builder
if read_builder
.as_mut()
.map(|x| x.extend(offsets.start.pos(), offsets.end.pos(), meta))
.unwrap_or(VectoredReadExtended::No)
== VectoredReadExtended::Yes
{
None
} else {
read_builder.replace(VectoredReadBuilder::new(
offsets.start.pos(),
offsets.end.pos(),
meta,
max_read_size,
))
}
} else {
// nothing to do, except perhaps flush any existing for the last element
None
};
// flush the possible older builder and also the new one if the item was the last one
let builders = builder.into_iter();
let builders = if is_last {
builders.chain(read_builder.take())
} else {
builders.chain(None)
};
for builder in builders {
let read = builder.build();
let reader = VectoredBlobReader::new(&self.file);
let mut buf = buffer.take().unwrap();
buf.clear();
buf.reserve(read.size());
let res = reader.read_blobs(&read, buf).await?;
for blob in res.blobs {
let key = blob.meta.key;
let lsn = blob.meta.lsn;
let data = &res.buf[blob.start..blob.end];
#[cfg(debug_assertions)]
Value::des(data)
.with_context(|| {
format!(
"blob failed to deserialize for {}@{}, {}..{}: {:?}",
blob.meta.key,
blob.meta.lsn,
blob.start,
blob.end,
utils::Hex(data)
)
})
.unwrap();
// is it an image or will_init walrecord?
// FIXME: this could be handled by threading the BlobRef to the
// VectoredReadBuilder
let will_init = crate::repository::ValueBytes::will_init(data)
.inspect_err(|_e| {
#[cfg(feature = "testing")]
tracing::error!(data=?utils::Hex(data), err=?_e, "failed to parse will_init out of serialized value");
})
.unwrap_or(false);
per_blob_copy.clear();
per_blob_copy.extend_from_slice(data);
let (tmp, res) = writer
.put_value_bytes(key, lsn, std::mem::take(&mut per_blob_copy), will_init)
.await;
per_blob_copy = tmp;
res?;
}
buffer = Some(res.buf);
}
}
assert!(
read_builder.is_none(),
"with the sentinel above loop should had handled all"
);
Ok(())
}
pub(super) async fn dump(&self, ctx: &RequestContext) -> anyhow::Result<()> {
println!(
"index_start_blk: {}, root {}",
@@ -1368,44 +1177,6 @@ impl DeltaLayerInner {
Ok(())
}
#[cfg(test)]
fn stream_index_forwards<'a, R>(
&'a self,
reader: &'a DiskBtreeReader<R, DELTA_KEY_SIZE>,
start: &'a [u8; DELTA_KEY_SIZE],
ctx: &'a RequestContext,
) -> impl futures::stream::Stream<
Item = Result<(Key, Lsn, BlobRef), crate::tenant::disk_btree::DiskBtreeError>,
> + 'a
where
R: BlockReader,
{
use futures::stream::TryStreamExt;
let stream = reader.get_stream_from(start, ctx);
stream.map_ok(|(key, value)| {
let key = DeltaKey::from_slice(&key);
let (key, lsn) = (key.key(), key.lsn());
let offset = BlobRef(value);
(key, lsn, offset)
})
}
/// The file offset to the first block of index.
///
/// The file structure is summary, values, and index. We often need this for the size of last blob.
fn index_start_offset(&self) -> u64 {
let offset = self.index_start_blk as u64 * PAGE_SZ as u64;
let bref = BlobRef(offset);
tracing::debug!(
index_start_blk = self.index_start_blk,
offset,
pos = bref.pos(),
"index_start_offset"
);
offset
}
}
/// A set of data associated with a delta layer key and its value
@@ -1539,7 +1310,7 @@ mod test {
// Plan and validate
let vectored_reads = DeltaLayerInner::plan_reads(
&keyspace,
keyspace.clone(),
lsn_range.clone(),
disk_offset,
reader,
@@ -1767,7 +1538,7 @@ mod test {
let resident = writer.finish(entries_meta.key_range.end, &timeline).await?;
let inner = resident.as_delta(&ctx).await?;
let inner = resident.get_inner_delta(&ctx).await?;
let file_size = inner.file.metadata().await?.len();
tracing::info!(
@@ -1791,7 +1562,7 @@ mod test {
let data_end_offset = inner.index_start_blk as u64 * PAGE_SZ as u64;
let vectored_reads = DeltaLayerInner::plan_reads(
&keyspace,
keyspace.clone(),
entries_meta.lsn_range.clone(),
data_end_offset,
index_reader,
@@ -1823,217 +1594,4 @@ mod test {
Ok(())
}
#[tokio::test]
async fn copy_delta_prefix_smoke() {
use crate::walrecord::NeonWalRecord;
use bytes::Bytes;
let h = crate::tenant::harness::TenantHarness::create("truncate_delta_smoke").unwrap();
let (tenant, ctx) = h.load().await;
let ctx = &ctx;
let timeline = tenant
.create_test_timeline(TimelineId::generate(), Lsn(0x10), 14, ctx)
.await
.unwrap();
let initdb_layer = timeline
.layers
.read()
.await
.likely_resident_layers()
.next()
.unwrap();
{
let mut writer = timeline.writer().await;
let data = [
(0x20, 12, Value::Image(Bytes::from_static(b"foobar"))),
(
0x30,
12,
Value::WalRecord(NeonWalRecord::Postgres {
will_init: false,
rec: Bytes::from_static(b"1"),
}),
),
(
0x40,
12,
Value::WalRecord(NeonWalRecord::Postgres {
will_init: true,
rec: Bytes::from_static(b"2"),
}),
),
// build an oversized value so we cannot extend and existing read over
// this
(
0x50,
12,
Value::WalRecord(NeonWalRecord::Postgres {
will_init: true,
rec: {
let mut buf =
vec![0u8; tenant.conf.max_vectored_read_bytes.0.get() + 1024];
buf.iter_mut()
.enumerate()
.for_each(|(i, slot)| *slot = (i % 256) as u8);
Bytes::from(buf)
},
}),
),
// because the oversized read cannot be extended further, we are sure to exercise the
// builder created on the last round with this:
(
0x60,
12,
Value::WalRecord(NeonWalRecord::Postgres {
will_init: true,
rec: Bytes::from_static(b"3"),
}),
),
(
0x60,
9,
Value::Image(Bytes::from_static(b"something for a different key")),
),
];
let mut last_lsn = None;
for (lsn, key, value) in data {
let key = Key::from_i128(key);
writer.put(key, Lsn(lsn), &value, ctx).await.unwrap();
last_lsn = Some(lsn);
}
writer.finish_write(Lsn(last_lsn.unwrap()));
}
timeline.freeze_and_flush().await.unwrap();
let new_layer = timeline
.layers
.read()
.await
.likely_resident_layers()
.find(|x| x != &initdb_layer)
.unwrap();
// create a copy for the timeline, so we don't overwrite the file
let branch = tenant
.branch_timeline_test(&timeline, TimelineId::generate(), None, ctx)
.await
.unwrap();
assert_eq!(branch.get_ancestor_lsn(), Lsn(0x60));
// truncating at 0x61 gives us a full copy, otherwise just go backwards until there's just
// a single key
for truncate_at in [0x61, 0x51, 0x41, 0x31, 0x21] {
let truncate_at = Lsn(truncate_at);
let mut writer = DeltaLayerWriter::new(
tenant.conf,
branch.timeline_id,
tenant.tenant_shard_id,
Key::MIN,
Lsn(0x11)..truncate_at,
)
.await
.unwrap();
let new_layer = new_layer.download_and_keep_resident().await.unwrap();
new_layer
.copy_delta_prefix(&mut writer, truncate_at, ctx)
.await
.unwrap();
let copied_layer = writer.finish(Key::MAX, &branch).await.unwrap();
copied_layer.as_delta(ctx).await.unwrap();
assert_keys_and_values_eq(
new_layer.as_delta(ctx).await.unwrap(),
copied_layer.as_delta(ctx).await.unwrap(),
truncate_at,
ctx,
)
.await;
}
}
async fn assert_keys_and_values_eq(
source: &DeltaLayerInner,
truncated: &DeltaLayerInner,
truncated_at: Lsn,
ctx: &RequestContext,
) {
use futures::future::ready;
use futures::stream::TryStreamExt;
let start_key = [0u8; DELTA_KEY_SIZE];
let source_reader = FileBlockReader::new(&source.file, source.file_id);
let source_tree = DiskBtreeReader::<_, DELTA_KEY_SIZE>::new(
source.index_start_blk,
source.index_root_blk,
&source_reader,
);
let source_stream = source.stream_index_forwards(&source_tree, &start_key, ctx);
let source_stream = source_stream.filter(|res| match res {
Ok((_, lsn, _)) => ready(lsn < &truncated_at),
_ => ready(true),
});
let mut source_stream = std::pin::pin!(source_stream);
let truncated_reader = FileBlockReader::new(&truncated.file, truncated.file_id);
let truncated_tree = DiskBtreeReader::<_, DELTA_KEY_SIZE>::new(
truncated.index_start_blk,
truncated.index_root_blk,
&truncated_reader,
);
let truncated_stream = truncated.stream_index_forwards(&truncated_tree, &start_key, ctx);
let mut truncated_stream = std::pin::pin!(truncated_stream);
let mut scratch_left = Vec::new();
let mut scratch_right = Vec::new();
loop {
let (src, truncated) = (source_stream.try_next(), truncated_stream.try_next());
let (src, truncated) = tokio::try_join!(src, truncated).unwrap();
if src.is_none() {
assert!(truncated.is_none());
break;
}
let (src, truncated) = (src.unwrap(), truncated.unwrap());
// because we've filtered the source with Lsn, we should always have the same keys from both.
assert_eq!(src.0, truncated.0);
assert_eq!(src.1, truncated.1);
// if this is needed for something else, just drop this assert.
assert!(
src.2.pos() >= truncated.2.pos(),
"value position should not go backwards {} vs. {}",
src.2.pos(),
truncated.2.pos()
);
scratch_left.clear();
let src_cursor = source_reader.block_cursor();
let left = src_cursor.read_blob_into_buf(src.2.pos(), &mut scratch_left, ctx);
scratch_right.clear();
let trunc_cursor = truncated_reader.block_cursor();
let right = trunc_cursor.read_blob_into_buf(truncated.2.pos(), &mut scratch_right, ctx);
tokio::try_join!(left, right).unwrap();
assert_eq!(utils::Hex(&scratch_left), utils::Hex(&scratch_right));
}
}
}

View File

@@ -396,8 +396,6 @@ impl ImageLayerInner {
// production code path
expected_summary.index_start_blk = actual_summary.index_start_blk;
expected_summary.index_root_blk = actual_summary.index_root_blk;
// mask out the timeline_id, but still require the layers to be from the same tenant
expected_summary.timeline_id = actual_summary.timeline_id;
if actual_summary != expected_summary {
bail!(

View File

@@ -26,7 +26,7 @@ use utils::{bin_ser::BeSer, id::TimelineId, lsn::Lsn, vec_map::VecMap};
// while being able to use std::fmt::Write's methods
use crate::metrics::TIMELINE_EPHEMERAL_BYTES;
use std::cmp::Ordering;
use std::fmt::Write;
use std::fmt::Write as _;
use std::ops::Range;
use std::sync::atomic::Ordering as AtomicOrdering;
use std::sync::atomic::{AtomicU64, AtomicUsize};
@@ -54,12 +54,6 @@ pub struct InMemoryLayer {
/// Writes are only allowed when this is `None`.
end_lsn: OnceLock<Lsn>,
/// Used for traversal path. Cached representation of the in-memory layer before frozen.
local_path_str: Arc<str>,
/// Used for traversal path. Cached representation of the in-memory layer after frozen.
frozen_local_path_str: OnceLock<Arc<str>>,
opened_at: Instant,
/// The above fields never change, except for `end_lsn`, which is only set once.
@@ -247,12 +241,6 @@ impl InMemoryLayer {
self.start_lsn..self.end_lsn_or_max()
}
pub(crate) fn local_path_str(&self) -> &Arc<str> {
self.frozen_local_path_str
.get()
.unwrap_or(&self.local_path_str)
}
/// debugging function to print out the contents of the layer
///
/// this is likely completly unused
@@ -438,30 +426,14 @@ impl InMemoryLayer {
}
}
reconstruct_state.on_lsn_advanced(&keyspace, self.start_lsn);
Ok(())
}
}
fn inmem_layer_display(mut f: impl Write, start_lsn: Lsn, end_lsn: Lsn) -> std::fmt::Result {
write!(f, "inmem-{:016X}-{:016X}", start_lsn.0, end_lsn.0)
}
fn inmem_layer_log_display(
mut f: impl Write,
timeline: TimelineId,
start_lsn: Lsn,
end_lsn: Lsn,
) -> std::fmt::Result {
write!(f, "timeline {} in-memory ", timeline)?;
inmem_layer_display(f, start_lsn, end_lsn)
}
impl std::fmt::Display for InMemoryLayer {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
let end_lsn = self.end_lsn_or_max();
inmem_layer_display(f, self.start_lsn, end_lsn)
write!(f, "inmem-{:016X}-{:016X}", self.start_lsn.0, end_lsn.0)
}
}
@@ -482,16 +454,10 @@ impl InMemoryLayer {
trace!("initializing new empty InMemoryLayer for writing on timeline {timeline_id} at {start_lsn}");
let file = EphemeralFile::create(conf, tenant_shard_id, timeline_id).await?;
let key = InMemoryLayerFileId(file.page_cache_file_id());
let key = InMemoryLayerFileId(file.id());
Ok(InMemoryLayer {
file_id: key,
local_path_str: {
let mut buf = String::new();
inmem_layer_log_display(&mut buf, timeline_id, start_lsn, Lsn::MAX).unwrap();
buf.into()
},
frozen_local_path_str: OnceLock::new(),
conf,
timeline_id,
tenant_shard_id,
@@ -586,15 +552,6 @@ impl InMemoryLayer {
);
self.end_lsn.set(end_lsn).expect("end_lsn set only once");
self.frozen_local_path_str
.set({
let mut buf = String::new();
inmem_layer_log_display(&mut buf, self.get_timeline_id(), self.start_lsn, end_lsn)
.unwrap();
buf.into()
})
.expect("frozen_local_path_str set only once");
for vec_map in inner.index.values() {
for (lsn, _pos) in vec_map.as_slice() {
assert!(*lsn < end_lsn);

View File

@@ -116,12 +116,6 @@ impl AsLayerDesc for Layer {
}
}
impl PartialEq for Layer {
fn eq(&self, other: &Self) -> bool {
Arc::as_ptr(&self.0) == Arc::as_ptr(&other.0)
}
}
impl Layer {
/// Creates a layer value for a file we know to not be resident.
pub(crate) fn for_evicted(
@@ -336,12 +330,6 @@ impl Layer {
.get_values_reconstruct_data(keyspace, lsn_range, reconstruct_data, &self.0, ctx)
.instrument(tracing::debug_span!("get_values_reconstruct_data", layer=%self))
.await
.map_err(|err| match err {
GetVectoredError::Other(err) => GetVectoredError::Other(
err.context(format!("get_values_reconstruct_data for layer {self}")),
),
err => err,
})
}
/// Download the layer if evicted.
@@ -401,10 +389,6 @@ impl Layer {
&self.0.path
}
pub(crate) fn local_path_str(&self) -> &Arc<str> {
&self.0.path_str
}
pub(crate) fn metadata(&self) -> LayerFileMetadata {
self.0.metadata()
}
@@ -527,9 +511,6 @@ struct LayerInner {
/// Full path to the file; unclear if this should exist anymore.
path: Utf8PathBuf,
/// String representation of the full path, used for traversal id.
path_str: Arc<str>,
desc: PersistentLayerDesc,
/// Timeline access is needed for remote timeline client and metrics.
@@ -623,17 +604,9 @@ enum Status {
impl Drop for LayerInner {
fn drop(&mut self) {
// if there was a pending eviction, mark it cancelled here to balance metrics
if let Some((ResidentOrWantedEvicted::WantedEvicted(..), _)) = self.inner.take_and_deinit()
{
// eviction has already been started
LAYER_IMPL_METRICS.inc_eviction_cancelled(EvictionCancelled::LayerGone);
// eviction request is intentionally not honored as no one is present to wait for it
// and we could be delaying shutdown for nothing.
}
if !*self.wanted_deleted.get_mut() {
// should we try to evict if the last wish was for eviction? seems more like a hazard
// than a clear win.
return;
}
@@ -735,7 +708,6 @@ impl LayerInner {
LayerInner {
conf,
path_str: path.to_string().into(),
path,
desc,
timeline: Arc::downgrade(timeline),
@@ -1580,8 +1552,8 @@ impl Drop for DownloadedLayer {
if let Some(owner) = self.owner.upgrade() {
owner.on_downloaded_layer_drop(self.version);
} else {
// Layer::drop will handle cancelling the eviction; because of drop order and
// `DownloadedLayer` never leaking, we cannot know here if eviction was requested.
// no need to do anything, we are shutting down
LAYER_IMPL_METRICS.inc_eviction_cancelled(EvictionCancelled::LayerGone);
}
}
}
@@ -1780,28 +1752,6 @@ impl ResidentLayer {
}
}
/// FIXME: truncate is bad name because we are not truncating anything, but copying the
/// filtered parts.
#[cfg(test)]
pub(super) async fn copy_delta_prefix(
&self,
writer: &mut super::delta_layer::DeltaLayerWriter,
truncate_at: Lsn,
ctx: &RequestContext,
) -> anyhow::Result<()> {
use LayerKind::*;
let owner = &self.owner.0;
match self.downloaded.get(owner, ctx).await? {
Delta(ref d) => d
.copy_prefix(writer, truncate_at, ctx)
.await
.with_context(|| format!("truncate {self}")),
Image(_) => anyhow::bail!(format!("cannot truncate image layer {self}")),
}
}
pub(crate) fn local_path(&self) -> &Utf8Path {
&self.owner.0.path
}
@@ -1811,14 +1761,14 @@ impl ResidentLayer {
}
#[cfg(test)]
pub(crate) async fn as_delta(
&self,
pub(crate) async fn get_inner_delta<'a>(
&'a self,
ctx: &RequestContext,
) -> anyhow::Result<&delta_layer::DeltaLayerInner> {
use LayerKind::*;
match self.downloaded.get(&self.owner.0, ctx).await? {
Delta(ref d) => Ok(d),
Image(_) => Err(anyhow::anyhow!("image layer")),
) -> anyhow::Result<&'a delta_layer::DeltaLayerInner> {
let owner = &self.owner.0;
match self.downloaded.get(owner, ctx).await? {
LayerKind::Delta(d) => Ok(d),
LayerKind::Image(_) => Err(anyhow::anyhow!("Expected a delta layer")),
}
}
}

View File

@@ -721,110 +721,11 @@ async fn evict_and_wait_does_not_wait_for_download() {
layer.evict_and_wait(FOREVER).await.unwrap();
}
/// Asserts that there is no miscalculation when Layer is dropped while it is being kept resident,
/// which is the last value.
///
/// Also checks that the same does not happen on a non-evicted layer (regression test).
#[tokio::test(start_paused = true)]
async fn eviction_cancellation_on_drop() {
use crate::repository::Value;
use bytes::Bytes;
// this is the runtime on which Layer spawns the blocking tasks on
let handle = tokio::runtime::Handle::current();
let h = TenantHarness::create("eviction_cancellation_on_drop").unwrap();
utils::logging::replace_panic_hook_with_tracing_panic_hook().forget();
let (tenant, ctx) = h.load().await;
let timeline = tenant
.create_test_timeline(TimelineId::generate(), Lsn(0x10), 14, &ctx)
.await
.unwrap();
{
// create_test_timeline wrote us one layer, write another
let mut writer = timeline.writer().await;
writer
.put(
Key::from_i128(5),
Lsn(0x20),
&Value::Image(Bytes::from_static(b"this does not matter either")),
&ctx,
)
.await
.unwrap();
writer.finish_write(Lsn(0x20));
}
timeline.freeze_and_flush().await.unwrap();
// wait for the upload to complete so our Arc::strong_count assertion holds
timeline
.remote_client
.as_ref()
.unwrap()
.wait_completion()
.await
.unwrap();
let (evicted_layer, not_evicted) = {
let mut layers = {
let mut guard = timeline.layers.write().await;
let layers = guard.likely_resident_layers().collect::<Vec<_>>();
// remove the layers from layermap
guard.finish_gc_timeline(&layers);
layers
};
assert_eq!(layers.len(), 2);
(layers.pop().unwrap(), layers.pop().unwrap())
};
let victims = [(evicted_layer, true), (not_evicted, false)];
for (victim, evict) in victims {
let resident = victim.keep_resident().await.unwrap();
drop(victim);
assert_eq!(Arc::strong_count(&resident.owner.0), 1);
if evict {
let evict_and_wait = resident.owner.evict_and_wait(FOREVER);
// drive the future to await on the status channel, and then drop it
tokio::time::timeout(ADVANCE, evict_and_wait)
.await
.expect_err("should had been a timeout since we are holding the layer resident");
}
// 1 == we only evict one of the layers
assert_eq!(1, LAYER_IMPL_METRICS.started_evictions.get());
drop(resident);
// run any spawned
tokio::time::sleep(ADVANCE).await;
SpawnBlockingPoolHelper::consume_and_release_all_of_spawn_blocking_threads(&handle).await;
assert_eq!(
1,
LAYER_IMPL_METRICS.cancelled_evictions[EvictionCancelled::LayerGone].get()
);
}
}
/// A test case to remind you the cost of these structures. You can bump the size limit
/// below if it is really necessary to add more fields to the structures.
#[test]
fn layer_size() {
assert_eq!(std::mem::size_of::<LayerAccessStats>(), 2040);
assert_eq!(std::mem::size_of::<PersistentLayerDesc>(), 104);
assert_eq!(std::mem::size_of::<LayerInner>(), 2344);
assert_eq!(std::mem::size_of::<LayerInner>(), 2328);
// it also has the utf8 path
}

View File

@@ -62,7 +62,7 @@ impl BackgroundLoopKind {
pub(crate) async fn concurrent_background_tasks_rate_limit_permit(
loop_kind: BackgroundLoopKind,
_ctx: &RequestContext,
) -> tokio::sync::SemaphorePermit<'static> {
) -> impl Drop {
let _guard = crate::metrics::BACKGROUND_LOOP_SEMAPHORE_WAIT_GAUGE
.with_label_values(&[loop_kind.as_static_str()])
.guard();

View File

@@ -16,14 +16,14 @@ use enumset::EnumSet;
use fail::fail_point;
use once_cell::sync::Lazy;
use pageserver_api::{
key::{AUX_FILES_KEY, NON_INHERITED_RANGE},
key::AUX_FILES_KEY,
keyspace::KeySpaceAccum,
models::{
CompactionAlgorithm, DownloadRemoteLayersTaskInfo, DownloadRemoteLayersTaskSpawnRequest,
EvictionPolicy, InMemoryLayerInfo, LayerMapInfo, TimelineState,
},
reltag::BlockNumber,
shard::{ShardIdentity, ShardNumber, TenantShardId},
shard::{ShardIdentity, TenantShardId},
};
use rand::Rng;
use serde_with::serde_as;
@@ -86,7 +86,7 @@ use crate::{
use crate::config::PageServerConf;
use crate::keyspace::{KeyPartitioning, KeySpace};
use crate::metrics::{
GetKind, TimelineMetrics, MATERIALIZED_PAGE_CACHE_HIT, MATERIALIZED_PAGE_CACHE_HIT_DIRECT,
TimelineMetrics, MATERIALIZED_PAGE_CACHE_HIT, MATERIALIZED_PAGE_CACHE_HIT_DIRECT,
};
use crate::pgdatadir_mapping::CalculateLogicalSizeError;
use crate::tenant::config::TenantConfOpt;
@@ -119,8 +119,8 @@ use self::layer_manager::LayerManager;
use self::logical_size::LogicalSize;
use self::walreceiver::{WalReceiver, WalReceiverConf};
use super::config::TenantConf;
use super::secondary::heatmap::{HeatMapLayer, HeatMapTimeline};
use super::{config::TenantConf, storage_layer::VectoredValueReconstructState};
use super::{debug_assert_current_span_has_tenant_and_timeline_id, AttachedTenantConf};
use super::{remote_timeline_client::index::IndexPart, storage_layer::LayerFringe};
use super::{remote_timeline_client::RemoteTimelineClient, storage_layer::ReadableLayer};
@@ -182,16 +182,6 @@ pub(crate) struct AuxFilesState {
pub(crate) n_deltas: usize,
}
/// The relation size cache caches relation sizes at the end of the timeline. It speeds up WAL
/// ingestion considerably, because WAL ingestion needs to check on most records if the record
/// implicitly extends the relation. At startup, `complete_as_of` is initialized to the current end
/// of the timeline (disk_consistent_lsn). It's used on reads of relation sizes to check if the
/// value can be used to also update the cache, see [`Timeline::update_cached_rel_size`].
pub(crate) struct RelSizeCache {
pub(crate) complete_as_of: Lsn,
pub(crate) map: HashMap<RelTag, (Lsn, BlockNumber)>,
}
pub struct Timeline {
conf: &'static PageServerConf,
tenant_conf: Arc<ArcSwap<AttachedTenantConf>>,
@@ -334,7 +324,7 @@ pub struct Timeline {
pub walreceiver: Mutex<Option<WalReceiver>>,
/// Relation size cache
pub(crate) rel_size_cache: RwLock<RelSizeCache>,
pub rel_size_cache: RwLock<HashMap<RelTag, (Lsn, BlockNumber)>>,
download_all_remote_layers_task_info: RwLock<Option<DownloadRemoteLayersTaskInfo>>,
@@ -438,62 +428,6 @@ pub(crate) enum PageReconstructError {
/// An error happened replaying WAL records
#[error(transparent)]
WalRedo(anyhow::Error),
#[error("{0}")]
MissingKey(MissingKeyError),
}
#[derive(Debug)]
pub struct MissingKeyError {
stuck_at_lsn: bool,
key: Key,
shard: ShardNumber,
cont_lsn: Lsn,
request_lsn: Lsn,
ancestor_lsn: Option<Lsn>,
traversal_path: Vec<TraversalPathItem>,
backtrace: Option<std::backtrace::Backtrace>,
}
impl std::fmt::Display for MissingKeyError {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
if self.stuck_at_lsn {
// Records are found in this timeline but no image layer or initial delta record was found.
write!(
f,
"could not find layer with more data for key {} (shard {:?}) at LSN {}, request LSN {}",
self.key, self.shard, self.cont_lsn, self.request_lsn
)?;
if let Some(ref ancestor_lsn) = self.ancestor_lsn {
write!(f, ", ancestor {}", ancestor_lsn)?;
}
} else {
// No records in this timeline.
write!(
f,
"could not find data for key {} (shard {:?}) at LSN {}, for request at LSN {}",
self.key, self.shard, self.cont_lsn, self.request_lsn
)?;
}
if !self.traversal_path.is_empty() {
writeln!(f)?;
}
for (r, c, l) in &self.traversal_path {
writeln!(
f,
"layer traversal: result {:?}, cont_lsn {}, layer: {}",
r, c, l,
)?;
}
if let Some(ref backtrace) = self.backtrace {
write!(f, "\n{}", backtrace)?;
}
Ok(())
}
}
impl PageReconstructError {
@@ -505,7 +439,6 @@ impl PageReconstructError {
AncestorLsnTimeout(_) => false,
Cancelled | AncestorStopping(_) => true,
WalRedo(_) => false,
MissingKey { .. } => false,
}
}
}
@@ -653,19 +586,6 @@ impl From<GetVectoredError> for CreateImageLayersError {
}
}
impl From<GetVectoredError> for PageReconstructError {
fn from(e: GetVectoredError) -> Self {
match e {
GetVectoredError::Cancelled => PageReconstructError::Cancelled,
GetVectoredError::InvalidLsn(_) => PageReconstructError::Other(anyhow!("Invalid LSN")),
err @ GetVectoredError::Oversized(_) => PageReconstructError::Other(err.into()),
err @ GetVectoredError::MissingKey(_) => PageReconstructError::Other(err.into()),
GetVectoredError::GetReadyAncestorError(err) => PageReconstructError::from(err),
GetVectoredError::Other(err) => PageReconstructError::Other(err),
}
}
}
impl From<GetReadyAncestorError> for PageReconstructError {
fn from(e: GetReadyAncestorError) -> Self {
use GetReadyAncestorError::*;
@@ -695,23 +615,6 @@ pub enum GetVectoredImpl {
Vectored,
}
#[derive(
Eq,
PartialEq,
Debug,
Copy,
Clone,
strum_macros::EnumString,
strum_macros::Display,
serde_with::DeserializeFromStr,
serde_with::SerializeDisplay,
)]
#[strum(serialize_all = "kebab-case")]
pub enum GetImpl {
Legacy,
Vectored,
}
pub(crate) enum WaitLsnWaiter<'a> {
Timeline(&'a Timeline),
Tenant,
@@ -773,6 +676,16 @@ impl Timeline {
key: Key,
lsn: Lsn,
ctx: &RequestContext,
) -> Result<Bytes, PageReconstructError> {
self.timeline_get_throttle.throttle(ctx, 1).await;
self.get_impl(key, lsn, ctx).await
}
/// Not subject to [`Self::timeline_get_throttle`].
async fn get_impl(
&self,
key: Key,
lsn: Lsn,
ctx: &RequestContext,
) -> Result<Bytes, PageReconstructError> {
if !lsn.is_valid() {
return Err(PageReconstructError::Other(anyhow::anyhow!("Invalid LSN")));
@@ -783,7 +696,13 @@ impl Timeline {
// page_service.
debug_assert!(!self.shard_identity.is_key_disposable(&key));
self.timeline_get_throttle.throttle(ctx, 1).await;
// XXX: structured stats collection for layer eviction here.
trace!(
"get page request for {}@{} from task kind {:?}",
key,
lsn,
ctx.task_kind()
);
// Check the page cache. We will get back the most recent page with lsn <= `lsn`.
// The cached image can be returned directly if there is no WAL between the cached image
@@ -806,85 +725,12 @@ impl Timeline {
None => None,
};
match self.conf.get_impl {
GetImpl::Legacy => {
let reconstruct_state = ValueReconstructState {
records: Vec::new(),
img: cached_page_img,
};
let mut reconstruct_state = ValueReconstructState {
records: Vec::new(),
img: cached_page_img,
};
self.get_impl(key, lsn, reconstruct_state, ctx).await
}
GetImpl::Vectored => {
let keyspace = KeySpace {
ranges: vec![key..key.next()],
};
// Initialise the reconstruct state for the key with the cache
// entry returned above.
let mut reconstruct_state = ValuesReconstructState::new();
let mut key_state = VectoredValueReconstructState::default();
key_state.img = cached_page_img;
reconstruct_state.keys.insert(key, Ok(key_state));
let vectored_res = self
.get_vectored_impl(keyspace.clone(), lsn, reconstruct_state, ctx)
.await;
if self.conf.validate_vectored_get {
self.validate_get_vectored_impl(&vectored_res, keyspace, lsn, ctx)
.await;
}
let key_value = vectored_res?.pop_first();
match key_value {
Some((got_key, value)) => {
if got_key != key {
error!(
"Expected {}, but singular vectored get returned {}",
key, got_key
);
Err(PageReconstructError::Other(anyhow!(
"Singular vectored get returned wrong key"
)))
} else {
value
}
}
None => {
error!(
"Expected {}, but singular vectored get returned nothing",
key
);
Err(PageReconstructError::Other(anyhow!(
"Singular vectored get did not return a value for {}",
key
)))
}
}
}
}
}
/// Not subject to [`Self::timeline_get_throttle`].
async fn get_impl(
&self,
key: Key,
lsn: Lsn,
mut reconstruct_state: ValueReconstructState,
ctx: &RequestContext,
) -> Result<Bytes, PageReconstructError> {
// XXX: structured stats collection for layer eviction here.
trace!(
"get page request for {}@{} from task kind {:?}",
key,
lsn,
ctx.task_kind()
);
let timer = crate::metrics::GET_RECONSTRUCT_DATA_TIME
.for_get_kind(GetKind::Singular)
.start_timer();
let timer = crate::metrics::GET_RECONSTRUCT_DATA_TIME.start_timer();
let path = self
.get_reconstruct_data(key, lsn, &mut reconstruct_state, ctx)
.await?;
@@ -894,7 +740,7 @@ impl Timeline {
let res = self.reconstruct_value(key, lsn, reconstruct_state).await;
let elapsed = start.elapsed();
crate::metrics::RECONSTRUCT_TIME
.for_get_kind(GetKind::Singular)
.for_result(&res)
.observe(elapsed.as_secs_f64());
if cfg!(feature = "testing") && res.is_err() {
@@ -907,7 +753,7 @@ impl Timeline {
writeln!(
msg,
"- layer traversal: result {res:?}, cont_lsn {cont_lsn}, layer: {}",
layer,
layer(),
)
.expect("string grows")
});
@@ -973,9 +819,7 @@ impl Timeline {
self.get_vectored_sequential_impl(keyspace, lsn, ctx).await
}
GetVectoredImpl::Vectored => {
let vectored_res = self
.get_vectored_impl(keyspace.clone(), lsn, ValuesReconstructState::new(), ctx)
.await;
let vectored_res = self.get_vectored_impl(keyspace.clone(), lsn, ctx).await;
if self.conf.validate_vectored_get {
self.validate_get_vectored_impl(&vectored_res, keyspace, lsn, ctx)
@@ -1021,42 +865,15 @@ impl Timeline {
for range in keyspace.ranges {
let mut key = range.start;
while key != range.end {
let block = self
.get_impl(key, lsn, ValueReconstructState::default(), ctx)
.await;
let block = self.get_impl(key, lsn, ctx).await;
use PageReconstructError::*;
match block {
Err(Cancelled | AncestorStopping(_)) => {
return Err(GetVectoredError::Cancelled)
}
// we only capture stuck_at_lsn=false now until we figure out https://github.com/neondatabase/neon/issues/7380
Err(MissingKey(MissingKeyError {
stuck_at_lsn: false,
..
})) if !NON_INHERITED_RANGE.contains(&key) => {
// The vectored read path handles non inherited keys specially.
// If such a a key cannot be reconstructed from the current timeline,
// the vectored read path returns a key level error as opposed to a top
// level error.
return Err(GetVectoredError::MissingKey(key));
}
Err(Other(err))
if err
.to_string()
.contains("downloading evicted layer file failed") =>
{
return Err(GetVectoredError::Other(err))
}
Err(Other(err))
if err
.chain()
.any(|cause| cause.to_string().contains("layer loading failed")) =>
{
// The intent here is to achieve error parity with the vectored read path.
// When vectored read fails to load a layer it fails the whole read, hence
// we mimic this behaviour here to keep the validation happy.
return Err(GetVectoredError::Other(err));
Err(Other(err)) if err.to_string().contains("could not find data for key") => {
return Err(GetVectoredError::MissingKey(key))
}
_ => {
values.insert(key, block);
@@ -1073,27 +890,14 @@ impl Timeline {
&self,
keyspace: KeySpace,
lsn: Lsn,
mut reconstruct_state: ValuesReconstructState,
ctx: &RequestContext,
) -> Result<BTreeMap<Key, Result<Bytes, PageReconstructError>>, GetVectoredError> {
let get_kind = if keyspace.total_size() == 1 {
GetKind::Singular
} else {
GetKind::Vectored
};
let mut reconstruct_state = ValuesReconstructState::new();
let get_data_timer = crate::metrics::GET_RECONSTRUCT_DATA_TIME
.for_get_kind(get_kind)
.start_timer();
self.get_vectored_reconstruct_data(keyspace, lsn, &mut reconstruct_state, ctx)
.await?;
get_data_timer.stop_and_record();
let reconstruct_timer = crate::metrics::RECONSTRUCT_TIME
.for_get_kind(get_kind)
.start_timer();
let mut results: BTreeMap<Key, Result<Bytes, PageReconstructError>> = BTreeMap::new();
let layers_visited = reconstruct_state.get_layers_visited();
for (key, res) in reconstruct_state.keys {
match res {
Err(err) => {
@@ -1107,13 +911,6 @@ impl Timeline {
}
}
}
reconstruct_timer.stop_and_record();
// Note that this is an approximation. Tracking the exact number of layers visited
// per key requires virtually unbounded memory usage and is inefficient
// (i.e. segment tree tracking each range queried from a layer)
crate::metrics::VEC_READ_NUM_LAYERS_VISITED
.observe(layers_visited as f64 / results.len() as f64);
Ok(results)
}
@@ -1547,7 +1344,7 @@ impl Timeline {
background_jobs_can_start: Option<&completion::Barrier>,
ctx: &RequestContext,
) {
if self.tenant_shard_id.is_shard_zero() {
if self.tenant_shard_id.is_zero() {
// Logical size is only maintained accurately on shard zero.
self.spawn_initial_logical_size_computation_task(ctx);
}
@@ -1871,15 +1668,6 @@ const REPARTITION_FREQ_IN_CHECKPOINT_DISTANCE: u64 = 10;
// Private functions
impl Timeline {
#[allow(dead_code)]
pub(crate) fn get_switch_to_aux_file_v2(&self) -> bool {
let tenant_conf = self.tenant_conf.load();
tenant_conf
.tenant_conf
.switch_to_aux_file_v2
.unwrap_or(self.conf.default_tenant_conf.switch_to_aux_file_v2)
}
pub(crate) fn get_lazy_slru_download(&self) -> bool {
let tenant_conf = self.tenant_conf.load();
tenant_conf
@@ -2104,10 +1892,7 @@ impl Timeline {
last_image_layer_creation_check_at: AtomicLsn::new(0),
last_received_wal: Mutex::new(None),
rel_size_cache: RwLock::new(RelSizeCache {
complete_as_of: disk_consistent_lsn,
map: HashMap::new(),
}),
rel_size_cache: RwLock::new(HashMap::new()),
download_all_remote_layers_task_info: RwLock::new(None),
@@ -2452,7 +2237,7 @@ impl Timeline {
priority: GetLogicalSizePriority,
ctx: &RequestContext,
) -> logical_size::CurrentLogicalSize {
if !self.tenant_shard_id.is_shard_zero() {
if !self.tenant_shard_id.is_zero() {
// Logical size is only accurately maintained on shard zero: when called elsewhere, for example
// when HTTP API is serving a GET for timeline zero, return zero
return logical_size::CurrentLogicalSize::Approximate(logical_size::Approximate::zero());
@@ -2748,7 +2533,7 @@ impl Timeline {
crate::span::debug_assert_current_span_has_tenant_and_timeline_id();
// We should never be calculating logical sizes on shard !=0, because these shards do not have
// accurate relation sizes, and they do not emit consumption metrics.
debug_assert!(self.tenant_shard_id.is_shard_zero());
debug_assert!(self.tenant_shard_id.is_zero());
let guard = self
.gate
@@ -2907,7 +2692,7 @@ impl Timeline {
}
}
type TraversalId = Arc<str>;
type TraversalId = String;
trait TraversalLayerExt {
fn traversal_id(&self) -> TraversalId;
@@ -2915,13 +2700,13 @@ trait TraversalLayerExt {
impl TraversalLayerExt for Layer {
fn traversal_id(&self) -> TraversalId {
Arc::clone(self.local_path_str())
self.local_path().to_string()
}
}
impl TraversalLayerExt for Arc<InMemoryLayer> {
fn traversal_id(&self) -> TraversalId {
Arc::clone(self.local_path_str())
format!("timeline {} in-memory {self}", self.get_timeline_id())
}
}
@@ -2950,7 +2735,7 @@ impl Timeline {
let mut timeline = self;
let mut read_count = scopeguard::guard(0, |cnt| {
crate::metrics::READ_NUM_LAYERS_VISITED.observe(cnt as f64)
crate::metrics::READ_NUM_FS_LAYERS.observe(cnt as f64)
});
// For debugging purposes, collect the path of layers that we traversed
@@ -2990,35 +2775,32 @@ impl Timeline {
if prev <= cont_lsn {
// Didn't make any progress in last iteration. Error out to avoid
// getting stuck in the loop.
return Err(PageReconstructError::MissingKey(MissingKeyError {
stuck_at_lsn: true,
return Err(layer_traversal_error(format!(
"could not find layer with more data for key {} at LSN {}, request LSN {}, ancestor {}",
key,
shard: self.shard_identity.get_shard_number(&key),
cont_lsn: Lsn(cont_lsn.0 - 1),
Lsn(cont_lsn.0 - 1),
request_lsn,
ancestor_lsn: Some(timeline.ancestor_lsn),
traversal_path,
backtrace: None,
}));
timeline.ancestor_lsn
), traversal_path));
}
}
prev_lsn = Some(cont_lsn);
}
ValueReconstructResult::Missing => {
return Err(PageReconstructError::MissingKey(MissingKeyError {
stuck_at_lsn: false,
key,
shard: self.shard_identity.get_shard_number(&key),
cont_lsn,
request_lsn,
ancestor_lsn: None,
traversal_path,
backtrace: if cfg!(test) {
Some(std::backtrace::Backtrace::force_capture())
return Err(layer_traversal_error(
if cfg!(test) {
format!(
"could not find data for key {} (shard {:?}) at LSN {}, for request at LSN {}\n{}",
key, self.shard_identity.get_shard_number(&key), cont_lsn, request_lsn, std::backtrace::Backtrace::force_capture(),
)
} else {
None
format!(
"could not find data for key {} (shard {:?}) at LSN {}, for request at LSN {}",
key, self.shard_identity.get_shard_number(&key), cont_lsn, request_lsn
)
},
}));
traversal_path,
));
}
}
@@ -3065,8 +2847,12 @@ impl Timeline {
Err(e) => return Err(PageReconstructError::from(e)),
};
cont_lsn = lsn_floor;
*read_count += 1;
traversal_path.push((result, cont_lsn, open_layer.traversal_id()));
// metrics: open_layer does not count as fs access, so we are not updating `read_count`
traversal_path.push((
result,
cont_lsn,
Box::new(move || open_layer.traversal_id()),
));
continue 'outer;
}
}
@@ -3092,8 +2878,12 @@ impl Timeline {
Err(e) => return Err(PageReconstructError::from(e)),
};
cont_lsn = lsn_floor;
*read_count += 1;
traversal_path.push((result, cont_lsn, frozen_layer.traversal_id()));
// metrics: open_layer does not count as fs access, so we are not updating `read_count`
traversal_path.push((
result,
cont_lsn,
Box::new(move || frozen_layer.traversal_id()),
));
continue 'outer;
}
}
@@ -3114,7 +2904,14 @@ impl Timeline {
};
cont_lsn = lsn_floor;
*read_count += 1;
traversal_path.push((result, cont_lsn, layer.traversal_id()));
traversal_path.push((
result,
cont_lsn,
Box::new({
let layer = layer.to_owned();
move || layer.traversal_id()
}),
));
continue 'outer;
} else if timeline.ancestor_timeline.is_some() {
// Nothing on this timeline. Traverse to parent
@@ -3167,47 +2964,11 @@ impl Timeline {
.await?;
keyspace.remove_overlapping_with(&completed);
// Do not descend into the ancestor timeline for aux files.
// We don't return a blanket [`GetVectoredError::MissingKey`] to avoid
// stalling compaction.
// TODO(chi): this will need to be updated for aux files v2 storage
if keyspace.overlaps(&NON_INHERITED_RANGE) {
let removed = keyspace.remove_overlapping_with(&KeySpace {
ranges: vec![NON_INHERITED_RANGE],
});
for range in removed.ranges {
let mut key = range.start;
while key < range.end {
reconstruct_state.on_key_error(
key,
PageReconstructError::MissingKey(MissingKeyError {
stuck_at_lsn: false,
key,
shard: self.shard_identity.get_shard_number(&key),
cont_lsn,
request_lsn,
ancestor_lsn: None,
traversal_path: Vec::default(),
backtrace: if cfg!(test) {
Some(std::backtrace::Backtrace::force_capture())
} else {
None
},
}),
);
key = key.next();
}
}
}
if keyspace.total_size() == 0 || timeline.ancestor_timeline.is_none() {
break;
}
// Take the min to avoid reconstructing a page with data newer than request Lsn.
cont_lsn = std::cmp::min(Lsn(request_lsn.0 + 1), Lsn(timeline.ancestor_lsn.0 + 1));
cont_lsn = Lsn(timeline.ancestor_lsn.0 + 1);
timeline_owned = timeline
.get_ready_ancestor_timeline(ctx)
.await
@@ -3257,62 +3018,56 @@ impl Timeline {
unmapped_keyspace.remove_overlapping_with(&keys_done_last_step);
completed_keyspace.merge(&keys_done_last_step);
// Do not descent any further if the last layer we visited
// completed all keys in the keyspace it inspected. This is not
// required for correctness, but avoids visiting extra layers
// which turns out to be a perf bottleneck in some cases.
if !unmapped_keyspace.is_empty() {
let guard = timeline.layers.read().await;
let layers = guard.layer_map();
let guard = timeline.layers.read().await;
let layers = guard.layer_map();
let in_memory_layer = layers.find_in_memory_layer(|l| {
let start_lsn = l.get_lsn_range().start;
cont_lsn > start_lsn
});
let in_memory_layer = layers.find_in_memory_layer(|l| {
let start_lsn = l.get_lsn_range().start;
cont_lsn > start_lsn
});
match in_memory_layer {
Some(l) => {
let lsn_range = l.get_lsn_range().start..cont_lsn;
fringe.update(
ReadableLayer::InMemoryLayer(l),
unmapped_keyspace.clone(),
lsn_range,
);
}
None => {
for range in unmapped_keyspace.ranges.iter() {
let results = layers.range_search(range.clone(), cont_lsn);
match in_memory_layer {
Some(l) => {
let lsn_range = l.get_lsn_range().start..cont_lsn;
fringe.update(
ReadableLayer::InMemoryLayer(l),
unmapped_keyspace.clone(),
lsn_range,
);
}
None => {
for range in unmapped_keyspace.ranges.iter() {
let results = layers.range_search(range.clone(), cont_lsn);
results
.found
.into_iter()
.map(|(SearchResult { layer, lsn_floor }, keyspace_accum)| {
(
ReadableLayer::PersistentLayer(guard.get_from_desc(&layer)),
keyspace_accum.to_keyspace(),
lsn_floor..cont_lsn,
)
})
.for_each(|(layer, keyspace, lsn_range)| {
fringe.update(layer, keyspace, lsn_range)
});
}
results
.found
.into_iter()
.map(|(SearchResult { layer, lsn_floor }, keyspace_accum)| {
(
ReadableLayer::PersistentLayer(guard.get_from_desc(&layer)),
keyspace_accum.to_keyspace(),
lsn_floor..cont_lsn,
)
})
.for_each(|(layer, keyspace, lsn_range)| {
fringe.update(layer, keyspace, lsn_range)
});
}
}
// It's safe to drop the layer map lock after planning the next round of reads.
// The fringe keeps readable handles for the layers which are safe to read even
// if layers were compacted or flushed.
//
// The more interesting consideration is: "Why is the read algorithm still correct
// if the layer map changes while it is operating?". Doing a vectored read on a
// timeline boils down to pushing an imaginary lsn boundary downwards for each range
// covered by the read. The layer map tells us how to move the lsn downwards for a
// range at *a particular point in time*. It is fine for the answer to be different
// at two different time points.
drop(guard);
}
// It's safe to drop the layer map lock after planning the next round of reads.
// The fringe keeps readable handles for the layers which are safe to read even
// if layers were compacted or flushed.
//
// The more interesting consideration is: "Why is the read algorithm still correct
// if the layer map changes while it is operating?". Doing a vectored read on a
// timeline boils down to pushing an imaginary lsn boundary downwards for each range
// covered by the read. The layer map tells us how to move the lsn downwards for a
// range at *a particular point in time*. It is fine for the answer to be different
// at two different time points.
drop(guard);
if let Some((layer_to_read, keyspace_to_read, lsn_range)) = fringe.next_layer() {
let next_cont_lsn = lsn_range.start;
layer_to_read
@@ -3326,8 +3081,6 @@ impl Timeline {
unmapped_keyspace = keyspace_to_read;
cont_lsn = next_cont_lsn;
reconstruct_state.on_layer_visited();
} else {
break;
}
@@ -3771,7 +3524,7 @@ impl Timeline {
&self,
disk_consistent_lsn: Lsn,
layers_to_upload: impl IntoIterator<Item = ResidentLayer>,
) -> anyhow::Result<()> {
) -> anyhow::Result<TimelineMetadata> {
// We can only save a valid 'prev_record_lsn' value on disk if we
// flushed *all* in-memory changes to disk. We only track
// 'prev_record_lsn' in memory for the latest processed record, so we
@@ -3788,10 +3541,19 @@ impl Timeline {
None
};
let update = crate::tenant::metadata::MetadataUpdate::new(
let ancestor_timeline_id = self
.ancestor_timeline
.as_ref()
.map(|ancestor| ancestor.timeline_id);
let metadata = TimelineMetadata::new(
disk_consistent_lsn,
ondisk_prev_record_lsn,
ancestor_timeline_id,
self.ancestor_lsn,
*self.latest_gc_cutoff_lsn.read(),
self.initdb_lsn,
self.pg_version,
);
fail_point!("checkpoint-before-saving-metadata", |x| bail!(
@@ -3803,10 +3565,10 @@ impl Timeline {
for layer in layers_to_upload {
remote_client.schedule_layer_file_upload(layer)?;
}
remote_client.schedule_index_upload_for_metadata_update(&update)?;
remote_client.schedule_index_upload_for_metadata_update(&metadata)?;
}
Ok(())
Ok(metadata)
}
pub(crate) async fn preserve_initdb_archive(&self) -> anyhow::Result<()> {
@@ -3915,6 +3677,24 @@ impl Timeline {
// Is it time to create a new image layer for the given partition?
async fn time_for_new_image_layer(&self, partition: &KeySpace, lsn: Lsn) -> bool {
let last = self.last_image_layer_creation_check_at.load();
if lsn != Lsn(0) {
let distance = lsn
.checked_sub(last)
.expect("Attempt to compact with LSN going backwards");
let min_distance = self.get_image_layer_creation_check_threshold() as u64
* self.get_checkpoint_distance();
// Skip the expensive delta layer counting below if we've not ingested
// sufficient WAL since the last check.
if distance.0 < min_distance {
return false;
}
}
self.last_image_layer_creation_check_at.store(lsn);
let threshold = self.get_image_creation_threshold();
let guard = self.layers.read().await;
@@ -3986,37 +3766,9 @@ impl Timeline {
// image layers <100000000..100000099> and <200000000..200000199> are not completely covering it.
let mut start = Key::MIN;
let check_for_image_layers = {
let last_checks_at = self.last_image_layer_creation_check_at.load();
let distance = lsn
.checked_sub(last_checks_at)
.expect("Attempt to compact with LSN going backwards");
let min_distance = self.get_image_layer_creation_check_threshold() as u64
* self.get_checkpoint_distance();
// Skip the expensive delta layer counting if this timeline has not ingested sufficient
// WAL since the last check.
distance.0 >= min_distance
};
if check_for_image_layers {
self.last_image_layer_creation_check_at.store(lsn);
}
for partition in partitioning.parts.iter() {
let img_range = start..partition.ranges.last().unwrap().end;
let do_it = if force {
true
} else if check_for_image_layers {
// [`Self::time_for_new_image_layer`] is CPU expensive,
// so skip if we've not collected enough WAL since the last time
self.time_for_new_image_layer(partition, lsn).await
} else {
false
};
if !do_it {
if !force && !self.time_for_new_image_layer(partition, lsn).await {
start = img_range.end;
continue;
}
@@ -4345,12 +4097,6 @@ impl Timeline {
cancel: &CancellationToken,
ctx: &RequestContext,
) -> anyhow::Result<()> {
let _timer = self
.metrics
.update_gc_info_histo
.start_timer()
.record_on_drop();
// First, calculate pitr_cutoff_timestamp and then convert it to LSN.
//
// Some unit tests depend on garbage-collection working even when
@@ -4396,8 +4142,9 @@ impl Timeline {
*self.get_latest_gc_cutoff_lsn()
}
} else {
// No time-based retention was configured. Interpret this as "keep no history".
self.get_last_record_lsn()
// No time-based retention was configured. Set time-based cutoff to
// same as LSN based.
cutoff_horizon
};
// Grab the lock and update the values
@@ -4917,7 +4664,35 @@ impl Timeline {
}
}
type TraversalPathItem = (ValueReconstructResult, Lsn, TraversalId);
type TraversalPathItem = (
ValueReconstructResult,
Lsn,
Box<dyn Send + FnOnce() -> TraversalId>,
);
/// Helper function for get_reconstruct_data() to add the path of layers traversed
/// to an error, as anyhow context information.
fn layer_traversal_error(msg: String, path: Vec<TraversalPathItem>) -> PageReconstructError {
// We want the original 'msg' to be the outermost context. The outermost context
// is the most high-level information, which also gets propagated to the client.
let mut msg_iter = path
.into_iter()
.map(|(r, c, l)| {
format!(
"layer traversal: result {:?}, cont_lsn {}, layer: {}",
r,
c,
l(),
)
})
.chain(std::iter::once(msg));
// Construct initial message from the first traversed layer
let err = anyhow!(msg_iter.next().unwrap());
// Append all subsequent traversals, and the error message 'msg', as contexts.
let msg = msg_iter.fold(err, |err, msg| err.context(msg));
PageReconstructError::from(msg)
}
struct TimelineWriterState {
open_layer: Arc<InMemoryLayer>,

View File

@@ -188,10 +188,24 @@ impl Timeline {
) -> ControlFlow<()> {
let now = SystemTime::now();
let permit = self.acquire_imitation_permit(cancel, ctx).await?;
let acquire_permit = crate::tenant::tasks::concurrent_background_tasks_rate_limit_permit(
BackgroundLoopKind::Eviction,
ctx,
);
self.imitate_layer_accesses(tenant, p, cancel, gate, permit, ctx)
.await?;
let _permit = tokio::select! {
permit = acquire_permit => permit,
_ = cancel.cancelled() => return ControlFlow::Break(()),
_ = self.cancel.cancelled() => return ControlFlow::Break(()),
};
match self
.imitate_layer_accesses(tenant, p, cancel, gate, ctx)
.await
{
ControlFlow::Break(()) => return ControlFlow::Break(()),
ControlFlow::Continue(()) => (),
}
#[derive(Debug, Default)]
struct EvictionStats {
@@ -316,27 +330,19 @@ impl Timeline {
gate: &GateGuard,
ctx: &RequestContext,
) -> ControlFlow<()> {
let permit = self.acquire_imitation_permit(cancel, ctx).await?;
self.imitate_layer_accesses(tenant, p, cancel, gate, permit, ctx)
.await
}
async fn acquire_imitation_permit(
&self,
cancel: &CancellationToken,
ctx: &RequestContext,
) -> ControlFlow<(), tokio::sync::SemaphorePermit<'static>> {
let acquire_permit = crate::tenant::tasks::concurrent_background_tasks_rate_limit_permit(
BackgroundLoopKind::Eviction,
ctx,
);
tokio::select! {
permit = acquire_permit => ControlFlow::Continue(permit),
_ = cancel.cancelled() => ControlFlow::Break(()),
_ = self.cancel.cancelled() => ControlFlow::Break(()),
}
let _permit = tokio::select! {
permit = acquire_permit => permit,
_ = cancel.cancelled() => return ControlFlow::Break(()),
_ = self.cancel.cancelled() => return ControlFlow::Break(()),
};
self.imitate_layer_accesses(tenant, p, cancel, gate, ctx)
.await
}
/// If we evict layers but keep cached values derived from those layers, then
@@ -370,10 +376,9 @@ impl Timeline {
p: &EvictionPolicyLayerAccessThreshold,
cancel: &CancellationToken,
gate: &GateGuard,
permit: tokio::sync::SemaphorePermit<'static>,
ctx: &RequestContext,
) -> ControlFlow<()> {
if !self.tenant_shard_id.is_shard_zero() {
if !self.tenant_shard_id.is_zero() {
// Shards !=0 do not maintain accurate relation sizes, and do not need to calculate logical size
// for consumption metrics (consumption metrics are only sent from shard 0). We may therefore
// skip imitating logical size accesses for eviction purposes.
@@ -403,28 +408,7 @@ impl Timeline {
// Make one of the tenant's timelines draw the short straw and run the calculation.
// The others wait until the calculation is done so that they take into account the
// imitated accesses that the winner made.
let (mut state, _permit) = {
if let Ok(locked) = tenant.eviction_task_tenant_state.try_lock() {
(locked, permit)
} else {
// we might need to wait for a long time here in case of pathological synthetic
// size calculation performance
drop(permit);
let locked = tokio::select! {
locked = tenant.eviction_task_tenant_state.lock() => locked,
_ = self.cancel.cancelled() => {
return ControlFlow::Break(())
},
_ = cancel.cancelled() => {
return ControlFlow::Break(())
}
};
// then reacquire -- this will be bad if there is a lot of traffic, but because we
// released the permit, the overall latency will be much better.
let permit = self.acquire_imitation_permit(cancel, ctx).await?;
(locked, permit)
}
};
let mut state = tenant.eviction_task_tenant_state.lock().await;
match state.last_layer_access_imitation {
Some(ts) if ts.elapsed() < inter_imitate_period => { /* no need to run */ }
_ => {

View File

@@ -427,7 +427,7 @@ pub(super) async fn handle_walreceiver_connection(
// Send the replication feedback message.
// Regular standby_status_update fields are put into this message.
let current_timeline_size = if timeline.tenant_shard_id.is_shard_zero() {
let current_timeline_size = if timeline.tenant_shard_id.is_zero() {
timeline
.get_current_logical_size(
crate::tenant::timeline::GetLogicalSizePriority::User,

View File

@@ -61,18 +61,18 @@ pub struct VectoredRead {
}
impl VectoredRead {
pub(crate) fn size(&self) -> usize {
pub fn size(&self) -> usize {
(self.end - self.start) as usize
}
}
#[derive(Eq, PartialEq)]
pub(crate) enum VectoredReadExtended {
enum VectoredReadExtended {
Yes,
No,
}
pub(crate) struct VectoredReadBuilder {
struct VectoredReadBuilder {
start: u64,
end: u64,
blobs_at: VecMap<u64, BlobMeta>,
@@ -80,17 +80,7 @@ pub(crate) struct VectoredReadBuilder {
}
impl VectoredReadBuilder {
/// Start building a new vectored read.
///
/// Note that by design, this does not check against reading more than `max_read_size` to
/// support reading larger blobs than the configuration value. The builder will be single use
/// however after that.
pub(crate) fn new(
start_offset: u64,
end_offset: u64,
meta: BlobMeta,
max_read_size: usize,
) -> Self {
fn new(start_offset: u64, end_offset: u64, meta: BlobMeta, max_read_size: usize) -> Self {
let mut blobs_at = VecMap::default();
blobs_at
.append(start_offset, meta)
@@ -107,8 +97,7 @@ impl VectoredReadBuilder {
/// Attempt to extend the current read with a new blob if the start
/// offset matches with the current end of the vectored read
/// and the resuting size is below the max read size
pub(crate) fn extend(&mut self, start: u64, end: u64, meta: BlobMeta) -> VectoredReadExtended {
tracing::trace!(start, end, "trying to extend");
fn extend(&mut self, start: u64, end: u64, meta: BlobMeta) -> VectoredReadExtended {
let size = (end - start) as usize;
if self.end == start && self.size() + size <= self.max_read_size {
self.end = end;
@@ -122,11 +111,11 @@ impl VectoredReadBuilder {
VectoredReadExtended::No
}
pub(crate) fn size(&self) -> usize {
fn size(&self) -> usize {
(self.end - self.start) as usize
}
pub(crate) fn build(self) -> VectoredRead {
fn build(self) -> VectoredRead {
VectoredRead {
start: self.start,
end: self.end,

View File

@@ -32,11 +32,11 @@ pub use io_engine::feature_test as io_engine_feature_test;
pub use io_engine::FeatureTestResult as IoEngineFeatureTestResult;
mod metadata;
mod open_options;
use self::owned_buffers_io::write::OwnedAsyncWriter;
pub(crate) use io_engine::IoEngineKind;
pub(crate) use metadata::Metadata;
pub(crate) use open_options::*;
#[cfg_attr(not(target_os = "linux"), allow(dead_code))]
pub(crate) mod owned_buffers_io {
//! Abstractions for IO with owned buffers.
//!
@@ -1083,17 +1083,6 @@ impl Drop for VirtualFile {
}
}
impl OwnedAsyncWriter for VirtualFile {
#[inline(always)]
async fn write_all<B: BoundedBuf<Buf = Buf>, Buf: IoBuf + Send>(
&mut self,
buf: B,
) -> std::io::Result<(usize, B::Buf)> {
let (buf, res) = VirtualFile::write_all(self, buf).await;
res.map(move |v| (v, buf))
}
}
impl OpenFiles {
fn new(num_slots: usize) -> OpenFiles {
let mut slots = Box::new(Vec::with_capacity(num_slots));

View File

@@ -1,45 +1,33 @@
use crate::virtual_file::owned_buffers_io::write::OwnedAsyncWriter;
use crate::virtual_file::{owned_buffers_io::write::OwnedAsyncWriter, VirtualFile};
use tokio_epoll_uring::{BoundedBuf, IoBuf};
pub struct Writer<W> {
dst: W,
pub struct Writer {
dst: VirtualFile,
bytes_amount: u64,
}
impl<W> Writer<W> {
pub fn new(dst: W) -> Self {
impl Writer {
pub fn new(dst: VirtualFile) -> Self {
Self {
dst,
bytes_amount: 0,
}
}
pub fn bytes_written(&self) -> u64 {
self.bytes_amount
}
pub fn as_inner(&self) -> &W {
&self.dst
}
/// Returns the wrapped `VirtualFile` object as well as the number
/// of bytes that were written to it through this object.
#[cfg_attr(target_os = "macos", allow(dead_code))]
pub fn into_inner(self) -> (u64, W) {
pub fn into_inner(self) -> (u64, VirtualFile) {
(self.bytes_amount, self.dst)
}
}
impl<W> OwnedAsyncWriter for Writer<W>
where
W: OwnedAsyncWriter,
{
impl OwnedAsyncWriter for Writer {
#[inline(always)]
async fn write_all<B: BoundedBuf<Buf = Buf>, Buf: IoBuf + Send>(
&mut self,
buf: B,
) -> std::io::Result<(usize, B::Buf)> {
let (nwritten, buf) = self.dst.write_all(buf).await?;
let (buf, res) = self.dst.write_all(buf).await;
let nwritten = res?;
self.bytes_amount += u64::try_from(nwritten).unwrap();
Ok((nwritten, buf))
}

View File

@@ -10,14 +10,14 @@ pub trait OwnedAsyncWriter {
) -> std::io::Result<(usize, B::Buf)>;
}
/// A wrapper aorund an [`OwnedAsyncWriter`] that uses a [`Buffer`] to batch
/// small writes into larger writes of size [`Buffer::cap`].
/// A wrapper aorund an [`OwnedAsyncWriter`] that batches smaller writers
/// into `BUFFER_SIZE`-sized writes.
///
/// # Passthrough Of Large Writers
///
/// Calls to [`BufferedWriter::write_buffered`] that are larger than [`Buffer::cap`]
/// cause the internal buffer to be flushed prematurely so that the large
/// buffered write is passed through to the underlying [`OwnedAsyncWriter`].
/// Buffered writes larger than the `BUFFER_SIZE` cause the internal
/// buffer to be flushed, even if it is not full yet. Then, the large
/// buffered write is passed through to the unerlying [`OwnedAsyncWriter`].
///
/// This pass-through is generally beneficial for throughput, but if
/// the storage backend of the [`OwnedAsyncWriter`] is a shared resource,
@@ -25,38 +25,27 @@ pub trait OwnedAsyncWriter {
///
/// In such cases, a different implementation that always buffers in memory
/// may be preferable.
pub struct BufferedWriter<B, W> {
pub struct BufferedWriter<const BUFFER_SIZE: usize, W> {
writer: W,
/// invariant: always remains Some(buf) except
/// - while IO is ongoing => goes back to Some() once the IO completed successfully
/// - after an IO error => stays `None` forever
/// In these exceptional cases, it's `None`.
buf: Option<B>,
// invariant: always remains Some(buf)
// with buf.capacity() == BUFFER_SIZE except
// - while IO is ongoing => goes back to Some() once the IO completed successfully
// - after an IO error => stays `None` forever
// In these exceptional cases, it's `None`.
buf: Option<BytesMut>,
}
impl<B, Buf, W> BufferedWriter<B, W>
impl<const BUFFER_SIZE: usize, W> BufferedWriter<BUFFER_SIZE, W>
where
B: Buffer<IoBuf = Buf> + Send,
Buf: IoBuf + Send,
W: OwnedAsyncWriter,
{
pub fn new(writer: W, buf: B) -> Self {
pub fn new(writer: W) -> Self {
Self {
writer,
buf: Some(buf),
buf: Some(BytesMut::with_capacity(BUFFER_SIZE)),
}
}
pub fn as_inner(&self) -> &W {
&self.writer
}
/// Panics if used after any of the write paths returned an error
pub fn inspect_buffer(&self) -> &B {
self.buf()
}
#[cfg_attr(target_os = "macos", allow(dead_code))]
pub async fn flush_and_into_inner(mut self) -> std::io::Result<W> {
self.flush().await?;
let Self { buf, writer } = self;
@@ -64,144 +53,61 @@ where
Ok(writer)
}
#[inline(always)]
fn buf(&self) -> &B {
self.buf
.as_ref()
.expect("must not use after we returned an error")
}
#[cfg_attr(target_os = "macos", allow(dead_code))]
pub async fn write_buffered<S: IoBuf>(&mut self, chunk: Slice<S>) -> std::io::Result<(usize, S)>
pub async fn write_buffered<B: IoBuf>(&mut self, chunk: Slice<B>) -> std::io::Result<()>
where
S: IoBuf + Send,
B: IoBuf + Send,
{
let chunk_len = chunk.len();
// avoid memcpy for the middle of the chunk
if chunk.len() >= self.buf().cap() {
if chunk.len() >= BUFFER_SIZE {
self.flush().await?;
// do a big write, bypassing `buf`
assert_eq!(
self.buf
.as_ref()
.expect("must not use after an error")
.pending(),
.len(),
0
);
let chunk_len = chunk.len();
let (nwritten, chunk) = self.writer.write_all(chunk).await?;
assert_eq!(nwritten, chunk_len);
return Ok((nwritten, chunk));
drop(chunk);
return Ok(());
}
// in-memory copy the < BUFFER_SIZED tail of the chunk
assert!(chunk.len() < self.buf().cap());
let mut slice = &chunk[..];
while !slice.is_empty() {
let buf = self.buf.as_mut().expect("must not use after an error");
let need = buf.cap() - buf.pending();
let have = slice.len();
let n = std::cmp::min(need, have);
buf.extend_from_slice(&slice[..n]);
slice = &slice[n..];
if buf.pending() >= buf.cap() {
assert_eq!(buf.pending(), buf.cap());
self.flush().await?;
}
}
assert!(slice.is_empty(), "by now we should have drained the chunk");
Ok((chunk_len, chunk.into_inner()))
}
/// Strictly less performant variant of [`Self::write_buffered`] that allows writing borrowed data.
///
/// It is less performant because we always have to copy the borrowed data into the internal buffer
/// before we can do the IO. The [`Self::write_buffered`] can avoid this, which is more performant
/// for large writes.
pub async fn write_buffered_borrowed(&mut self, mut chunk: &[u8]) -> std::io::Result<usize> {
let chunk_len = chunk.len();
assert!(chunk.len() < BUFFER_SIZE);
let mut chunk = &chunk[..];
while !chunk.is_empty() {
let buf = self.buf.as_mut().expect("must not use after an error");
let need = buf.cap() - buf.pending();
let need = BUFFER_SIZE - buf.len();
let have = chunk.len();
let n = std::cmp::min(need, have);
buf.extend_from_slice(&chunk[..n]);
chunk = &chunk[n..];
if buf.pending() >= buf.cap() {
assert_eq!(buf.pending(), buf.cap());
if buf.len() >= BUFFER_SIZE {
assert_eq!(buf.len(), BUFFER_SIZE);
self.flush().await?;
}
}
Ok(chunk_len)
assert!(chunk.is_empty(), "by now we should have drained the chunk");
Ok(())
}
async fn flush(&mut self) -> std::io::Result<()> {
let buf = self.buf.take().expect("must not use after an error");
let buf_len = buf.pending();
if buf_len == 0 {
if buf.is_empty() {
self.buf = Some(buf);
return Ok(());
return std::io::Result::Ok(());
}
let (nwritten, io_buf) = self.writer.write_all(buf.flush()).await?;
let buf_len = buf.len();
let (nwritten, mut buf) = self.writer.write_all(buf).await?;
assert_eq!(nwritten, buf_len);
self.buf = Some(Buffer::reuse_after_flush(io_buf));
buf.clear();
self.buf = Some(buf);
Ok(())
}
}
/// A [`Buffer`] is used by [`BufferedWriter`] to batch smaller writes into larger ones.
pub trait Buffer {
type IoBuf: IoBuf;
/// Capacity of the buffer. Must not change over the lifetime `self`.`
fn cap(&self) -> usize;
/// Add data to the buffer.
/// Panics if there is not enough room to accomodate `other`'s content, i.e.,
/// panics if `other.len() > self.cap() - self.pending()`.
fn extend_from_slice(&mut self, other: &[u8]);
/// Number of bytes in the buffer.
fn pending(&self) -> usize;
/// Turns `self` into a [`tokio_epoll_uring::Slice`] of the pending data
/// so we can use [`tokio_epoll_uring`] to write it to disk.
fn flush(self) -> Slice<Self::IoBuf>;
/// After the write to disk is done and we have gotten back the slice,
/// [`BufferedWriter`] uses this method to re-use the io buffer.
fn reuse_after_flush(iobuf: Self::IoBuf) -> Self;
}
impl Buffer for BytesMut {
type IoBuf = BytesMut;
#[inline(always)]
fn cap(&self) -> usize {
self.capacity()
}
fn extend_from_slice(&mut self, other: &[u8]) {
BytesMut::extend_from_slice(self, other)
}
#[inline(always)]
fn pending(&self) -> usize {
self.len()
}
fn flush(self) -> Slice<BytesMut> {
if self.is_empty() {
return self.slice_full();
}
let len = self.len();
self.slice(0..len)
}
fn reuse_after_flush(mut iobuf: BytesMut) -> Self {
iobuf.clear();
iobuf
}
}
impl OwnedAsyncWriter for Vec<u8> {
async fn write_all<B: BoundedBuf<Buf = Buf>, Buf: IoBuf + Send>(
&mut self,
@@ -219,8 +125,6 @@ impl OwnedAsyncWriter for Vec<u8> {
#[cfg(test)]
mod tests {
use bytes::BytesMut;
use super::*;
#[derive(Default)]
@@ -254,7 +158,7 @@ mod tests {
#[tokio::test]
async fn test_buffered_writes_only() -> std::io::Result<()> {
let recorder = RecorderWriter::default();
let mut writer = BufferedWriter::new(recorder, BytesMut::with_capacity(2));
let mut writer = BufferedWriter::<2, _>::new(recorder);
write!(writer, b"a");
write!(writer, b"b");
write!(writer, b"c");
@@ -271,7 +175,7 @@ mod tests {
#[tokio::test]
async fn test_passthrough_writes_only() -> std::io::Result<()> {
let recorder = RecorderWriter::default();
let mut writer = BufferedWriter::new(recorder, BytesMut::with_capacity(2));
let mut writer = BufferedWriter::<2, _>::new(recorder);
write!(writer, b"abc");
write!(writer, b"de");
write!(writer, b"");
@@ -287,7 +191,7 @@ mod tests {
#[tokio::test]
async fn test_passthrough_write_with_nonempty_buffer() -> std::io::Result<()> {
let recorder = RecorderWriter::default();
let mut writer = BufferedWriter::new(recorder, BytesMut::with_capacity(2));
let mut writer = BufferedWriter::<2, _>::new(recorder);
write!(writer, b"a");
write!(writer, b"bc");
write!(writer, b"d");
@@ -299,31 +203,4 @@ mod tests {
);
Ok(())
}
#[tokio::test]
async fn test_write_all_borrowed_always_goes_through_buffer() -> std::io::Result<()> {
let recorder = RecorderWriter::default();
let mut writer = BufferedWriter::new(recorder, BytesMut::with_capacity(2));
writer.write_buffered_borrowed(b"abc").await?;
writer.write_buffered_borrowed(b"d").await?;
writer.write_buffered_borrowed(b"e").await?;
writer.write_buffered_borrowed(b"fg").await?;
writer.write_buffered_borrowed(b"hi").await?;
writer.write_buffered_borrowed(b"j").await?;
writer.write_buffered_borrowed(b"klmno").await?;
let recorder = writer.flush_and_into_inner().await?;
assert_eq!(
recorder.writes,
{
let expect: &[&[u8]] = &[b"ab", b"cd", b"ef", b"gh", b"ij", b"kl", b"mn", b"o"];
expect
}
.iter()
.map(|v| v[..].to_vec())
.collect::<Vec<_>>()
);
Ok(())
}
}

View File

@@ -403,7 +403,7 @@ impl WalIngest {
);
if !key_is_local {
if self.shard.is_shard_zero() {
if self.shard.is_zero() {
// Shard 0 tracks relation sizes. Although we will not store this block, we will observe
// its blkno in case it implicitly extends a relation.
self.observe_decoded_block(modification, blk, ctx).await?;
@@ -1034,7 +1034,7 @@ impl WalIngest {
let nblocks = modification
.tline
.get_rel_size(src_rel, Version::Modified(modification), ctx)
.get_rel_size(src_rel, Version::Modified(modification), true, ctx)
.await?;
let dst_rel = RelTag {
spcnode: tablespace_id,
@@ -1068,7 +1068,13 @@ impl WalIngest {
let content = modification
.tline
.get_rel_page_at_lsn(src_rel, blknum, Version::Modified(modification), ctx)
.get_rel_page_at_lsn(
src_rel,
blknum,
Version::Modified(modification),
true,
ctx,
)
.await?;
modification.put_rel_page_image(dst_rel, blknum, content)?;
num_blocks_copied += 1;
@@ -1236,7 +1242,7 @@ impl WalIngest {
};
if modification
.tline
.get_rel_exists(rel, Version::Modified(modification), ctx)
.get_rel_exists(rel, Version::Modified(modification), true, ctx)
.await?
{
self.put_rel_drop(modification, rel, ctx).await?;
@@ -1535,7 +1541,7 @@ impl WalIngest {
nblocks
} else if !modification
.tline
.get_rel_exists(rel, Version::Modified(modification), ctx)
.get_rel_exists(rel, Version::Modified(modification), true, ctx)
.await?
{
// create it with 0 size initially, the logic below will extend it
@@ -1547,7 +1553,7 @@ impl WalIngest {
} else {
modification
.tline
.get_rel_size(rel, Version::Modified(modification), ctx)
.get_rel_size(rel, Version::Modified(modification), true, ctx)
.await?
};
@@ -1644,14 +1650,14 @@ async fn get_relsize(
) -> anyhow::Result<BlockNumber> {
let nblocks = if !modification
.tline
.get_rel_exists(rel, Version::Modified(modification), ctx)
.get_rel_exists(rel, Version::Modified(modification), true, ctx)
.await?
{
0
} else {
modification
.tline
.get_rel_size(rel, Version::Modified(modification), ctx)
.get_rel_size(rel, Version::Modified(modification), true, ctx)
.await?
};
Ok(nblocks)
@@ -1726,29 +1732,29 @@ mod tests {
// The relation was created at LSN 2, not visible at LSN 1 yet.
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x10)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x10)), false, &ctx)
.await?,
false
);
assert!(tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x10)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x10)), false, &ctx)
.await
.is_err());
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
true
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
1
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
3
);
@@ -1756,46 +1762,46 @@ mod tests {
// Check page contents at each LSN
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
test_img("foo blk 0 at 2")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x30)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x30)), false, &ctx)
.await?,
test_img("foo blk 0 at 3")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x40)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x40)), false, &ctx)
.await?,
test_img("foo blk 0 at 3")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x40)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x40)), false, &ctx)
.await?,
test_img("foo blk 1 at 4")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
test_img("foo blk 0 at 3")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
test_img("foo blk 1 at 4")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 2, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 2, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
test_img("foo blk 2 at 5")
);
@@ -1811,19 +1817,19 @@ mod tests {
// Check reported size and contents after truncation
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x60)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x60)), false, &ctx)
.await?,
2
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x60)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x60)), false, &ctx)
.await?,
test_img("foo blk 0 at 3")
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x60)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x60)), false, &ctx)
.await?,
test_img("foo blk 1 at 4")
);
@@ -1831,13 +1837,13 @@ mod tests {
// should still see the truncated block with older LSN
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
3
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 2, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 2, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
test_img("foo blk 2 at 5")
);
@@ -1850,7 +1856,7 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x68)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x68)), false, &ctx)
.await?,
0
);
@@ -1863,19 +1869,19 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x70)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x70)), false, &ctx)
.await?,
2
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x70)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 0, Version::Lsn(Lsn(0x70)), false, &ctx)
.await?,
ZERO_PAGE
);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x70)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 1, Version::Lsn(Lsn(0x70)), false, &ctx)
.await?,
test_img("foo blk 1")
);
@@ -1888,21 +1894,21 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
1501
);
for blk in 2..1500 {
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, blk, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, blk, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
ZERO_PAGE
);
}
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, 1500, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, 1500, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
test_img("foo blk 1500")
);
@@ -1929,13 +1935,13 @@ mod tests {
// Check that rel exists and size is correct
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
true
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
1
);
@@ -1948,7 +1954,7 @@ mod tests {
// Check that rel is not visible anymore
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x30)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x30)), false, &ctx)
.await?,
false
);
@@ -1966,13 +1972,13 @@ mod tests {
// Check that rel exists and size is correct
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x40)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x40)), false, &ctx)
.await?,
true
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x40)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x40)), false, &ctx)
.await?,
1
);
@@ -2005,24 +2011,24 @@ mod tests {
// The relation was created at LSN 20, not visible at LSN 1 yet.
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x10)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x10)), false, &ctx)
.await?,
false
);
assert!(tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x10)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x10)), false, &ctx)
.await
.is_err());
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
true
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x20)), false, &ctx)
.await?,
relsize
);
@@ -2033,7 +2039,7 @@ mod tests {
let data = format!("foo blk {} at {}", blkno, lsn);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(lsn), &ctx)
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(lsn), false, &ctx)
.await?,
test_img(&data)
);
@@ -2050,7 +2056,7 @@ mod tests {
// Check reported size and contents after truncation
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x60)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x60)), false, &ctx)
.await?,
1
);
@@ -2060,7 +2066,7 @@ mod tests {
let data = format!("foo blk {} at {}", blkno, lsn);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x60)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x60)), false, &ctx)
.await?,
test_img(&data)
);
@@ -2069,7 +2075,7 @@ mod tests {
// should still see all blocks with older LSN
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
relsize
);
@@ -2078,7 +2084,7 @@ mod tests {
let data = format!("foo blk {} at {}", blkno, lsn);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x50)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x50)), false, &ctx)
.await?,
test_img(&data)
);
@@ -2098,13 +2104,13 @@ mod tests {
assert_eq!(
tline
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_exists(TESTREL_A, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
true
);
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
relsize
);
@@ -2114,7 +2120,7 @@ mod tests {
let data = format!("foo blk {} at {}", blkno, lsn);
assert_eq!(
tline
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x80)), &ctx)
.get_rel_page_at_lsn(TESTREL_A, blkno, Version::Lsn(Lsn(0x80)), false, &ctx)
.await?,
test_img(&data)
);
@@ -2148,7 +2154,7 @@ mod tests {
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), false, &ctx)
.await?,
RELSEG_SIZE + 1
);
@@ -2162,7 +2168,7 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), false, &ctx)
.await?,
RELSEG_SIZE
);
@@ -2177,7 +2183,7 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), false, &ctx)
.await?,
RELSEG_SIZE - 1
);
@@ -2195,7 +2201,7 @@ mod tests {
m.commit(&ctx).await?;
assert_eq!(
tline
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), &ctx)
.get_rel_size(TESTREL_A, Version::Lsn(Lsn(lsn)), false, &ctx)
.await?,
size as BlockNumber
);

View File

@@ -55,7 +55,6 @@ impl NeonWalRecord {
/// Does replaying this WAL record initialize the page from scratch, or does
/// it need to be applied over the previous image of the page?
pub fn will_init(&self) -> bool {
// If you change this function, you'll also need to change ValueBytes::will_init
match self {
NeonWalRecord::Postgres { will_init, rec: _ } => *will_init,

View File

@@ -20,7 +20,6 @@
/// Process lifecycle and abstracction for the IPC protocol.
mod process;
pub use process::Kind as ProcessKind;
/// Code to apply [`NeonWalRecord`]s.
pub(crate) mod apply_neon;
@@ -35,7 +34,7 @@ use crate::walrecord::NeonWalRecord;
use anyhow::Context;
use bytes::{Bytes, BytesMut};
use pageserver_api::key::key_to_rel_block;
use pageserver_api::models::{WalRedoManagerProcessStatus, WalRedoManagerStatus};
use pageserver_api::models::WalRedoManagerStatus;
use pageserver_api::shard::TenantShardId;
use std::sync::Arc;
use std::time::Duration;
@@ -55,7 +54,7 @@ pub struct PostgresRedoManager {
tenant_shard_id: TenantShardId,
conf: &'static PageServerConf,
last_redo_at: std::sync::Mutex<Option<Instant>>,
/// The current [`process::Process`] that is used by new redo requests.
/// The current [`process::WalRedoProcess`] that is used by new redo requests.
/// We use [`heavier_once_cell`] for coalescing the spawning, but the redo
/// requests don't use the [`heavier_once_cell::Guard`] to keep ahold of the
/// their process object; we use [`Arc::clone`] for that.
@@ -67,7 +66,7 @@ pub struct PostgresRedoManager {
/// still be using the old redo process. But, those other tasks will most likely
/// encounter an error as well, and errors are an unexpected condition anyway.
/// So, probably we could get rid of the `Arc` in the future.
redo_process: heavier_once_cell::OnceCell<Arc<process::Process>>,
redo_process: heavier_once_cell::OnceCell<Arc<process::WalRedoProcess>>,
}
///
@@ -140,8 +139,8 @@ impl PostgresRedoManager {
}
}
pub fn status(&self) -> WalRedoManagerStatus {
WalRedoManagerStatus {
pub(crate) fn status(&self) -> Option<WalRedoManagerStatus> {
Some(WalRedoManagerStatus {
last_redo_at: {
let at = *self.last_redo_at.lock().unwrap();
at.and_then(|at| {
@@ -150,14 +149,8 @@ impl PostgresRedoManager {
chrono::Utc::now().checked_sub_signed(chrono::Duration::from_std(age).ok()?)
})
},
process: self
.redo_process
.get()
.map(|p| WalRedoManagerProcessStatus {
pid: p.id(),
kind: std::borrow::Cow::Borrowed(p.kind().into()),
}),
}
pid: self.redo_process.get().map(|p| p.id()),
})
}
}
@@ -215,33 +208,37 @@ impl PostgresRedoManager {
const MAX_RETRY_ATTEMPTS: u32 = 1;
let mut n_attempts = 0u32;
loop {
let proc: Arc<process::Process> = match self.redo_process.get_or_init_detached().await {
Ok(guard) => Arc::clone(&guard),
Err(permit) => {
// don't hold poison_guard, the launch code can bail
let start = Instant::now();
let proc = Arc::new(
process::Process::launch(self.conf, self.tenant_shard_id, pg_version)
let proc: Arc<process::WalRedoProcess> =
match self.redo_process.get_or_init_detached().await {
Ok(guard) => Arc::clone(&guard),
Err(permit) => {
// don't hold poison_guard, the launch code can bail
let start = Instant::now();
let proc = Arc::new(
process::WalRedoProcess::launch(
self.conf,
self.tenant_shard_id,
pg_version,
)
.context("launch walredo process")?,
);
let duration = start.elapsed();
WAL_REDO_PROCESS_LAUNCH_DURATION_HISTOGRAM.observe(duration.as_secs_f64());
info!(
duration_ms = duration.as_millis(),
pid = proc.id(),
"launched walredo process"
);
self.redo_process.set(Arc::clone(&proc), permit);
proc
}
};
);
let duration = start.elapsed();
WAL_REDO_PROCESS_LAUNCH_DURATION_HISTOGRAM.observe(duration.as_secs_f64());
info!(
duration_ms = duration.as_millis(),
pid = proc.id(),
"launched walredo process"
);
self.redo_process.set(Arc::clone(&proc), permit);
proc
}
};
let started_at = std::time::Instant::now();
// Relational WAL records are applied using wal-redo-postgres
let result = proc
.apply_wal_records(rel, blknum, &base_img, records, wal_redo_timeout)
.await
.context("apply_wal_records");
let duration = started_at.elapsed();

View File

@@ -1,67 +1,186 @@
use std::time::Duration;
use self::no_leak_child::NoLeakChild;
use crate::{
config::PageServerConf,
metrics::{WalRedoKillCause, WAL_REDO_PROCESS_COUNTERS, WAL_REDO_RECORD_COUNTER},
walrecord::NeonWalRecord,
};
use anyhow::Context;
use bytes::Bytes;
use nix::poll::{PollFd, PollFlags};
use pageserver_api::{reltag::RelTag, shard::TenantShardId};
use utils::lsn::Lsn;
use crate::{config::PageServerConf, walrecord::NeonWalRecord};
use postgres_ffi::BLCKSZ;
use std::os::fd::AsRawFd;
#[cfg(feature = "testing")]
use std::sync::atomic::AtomicUsize;
use std::{
collections::VecDeque,
io::{Read, Write},
process::{ChildStdin, ChildStdout, Command, Stdio},
sync::{Mutex, MutexGuard},
time::Duration,
};
use tracing::{debug, error, instrument, Instrument};
use utils::{lsn::Lsn, nonblock::set_nonblock};
mod no_leak_child;
/// The IPC protocol that pageserver and walredo process speak over their shared pipe.
mod protocol;
mod process_impl {
pub(super) mod process_async;
pub(super) mod process_std;
pub struct WalRedoProcess {
#[allow(dead_code)]
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
// Some() on construction, only becomes None on Drop.
child: Option<NoLeakChild>,
stdout: Mutex<ProcessOutput>,
stdin: Mutex<ProcessInput>,
/// Counter to separate same sized walredo inputs failing at the same millisecond.
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize,
}
#[derive(
Clone,
Copy,
Debug,
PartialEq,
Eq,
strum_macros::EnumString,
strum_macros::Display,
strum_macros::IntoStaticStr,
serde_with::DeserializeFromStr,
serde_with::SerializeDisplay,
)]
#[strum(serialize_all = "kebab-case")]
#[repr(u8)]
pub enum Kind {
Sync,
Async,
struct ProcessInput {
stdin: ChildStdin,
n_requests: usize,
}
pub(crate) enum Process {
Sync(process_impl::process_std::WalRedoProcess),
Async(process_impl::process_async::WalRedoProcess),
struct ProcessOutput {
stdout: ChildStdout,
pending_responses: VecDeque<Option<Bytes>>,
n_processed_responses: usize,
}
impl Process {
#[inline(always)]
pub fn launch(
impl WalRedoProcess {
//
// Start postgres binary in special WAL redo mode.
//
#[instrument(skip_all,fields(pg_version=pg_version))]
pub(crate) fn launch(
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
pg_version: u32,
) -> anyhow::Result<Self> {
Ok(match conf.walredo_process_kind {
Kind::Sync => Self::Sync(process_impl::process_std::WalRedoProcess::launch(
conf,
tenant_shard_id,
pg_version,
)?),
Kind::Async => Self::Async(process_impl::process_async::WalRedoProcess::launch(
conf,
tenant_shard_id,
pg_version,
)?),
crate::span::debug_assert_current_span_has_tenant_id();
let pg_bin_dir_path = conf.pg_bin_dir(pg_version).context("pg_bin_dir")?; // TODO these should be infallible.
let pg_lib_dir_path = conf.pg_lib_dir(pg_version).context("pg_lib_dir")?;
use no_leak_child::NoLeakChildCommandExt;
// Start postgres itself
let child = Command::new(pg_bin_dir_path.join("postgres"))
// the first arg must be --wal-redo so the child process enters into walredo mode
.arg("--wal-redo")
// the child doesn't process this arg, but, having it in the argv helps indentify the
// walredo process for a particular tenant when debugging a pagserver
.args(["--tenant-shard-id", &format!("{tenant_shard_id}")])
.stdin(Stdio::piped())
.stderr(Stdio::piped())
.stdout(Stdio::piped())
.env_clear()
.env("LD_LIBRARY_PATH", &pg_lib_dir_path)
.env("DYLD_LIBRARY_PATH", &pg_lib_dir_path)
// NB: The redo process is not trusted after we sent it the first
// walredo work. Before that, it is trusted. Specifically, we trust
// it to
// 1. close all file descriptors except stdin, stdout, stderr because
// pageserver might not be 100% diligent in setting FD_CLOEXEC on all
// the files it opens, and
// 2. to use seccomp to sandbox itself before processing the first
// walredo request.
.spawn_no_leak_child(tenant_shard_id)
.context("spawn process")?;
WAL_REDO_PROCESS_COUNTERS.started.inc();
let mut child = scopeguard::guard(child, |child| {
error!("killing wal-redo-postgres process due to a problem during launch");
child.kill_and_wait(WalRedoKillCause::Startup);
});
let stdin = child.stdin.take().unwrap();
let stdout = child.stdout.take().unwrap();
let stderr = child.stderr.take().unwrap();
let stderr = tokio::process::ChildStderr::from_std(stderr)
.context("convert to tokio::ChildStderr")?;
macro_rules! set_nonblock_or_log_err {
($file:ident) => {{
let res = set_nonblock($file.as_raw_fd());
if let Err(e) = &res {
error!(error = %e, file = stringify!($file), pid = child.id(), "set_nonblock failed");
}
res
}};
}
set_nonblock_or_log_err!(stdin)?;
set_nonblock_or_log_err!(stdout)?;
// all fallible operations post-spawn are complete, so get rid of the guard
let child = scopeguard::ScopeGuard::into_inner(child);
tokio::spawn(
async move {
scopeguard::defer! {
debug!("wal-redo-postgres stderr_logger_task finished");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_finished.inc();
}
debug!("wal-redo-postgres stderr_logger_task started");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_started.inc();
use tokio::io::AsyncBufReadExt;
let mut stderr_lines = tokio::io::BufReader::new(stderr);
let mut buf = Vec::new();
let res = loop {
buf.clear();
// TODO we don't trust the process to cap its stderr length.
// Currently it can do unbounded Vec allocation.
match stderr_lines.read_until(b'\n', &mut buf).await {
Ok(0) => break Ok(()), // eof
Ok(num_bytes) => {
let output = String::from_utf8_lossy(&buf[..num_bytes]);
error!(%output, "received output");
}
Err(e) => {
break Err(e);
}
}
};
match res {
Ok(()) => (),
Err(e) => {
error!(error=?e, "failed to read from walredo stderr");
}
}
}.instrument(tracing::info_span!(parent: None, "wal-redo-postgres-stderr", pid = child.id(), tenant_id = %tenant_shard_id.tenant_id, shard_id = %tenant_shard_id.shard_slug(), %pg_version))
);
Ok(Self {
conf,
tenant_shard_id,
child: Some(child),
stdin: Mutex::new(ProcessInput {
stdin,
n_requests: 0,
}),
stdout: Mutex::new(ProcessOutput {
stdout,
pending_responses: VecDeque::new(),
n_processed_responses: 0,
}),
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize::default(),
})
}
#[inline(always)]
pub(crate) async fn apply_wal_records(
pub(crate) fn id(&self) -> u32 {
self.child
.as_ref()
.expect("must not call this during Drop")
.id()
}
// Apply given WAL records ('records') over an old page image. Returns
// new page image.
//
#[instrument(skip_all, fields(tenant_id=%self.tenant_shard_id.tenant_id, shard_id=%self.tenant_shard_id.shard_slug(), pid=%self.id()))]
pub(crate) fn apply_wal_records(
&self,
rel: RelTag,
blknum: u32,
@@ -69,29 +188,221 @@ impl Process {
records: &[(Lsn, NeonWalRecord)],
wal_redo_timeout: Duration,
) -> anyhow::Result<Bytes> {
match self {
Process::Sync(p) => {
p.apply_wal_records(rel, blknum, base_img, records, wal_redo_timeout)
.await
let tag = protocol::BufferTag { rel, blknum };
let input = self.stdin.lock().unwrap();
// Serialize all the messages to send the WAL redo process first.
//
// This could be problematic if there are millions of records to replay,
// but in practice the number of records is usually so small that it doesn't
// matter, and it's better to keep this code simple.
//
// Most requests start with a before-image with BLCKSZ bytes, followed by
// by some other WAL records. Start with a buffer that can hold that
// comfortably.
let mut writebuf: Vec<u8> = Vec::with_capacity((BLCKSZ as usize) * 3);
protocol::build_begin_redo_for_block_msg(tag, &mut writebuf);
if let Some(img) = base_img {
protocol::build_push_page_msg(tag, img, &mut writebuf);
}
for (lsn, rec) in records.iter() {
if let NeonWalRecord::Postgres {
will_init: _,
rec: postgres_rec,
} = rec
{
protocol::build_apply_record_msg(*lsn, postgres_rec, &mut writebuf);
} else {
anyhow::bail!("tried to pass neon wal record to postgres WAL redo");
}
Process::Async(p) => {
p.apply_wal_records(rel, blknum, base_img, records, wal_redo_timeout)
.await
}
protocol::build_get_page_msg(tag, &mut writebuf);
WAL_REDO_RECORD_COUNTER.inc_by(records.len() as u64);
let res = self.apply_wal_records0(&writebuf, input, wal_redo_timeout);
if res.is_err() {
// not all of these can be caused by this particular input, however these are so rare
// in tests so capture all.
self.record_and_log(&writebuf);
}
res
}
fn apply_wal_records0(
&self,
writebuf: &[u8],
input: MutexGuard<ProcessInput>,
wal_redo_timeout: Duration,
) -> anyhow::Result<Bytes> {
let mut proc = { input }; // TODO: remove this legacy rename, but this keep the patch small.
let mut nwrite = 0usize;
while nwrite < writebuf.len() {
let mut stdin_pollfds = [PollFd::new(&proc.stdin, PollFlags::POLLOUT)];
let n = loop {
match nix::poll::poll(&mut stdin_pollfds[..], wal_redo_timeout.as_millis() as i32) {
Err(nix::errno::Errno::EINTR) => continue,
res => break res,
}
}?;
if n == 0 {
anyhow::bail!("WAL redo timed out");
}
// If 'stdin' is writeable, do write.
let in_revents = stdin_pollfds[0].revents().unwrap();
if in_revents & (PollFlags::POLLERR | PollFlags::POLLOUT) != PollFlags::empty() {
nwrite += proc.stdin.write(&writebuf[nwrite..])?;
}
if in_revents.contains(PollFlags::POLLHUP) {
// We still have more data to write, but the process closed the pipe.
anyhow::bail!("WAL redo process closed its stdin unexpectedly");
}
}
let request_no = proc.n_requests;
proc.n_requests += 1;
drop(proc);
// To improve walredo performance we separate sending requests and receiving
// responses. Them are protected by different mutexes (output and input).
// If thread T1, T2, T3 send requests D1, D2, D3 to walredo process
// then there is not warranty that T1 will first granted output mutex lock.
// To address this issue we maintain number of sent requests, number of processed
// responses and ring buffer with pending responses. After sending response
// (under input mutex), threads remembers request number. Then it releases
// input mutex, locks output mutex and fetch in ring buffer all responses until
// its stored request number. The it takes correspondent element from
// pending responses ring buffer and truncate all empty elements from the front,
// advancing processed responses number.
let mut output = self.stdout.lock().unwrap();
let n_processed_responses = output.n_processed_responses;
while n_processed_responses + output.pending_responses.len() <= request_no {
// We expect the WAL redo process to respond with an 8k page image. We read it
// into this buffer.
let mut resultbuf = vec![0; BLCKSZ.into()];
let mut nresult: usize = 0; // # of bytes read into 'resultbuf' so far
while nresult < BLCKSZ.into() {
let mut stdout_pollfds = [PollFd::new(&output.stdout, PollFlags::POLLIN)];
// We do two things simultaneously: reading response from stdout
// and forward any logging information that the child writes to its stderr to the page server's log.
let n = loop {
match nix::poll::poll(
&mut stdout_pollfds[..],
wal_redo_timeout.as_millis() as i32,
) {
Err(nix::errno::Errno::EINTR) => continue,
res => break res,
}
}?;
if n == 0 {
anyhow::bail!("WAL redo timed out");
}
// If we have some data in stdout, read it to the result buffer.
let out_revents = stdout_pollfds[0].revents().unwrap();
if out_revents & (PollFlags::POLLERR | PollFlags::POLLIN) != PollFlags::empty() {
nresult += output.stdout.read(&mut resultbuf[nresult..])?;
}
if out_revents.contains(PollFlags::POLLHUP) {
anyhow::bail!("WAL redo process closed its stdout unexpectedly");
}
}
output
.pending_responses
.push_back(Some(Bytes::from(resultbuf)));
}
// Replace our request's response with None in `pending_responses`.
// Then make space in the ring buffer by clearing out any seqence of contiguous
// `None`'s from the front of `pending_responses`.
// NB: We can't pop_front() because other requests' responses because another
// requester might have grabbed the output mutex before us:
// T1: grab input mutex
// T1: send request_no 23
// T1: release input mutex
// T2: grab input mutex
// T2: send request_no 24
// T2: release input mutex
// T2: grab output mutex
// T2: n_processed_responses + output.pending_responses.len() <= request_no
// 23 0 24
// T2: enters poll loop that reads stdout
// T2: put response for 23 into pending_responses
// T2: put response for 24 into pending_resposnes
// pending_responses now looks like this: Front Some(response_23) Some(response_24) Back
// T2: takes its response_24
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: releases output mutex
// T1: grabs output mutex
// T1: n_processed_responses + output.pending_responses.len() > request_no
// 23 2 23
// T1: skips poll loop that reads stdout
// T1: takes its response_23
// pending_responses now looks like this: Front None None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Back
// n_processed_responses now has value 25
let res = output.pending_responses[request_no - n_processed_responses]
.take()
.expect("we own this request_no, nobody else is supposed to take it");
while let Some(front) = output.pending_responses.front() {
if front.is_none() {
output.pending_responses.pop_front();
output.n_processed_responses += 1;
} else {
break;
}
}
Ok(res)
}
#[cfg(feature = "testing")]
fn record_and_log(&self, writebuf: &[u8]) {
use std::sync::atomic::Ordering;
let millis = std::time::SystemTime::now()
.duration_since(std::time::SystemTime::UNIX_EPOCH)
.unwrap()
.as_millis();
let seq = self.dump_sequence.fetch_add(1, Ordering::Relaxed);
// these files will be collected to an allure report
let filename = format!("walredo-{millis}-{}-{seq}.walredo", writebuf.len());
let path = self.conf.tenant_path(&self.tenant_shard_id).join(&filename);
let res = std::fs::OpenOptions::new()
.write(true)
.create_new(true)
.read(true)
.open(path)
.and_then(|mut f| f.write_all(writebuf));
// trip up allowed_errors
if let Err(e) = res {
tracing::error!(target=%filename, length=writebuf.len(), "failed to write out the walredo errored input: {e}");
} else {
tracing::error!(filename, "erroring walredo input saved");
}
}
pub(crate) fn id(&self) -> u32 {
match self {
Process::Sync(p) => p.id(),
Process::Async(p) => p.id(),
}
}
#[cfg(not(feature = "testing"))]
fn record_and_log(&self, _: &[u8]) {}
}
pub(crate) fn kind(&self) -> Kind {
match self {
Process::Sync(_) => Kind::Sync,
Process::Async(_) => Kind::Async,
}
impl Drop for WalRedoProcess {
fn drop(&mut self) {
self.child
.take()
.expect("we only do this once")
.kill_and_wait(WalRedoKillCause::WalRedoProcessDrop);
// no way to wait for stderr_logger_task from Drop because that is async only
}
}

View File

@@ -1,374 +0,0 @@
use self::no_leak_child::NoLeakChild;
use crate::{
config::PageServerConf,
metrics::{WalRedoKillCause, WAL_REDO_PROCESS_COUNTERS, WAL_REDO_RECORD_COUNTER},
walrecord::NeonWalRecord,
walredo::process::{no_leak_child, protocol},
};
use anyhow::Context;
use bytes::Bytes;
use pageserver_api::{reltag::RelTag, shard::TenantShardId};
use postgres_ffi::BLCKSZ;
#[cfg(feature = "testing")]
use std::sync::atomic::AtomicUsize;
use std::{
collections::VecDeque,
process::{Command, Stdio},
time::Duration,
};
use tokio::io::{AsyncReadExt, AsyncWriteExt};
use tracing::{debug, error, instrument, Instrument};
use utils::{lsn::Lsn, poison::Poison};
pub struct WalRedoProcess {
#[allow(dead_code)]
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
// Some() on construction, only becomes None on Drop.
child: Option<NoLeakChild>,
stdout: tokio::sync::Mutex<Poison<ProcessOutput>>,
stdin: tokio::sync::Mutex<Poison<ProcessInput>>,
/// Counter to separate same sized walredo inputs failing at the same millisecond.
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize,
}
struct ProcessInput {
stdin: tokio::process::ChildStdin,
n_requests: usize,
}
struct ProcessOutput {
stdout: tokio::process::ChildStdout,
pending_responses: VecDeque<Option<Bytes>>,
n_processed_responses: usize,
}
impl WalRedoProcess {
//
// Start postgres binary in special WAL redo mode.
//
#[instrument(skip_all,fields(pg_version=pg_version))]
pub(crate) fn launch(
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
pg_version: u32,
) -> anyhow::Result<Self> {
crate::span::debug_assert_current_span_has_tenant_id();
let pg_bin_dir_path = conf.pg_bin_dir(pg_version).context("pg_bin_dir")?; // TODO these should be infallible.
let pg_lib_dir_path = conf.pg_lib_dir(pg_version).context("pg_lib_dir")?;
use no_leak_child::NoLeakChildCommandExt;
// Start postgres itself
let child = Command::new(pg_bin_dir_path.join("postgres"))
// the first arg must be --wal-redo so the child process enters into walredo mode
.arg("--wal-redo")
// the child doesn't process this arg, but, having it in the argv helps indentify the
// walredo process for a particular tenant when debugging a pagserver
.args(["--tenant-shard-id", &format!("{tenant_shard_id}")])
.stdin(Stdio::piped())
.stderr(Stdio::piped())
.stdout(Stdio::piped())
.env_clear()
.env("LD_LIBRARY_PATH", &pg_lib_dir_path)
.env("DYLD_LIBRARY_PATH", &pg_lib_dir_path)
// NB: The redo process is not trusted after we sent it the first
// walredo work. Before that, it is trusted. Specifically, we trust
// it to
// 1. close all file descriptors except stdin, stdout, stderr because
// pageserver might not be 100% diligent in setting FD_CLOEXEC on all
// the files it opens, and
// 2. to use seccomp to sandbox itself before processing the first
// walredo request.
.spawn_no_leak_child(tenant_shard_id)
.context("spawn process")?;
WAL_REDO_PROCESS_COUNTERS.started.inc();
let mut child = scopeguard::guard(child, |child| {
error!("killing wal-redo-postgres process due to a problem during launch");
child.kill_and_wait(WalRedoKillCause::Startup);
});
let stdin = child.stdin.take().unwrap();
let stdout = child.stdout.take().unwrap();
let stderr = child.stderr.take().unwrap();
let stderr = tokio::process::ChildStderr::from_std(stderr)
.context("convert to tokio::ChildStderr")?;
let stdin =
tokio::process::ChildStdin::from_std(stdin).context("convert to tokio::ChildStdin")?;
let stdout = tokio::process::ChildStdout::from_std(stdout)
.context("convert to tokio::ChildStdout")?;
// all fallible operations post-spawn are complete, so get rid of the guard
let child = scopeguard::ScopeGuard::into_inner(child);
tokio::spawn(
async move {
scopeguard::defer! {
debug!("wal-redo-postgres stderr_logger_task finished");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_finished.inc();
}
debug!("wal-redo-postgres stderr_logger_task started");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_started.inc();
use tokio::io::AsyncBufReadExt;
let mut stderr_lines = tokio::io::BufReader::new(stderr);
let mut buf = Vec::new();
let res = loop {
buf.clear();
// TODO we don't trust the process to cap its stderr length.
// Currently it can do unbounded Vec allocation.
match stderr_lines.read_until(b'\n', &mut buf).await {
Ok(0) => break Ok(()), // eof
Ok(num_bytes) => {
let output = String::from_utf8_lossy(&buf[..num_bytes]);
error!(%output, "received output");
}
Err(e) => {
break Err(e);
}
}
};
match res {
Ok(()) => (),
Err(e) => {
error!(error=?e, "failed to read from walredo stderr");
}
}
}.instrument(tracing::info_span!(parent: None, "wal-redo-postgres-stderr", pid = child.id(), tenant_id = %tenant_shard_id.tenant_id, shard_id = %tenant_shard_id.shard_slug(), %pg_version))
);
Ok(Self {
conf,
tenant_shard_id,
child: Some(child),
stdin: tokio::sync::Mutex::new(Poison::new(
"stdin",
ProcessInput {
stdin,
n_requests: 0,
},
)),
stdout: tokio::sync::Mutex::new(Poison::new(
"stdout",
ProcessOutput {
stdout,
pending_responses: VecDeque::new(),
n_processed_responses: 0,
},
)),
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize::default(),
})
}
pub(crate) fn id(&self) -> u32 {
self.child
.as_ref()
.expect("must not call this during Drop")
.id()
}
/// Apply given WAL records ('records') over an old page image. Returns
/// new page image.
///
/// # Cancel-Safety
///
/// Cancellation safe.
#[instrument(skip_all, fields(tenant_id=%self.tenant_shard_id.tenant_id, shard_id=%self.tenant_shard_id.shard_slug(), pid=%self.id()))]
pub(crate) async fn apply_wal_records(
&self,
rel: RelTag,
blknum: u32,
base_img: &Option<Bytes>,
records: &[(Lsn, NeonWalRecord)],
wal_redo_timeout: Duration,
) -> anyhow::Result<Bytes> {
let tag = protocol::BufferTag { rel, blknum };
// Serialize all the messages to send the WAL redo process first.
//
// This could be problematic if there are millions of records to replay,
// but in practice the number of records is usually so small that it doesn't
// matter, and it's better to keep this code simple.
//
// Most requests start with a before-image with BLCKSZ bytes, followed by
// by some other WAL records. Start with a buffer that can hold that
// comfortably.
let mut writebuf: Vec<u8> = Vec::with_capacity((BLCKSZ as usize) * 3);
protocol::build_begin_redo_for_block_msg(tag, &mut writebuf);
if let Some(img) = base_img {
protocol::build_push_page_msg(tag, img, &mut writebuf);
}
for (lsn, rec) in records.iter() {
if let NeonWalRecord::Postgres {
will_init: _,
rec: postgres_rec,
} = rec
{
protocol::build_apply_record_msg(*lsn, postgres_rec, &mut writebuf);
} else {
anyhow::bail!("tried to pass neon wal record to postgres WAL redo");
}
}
protocol::build_get_page_msg(tag, &mut writebuf);
WAL_REDO_RECORD_COUNTER.inc_by(records.len() as u64);
let Ok(res) =
tokio::time::timeout(wal_redo_timeout, self.apply_wal_records0(&writebuf)).await
else {
anyhow::bail!("WAL redo timed out");
};
if res.is_err() {
// not all of these can be caused by this particular input, however these are so rare
// in tests so capture all.
self.record_and_log(&writebuf);
}
res
}
/// # Cancel-Safety
///
/// When not polled to completion (e.g. because in `tokio::select!` another
/// branch becomes ready before this future), concurrent and subsequent
/// calls may fail due to [`utils::poison::Poison::check_and_arm`] calls.
/// Dispose of this process instance and create a new one.
async fn apply_wal_records0(&self, writebuf: &[u8]) -> anyhow::Result<Bytes> {
let request_no = {
let mut lock_guard = self.stdin.lock().await;
let mut poison_guard = lock_guard.check_and_arm()?;
let input = poison_guard.data_mut();
input
.stdin
.write_all(writebuf)
.await
.context("write to walredo stdin")?;
let request_no = input.n_requests;
input.n_requests += 1;
poison_guard.disarm();
request_no
};
// To improve walredo performance we separate sending requests and receiving
// responses. Them are protected by different mutexes (output and input).
// If thread T1, T2, T3 send requests D1, D2, D3 to walredo process
// then there is not warranty that T1 will first granted output mutex lock.
// To address this issue we maintain number of sent requests, number of processed
// responses and ring buffer with pending responses. After sending response
// (under input mutex), threads remembers request number. Then it releases
// input mutex, locks output mutex and fetch in ring buffer all responses until
// its stored request number. The it takes correspondent element from
// pending responses ring buffer and truncate all empty elements from the front,
// advancing processed responses number.
let mut lock_guard = self.stdout.lock().await;
let mut poison_guard = lock_guard.check_and_arm()?;
let output = poison_guard.data_mut();
let n_processed_responses = output.n_processed_responses;
while n_processed_responses + output.pending_responses.len() <= request_no {
// We expect the WAL redo process to respond with an 8k page image. We read it
// into this buffer.
let mut resultbuf = vec![0; BLCKSZ.into()];
output
.stdout
.read_exact(&mut resultbuf)
.await
.context("read walredo stdout")?;
output
.pending_responses
.push_back(Some(Bytes::from(resultbuf)));
}
// Replace our request's response with None in `pending_responses`.
// Then make space in the ring buffer by clearing out any seqence of contiguous
// `None`'s from the front of `pending_responses`.
// NB: We can't pop_front() because other requests' responses because another
// requester might have grabbed the output mutex before us:
// T1: grab input mutex
// T1: send request_no 23
// T1: release input mutex
// T2: grab input mutex
// T2: send request_no 24
// T2: release input mutex
// T2: grab output mutex
// T2: n_processed_responses + output.pending_responses.len() <= request_no
// 23 0 24
// T2: enters poll loop that reads stdout
// T2: put response for 23 into pending_responses
// T2: put response for 24 into pending_resposnes
// pending_responses now looks like this: Front Some(response_23) Some(response_24) Back
// T2: takes its response_24
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: releases output mutex
// T1: grabs output mutex
// T1: n_processed_responses + output.pending_responses.len() > request_no
// 23 2 23
// T1: skips poll loop that reads stdout
// T1: takes its response_23
// pending_responses now looks like this: Front None None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Back
// n_processed_responses now has value 25
let res = output.pending_responses[request_no - n_processed_responses]
.take()
.expect("we own this request_no, nobody else is supposed to take it");
while let Some(front) = output.pending_responses.front() {
if front.is_none() {
output.pending_responses.pop_front();
output.n_processed_responses += 1;
} else {
break;
}
}
poison_guard.disarm();
Ok(res)
}
#[cfg(feature = "testing")]
fn record_and_log(&self, writebuf: &[u8]) {
use std::sync::atomic::Ordering;
let millis = std::time::SystemTime::now()
.duration_since(std::time::SystemTime::UNIX_EPOCH)
.unwrap()
.as_millis();
let seq = self.dump_sequence.fetch_add(1, Ordering::Relaxed);
// these files will be collected to an allure report
let filename = format!("walredo-{millis}-{}-{seq}.walredo", writebuf.len());
let path = self.conf.tenant_path(&self.tenant_shard_id).join(&filename);
use std::io::Write;
let res = std::fs::OpenOptions::new()
.write(true)
.create_new(true)
.read(true)
.open(path)
.and_then(|mut f| f.write_all(writebuf));
// trip up allowed_errors
if let Err(e) = res {
tracing::error!(target=%filename, length=writebuf.len(), "failed to write out the walredo errored input: {e}");
} else {
tracing::error!(filename, "erroring walredo input saved");
}
}
#[cfg(not(feature = "testing"))]
fn record_and_log(&self, _: &[u8]) {}
}
impl Drop for WalRedoProcess {
fn drop(&mut self) {
self.child
.take()
.expect("we only do this once")
.kill_and_wait(WalRedoKillCause::WalRedoProcessDrop);
// no way to wait for stderr_logger_task from Drop because that is async only
}
}

View File

@@ -1,405 +0,0 @@
use self::no_leak_child::NoLeakChild;
use crate::{
config::PageServerConf,
metrics::{WalRedoKillCause, WAL_REDO_PROCESS_COUNTERS, WAL_REDO_RECORD_COUNTER},
walrecord::NeonWalRecord,
walredo::process::{no_leak_child, protocol},
};
use anyhow::Context;
use bytes::Bytes;
use nix::poll::{PollFd, PollFlags};
use pageserver_api::{reltag::RelTag, shard::TenantShardId};
use postgres_ffi::BLCKSZ;
use std::os::fd::AsRawFd;
#[cfg(feature = "testing")]
use std::sync::atomic::AtomicUsize;
use std::{
collections::VecDeque,
io::{Read, Write},
process::{ChildStdin, ChildStdout, Command, Stdio},
sync::{Mutex, MutexGuard},
time::Duration,
};
use tracing::{debug, error, instrument, Instrument};
use utils::{lsn::Lsn, nonblock::set_nonblock};
pub struct WalRedoProcess {
#[allow(dead_code)]
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
// Some() on construction, only becomes None on Drop.
child: Option<NoLeakChild>,
stdout: Mutex<ProcessOutput>,
stdin: Mutex<ProcessInput>,
/// Counter to separate same sized walredo inputs failing at the same millisecond.
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize,
}
struct ProcessInput {
stdin: ChildStdin,
n_requests: usize,
}
struct ProcessOutput {
stdout: ChildStdout,
pending_responses: VecDeque<Option<Bytes>>,
n_processed_responses: usize,
}
impl WalRedoProcess {
//
// Start postgres binary in special WAL redo mode.
//
#[instrument(skip_all,fields(pg_version=pg_version))]
pub(crate) fn launch(
conf: &'static PageServerConf,
tenant_shard_id: TenantShardId,
pg_version: u32,
) -> anyhow::Result<Self> {
crate::span::debug_assert_current_span_has_tenant_id();
let pg_bin_dir_path = conf.pg_bin_dir(pg_version).context("pg_bin_dir")?; // TODO these should be infallible.
let pg_lib_dir_path = conf.pg_lib_dir(pg_version).context("pg_lib_dir")?;
use no_leak_child::NoLeakChildCommandExt;
// Start postgres itself
let child = Command::new(pg_bin_dir_path.join("postgres"))
// the first arg must be --wal-redo so the child process enters into walredo mode
.arg("--wal-redo")
// the child doesn't process this arg, but, having it in the argv helps indentify the
// walredo process for a particular tenant when debugging a pagserver
.args(["--tenant-shard-id", &format!("{tenant_shard_id}")])
.stdin(Stdio::piped())
.stderr(Stdio::piped())
.stdout(Stdio::piped())
.env_clear()
.env("LD_LIBRARY_PATH", &pg_lib_dir_path)
.env("DYLD_LIBRARY_PATH", &pg_lib_dir_path)
// NB: The redo process is not trusted after we sent it the first
// walredo work. Before that, it is trusted. Specifically, we trust
// it to
// 1. close all file descriptors except stdin, stdout, stderr because
// pageserver might not be 100% diligent in setting FD_CLOEXEC on all
// the files it opens, and
// 2. to use seccomp to sandbox itself before processing the first
// walredo request.
.spawn_no_leak_child(tenant_shard_id)
.context("spawn process")?;
WAL_REDO_PROCESS_COUNTERS.started.inc();
let mut child = scopeguard::guard(child, |child| {
error!("killing wal-redo-postgres process due to a problem during launch");
child.kill_and_wait(WalRedoKillCause::Startup);
});
let stdin = child.stdin.take().unwrap();
let stdout = child.stdout.take().unwrap();
let stderr = child.stderr.take().unwrap();
let stderr = tokio::process::ChildStderr::from_std(stderr)
.context("convert to tokio::ChildStderr")?;
macro_rules! set_nonblock_or_log_err {
($file:ident) => {{
let res = set_nonblock($file.as_raw_fd());
if let Err(e) = &res {
error!(error = %e, file = stringify!($file), pid = child.id(), "set_nonblock failed");
}
res
}};
}
set_nonblock_or_log_err!(stdin)?;
set_nonblock_or_log_err!(stdout)?;
// all fallible operations post-spawn are complete, so get rid of the guard
let child = scopeguard::ScopeGuard::into_inner(child);
tokio::spawn(
async move {
scopeguard::defer! {
debug!("wal-redo-postgres stderr_logger_task finished");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_finished.inc();
}
debug!("wal-redo-postgres stderr_logger_task started");
crate::metrics::WAL_REDO_PROCESS_COUNTERS.active_stderr_logger_tasks_started.inc();
use tokio::io::AsyncBufReadExt;
let mut stderr_lines = tokio::io::BufReader::new(stderr);
let mut buf = Vec::new();
let res = loop {
buf.clear();
// TODO we don't trust the process to cap its stderr length.
// Currently it can do unbounded Vec allocation.
match stderr_lines.read_until(b'\n', &mut buf).await {
Ok(0) => break Ok(()), // eof
Ok(num_bytes) => {
let output = String::from_utf8_lossy(&buf[..num_bytes]);
error!(%output, "received output");
}
Err(e) => {
break Err(e);
}
}
};
match res {
Ok(()) => (),
Err(e) => {
error!(error=?e, "failed to read from walredo stderr");
}
}
}.instrument(tracing::info_span!(parent: None, "wal-redo-postgres-stderr", pid = child.id(), tenant_id = %tenant_shard_id.tenant_id, shard_id = %tenant_shard_id.shard_slug(), %pg_version))
);
Ok(Self {
conf,
tenant_shard_id,
child: Some(child),
stdin: Mutex::new(ProcessInput {
stdin,
n_requests: 0,
}),
stdout: Mutex::new(ProcessOutput {
stdout,
pending_responses: VecDeque::new(),
n_processed_responses: 0,
}),
#[cfg(feature = "testing")]
dump_sequence: AtomicUsize::default(),
})
}
pub(crate) fn id(&self) -> u32 {
self.child
.as_ref()
.expect("must not call this during Drop")
.id()
}
// Apply given WAL records ('records') over an old page image. Returns
// new page image.
//
#[instrument(skip_all, fields(tenant_id=%self.tenant_shard_id.tenant_id, shard_id=%self.tenant_shard_id.shard_slug(), pid=%self.id()))]
pub(crate) async fn apply_wal_records(
&self,
rel: RelTag,
blknum: u32,
base_img: &Option<Bytes>,
records: &[(Lsn, NeonWalRecord)],
wal_redo_timeout: Duration,
) -> anyhow::Result<Bytes> {
let tag = protocol::BufferTag { rel, blknum };
let input = self.stdin.lock().unwrap();
// Serialize all the messages to send the WAL redo process first.
//
// This could be problematic if there are millions of records to replay,
// but in practice the number of records is usually so small that it doesn't
// matter, and it's better to keep this code simple.
//
// Most requests start with a before-image with BLCKSZ bytes, followed by
// by some other WAL records. Start with a buffer that can hold that
// comfortably.
let mut writebuf: Vec<u8> = Vec::with_capacity((BLCKSZ as usize) * 3);
protocol::build_begin_redo_for_block_msg(tag, &mut writebuf);
if let Some(img) = base_img {
protocol::build_push_page_msg(tag, img, &mut writebuf);
}
for (lsn, rec) in records.iter() {
if let NeonWalRecord::Postgres {
will_init: _,
rec: postgres_rec,
} = rec
{
protocol::build_apply_record_msg(*lsn, postgres_rec, &mut writebuf);
} else {
anyhow::bail!("tried to pass neon wal record to postgres WAL redo");
}
}
protocol::build_get_page_msg(tag, &mut writebuf);
WAL_REDO_RECORD_COUNTER.inc_by(records.len() as u64);
let res = self.apply_wal_records0(&writebuf, input, wal_redo_timeout);
if res.is_err() {
// not all of these can be caused by this particular input, however these are so rare
// in tests so capture all.
self.record_and_log(&writebuf);
}
res
}
fn apply_wal_records0(
&self,
writebuf: &[u8],
input: MutexGuard<ProcessInput>,
wal_redo_timeout: Duration,
) -> anyhow::Result<Bytes> {
let mut proc = { input }; // TODO: remove this legacy rename, but this keep the patch small.
let mut nwrite = 0usize;
while nwrite < writebuf.len() {
let mut stdin_pollfds = [PollFd::new(&proc.stdin, PollFlags::POLLOUT)];
let n = loop {
match nix::poll::poll(&mut stdin_pollfds[..], wal_redo_timeout.as_millis() as i32) {
Err(nix::errno::Errno::EINTR) => continue,
res => break res,
}
}?;
if n == 0 {
anyhow::bail!("WAL redo timed out");
}
// If 'stdin' is writeable, do write.
let in_revents = stdin_pollfds[0].revents().unwrap();
if in_revents & (PollFlags::POLLERR | PollFlags::POLLOUT) != PollFlags::empty() {
nwrite += proc.stdin.write(&writebuf[nwrite..])?;
}
if in_revents.contains(PollFlags::POLLHUP) {
// We still have more data to write, but the process closed the pipe.
anyhow::bail!("WAL redo process closed its stdin unexpectedly");
}
}
let request_no = proc.n_requests;
proc.n_requests += 1;
drop(proc);
// To improve walredo performance we separate sending requests and receiving
// responses. Them are protected by different mutexes (output and input).
// If thread T1, T2, T3 send requests D1, D2, D3 to walredo process
// then there is not warranty that T1 will first granted output mutex lock.
// To address this issue we maintain number of sent requests, number of processed
// responses and ring buffer with pending responses. After sending response
// (under input mutex), threads remembers request number. Then it releases
// input mutex, locks output mutex and fetch in ring buffer all responses until
// its stored request number. The it takes correspondent element from
// pending responses ring buffer and truncate all empty elements from the front,
// advancing processed responses number.
let mut output = self.stdout.lock().unwrap();
let n_processed_responses = output.n_processed_responses;
while n_processed_responses + output.pending_responses.len() <= request_no {
// We expect the WAL redo process to respond with an 8k page image. We read it
// into this buffer.
let mut resultbuf = vec![0; BLCKSZ.into()];
let mut nresult: usize = 0; // # of bytes read into 'resultbuf' so far
while nresult < BLCKSZ.into() {
let mut stdout_pollfds = [PollFd::new(&output.stdout, PollFlags::POLLIN)];
// We do two things simultaneously: reading response from stdout
// and forward any logging information that the child writes to its stderr to the page server's log.
let n = loop {
match nix::poll::poll(
&mut stdout_pollfds[..],
wal_redo_timeout.as_millis() as i32,
) {
Err(nix::errno::Errno::EINTR) => continue,
res => break res,
}
}?;
if n == 0 {
anyhow::bail!("WAL redo timed out");
}
// If we have some data in stdout, read it to the result buffer.
let out_revents = stdout_pollfds[0].revents().unwrap();
if out_revents & (PollFlags::POLLERR | PollFlags::POLLIN) != PollFlags::empty() {
nresult += output.stdout.read(&mut resultbuf[nresult..])?;
}
if out_revents.contains(PollFlags::POLLHUP) {
anyhow::bail!("WAL redo process closed its stdout unexpectedly");
}
}
output
.pending_responses
.push_back(Some(Bytes::from(resultbuf)));
}
// Replace our request's response with None in `pending_responses`.
// Then make space in the ring buffer by clearing out any seqence of contiguous
// `None`'s from the front of `pending_responses`.
// NB: We can't pop_front() because other requests' responses because another
// requester might have grabbed the output mutex before us:
// T1: grab input mutex
// T1: send request_no 23
// T1: release input mutex
// T2: grab input mutex
// T2: send request_no 24
// T2: release input mutex
// T2: grab output mutex
// T2: n_processed_responses + output.pending_responses.len() <= request_no
// 23 0 24
// T2: enters poll loop that reads stdout
// T2: put response for 23 into pending_responses
// T2: put response for 24 into pending_resposnes
// pending_responses now looks like this: Front Some(response_23) Some(response_24) Back
// T2: takes its response_24
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Some(response_23) None Back
// T2: releases output mutex
// T1: grabs output mutex
// T1: n_processed_responses + output.pending_responses.len() > request_no
// 23 2 23
// T1: skips poll loop that reads stdout
// T1: takes its response_23
// pending_responses now looks like this: Front None None Back
// T2: does the while loop below
// pending_responses now looks like this: Front Back
// n_processed_responses now has value 25
let res = output.pending_responses[request_no - n_processed_responses]
.take()
.expect("we own this request_no, nobody else is supposed to take it");
while let Some(front) = output.pending_responses.front() {
if front.is_none() {
output.pending_responses.pop_front();
output.n_processed_responses += 1;
} else {
break;
}
}
Ok(res)
}
#[cfg(feature = "testing")]
fn record_and_log(&self, writebuf: &[u8]) {
use std::sync::atomic::Ordering;
let millis = std::time::SystemTime::now()
.duration_since(std::time::SystemTime::UNIX_EPOCH)
.unwrap()
.as_millis();
let seq = self.dump_sequence.fetch_add(1, Ordering::Relaxed);
// these files will be collected to an allure report
let filename = format!("walredo-{millis}-{}-{seq}.walredo", writebuf.len());
let path = self.conf.tenant_path(&self.tenant_shard_id).join(&filename);
let res = std::fs::OpenOptions::new()
.write(true)
.create_new(true)
.read(true)
.open(path)
.and_then(|mut f| f.write_all(writebuf));
// trip up allowed_errors
if let Err(e) = res {
tracing::error!(target=%filename, length=writebuf.len(), "failed to write out the walredo errored input: {e}");
} else {
tracing::error!(filename, "erroring walredo input saved");
}
}
#[cfg(not(feature = "testing"))]
fn record_and_log(&self, _: &[u8]) {}
}
impl Drop for WalRedoProcess {
fn drop(&mut self) {
self.child
.take()
.expect("we only do this once")
.kill_and_wait(WalRedoKillCause::WalRedoProcessDrop);
// no way to wait for stderr_logger_task from Drop because that is async only
}
}

View File

@@ -49,7 +49,7 @@ char *neon_auth_token;
int readahead_buffer_size = 128;
int flush_every_n_requests = 8;
int neon_protocol_version = 1;
int neon_protocol_version;
static int n_reconnect_attempts = 0;
static int max_reconnect_attempts = 60;
@@ -381,17 +381,7 @@ pageserver_connect(shardno_t shard_no, int elevel)
pfree(msg);
return false;
}
switch (neon_protocol_version)
{
case 2:
query = psprintf("pagestream_v2 %s %s", neon_tenant, neon_timeline);
break;
case 1:
query = psprintf("pagestream %s %s", neon_tenant, neon_timeline);
break;
default:
elog(ERROR, "unexpected neon_protocol_version %d", neon_protocol_version);
}
query = psprintf("pagestream %s %s", neon_tenant, neon_timeline);
ret = PQsendQuery(conn, query);
pfree(query);
if (ret != 1)
@@ -452,7 +442,7 @@ pageserver_connect(shardno_t shard_no, int elevel)
return false;
}
neon_shard_log(shard_no, LOG, "libpagestore: connected to '%s' with protocol version %d", connstr, neon_protocol_version);
neon_shard_log(shard_no, LOG, "libpagestore: connected to '%s'", connstr);
page_servers[shard_no].conn = conn;
page_servers[shard_no].wes = wes;
@@ -860,10 +850,8 @@ pg_init_libpagestore(void)
"Version of compute<->page server protocol",
NULL,
&neon_protocol_version,
1, /* default to old protocol for now */
1, /* min */
2, /* max */
PGC_SU_BACKEND,
NEON_PROTOCOL_VERSION, 1, 2,
PGC_USERSET,
0, /* no flags required */
NULL, NULL, NULL);

View File

@@ -28,6 +28,13 @@
#define MAX_SHARDS 128
#define MAX_PAGESERVER_CONNSTRING_SIZE 256
/*
* Currently, the protocol version is not sent to the server.
* So it is critical that format of existing commands is not changed.
* New protocol versions can just add new commands.
*/
#define NEON_PROTOCOL_VERSION 2
typedef enum
{
/* pagestore_client -> pagestore */
@@ -37,6 +44,12 @@ typedef enum
T_NeonDbSizeRequest,
T_NeonGetSlruSegmentRequest,
T_NeonExistsV2Request = 10, /* new protocol message tags start from 10 */
T_NeonNblocksV2Request,
T_NeonGetPageV2Request,
T_NeonDbSizeV2Request,
T_NeonGetSlruSegmentV2Request,
/* pagestore -> pagestore_client */
T_NeonExistsResponse = 100,
T_NeonNblocksResponse,

View File

@@ -280,8 +280,6 @@ static inline void prefetch_set_unused(uint64 ring_index);
static void neon_get_request_lsn(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blkno,
XLogRecPtr *request_lsn, XLogRecPtr *not_modified_since);
static bool neon_prefetch_response_usable(XLogRecPtr request_lsn, XLogRecPtr not_modified_since,
PrefetchRequest *slot);
static bool
compact_prefetch_buffers(void)
@@ -684,10 +682,6 @@ prefetch_set_unused(uint64 ring_index)
compact_prefetch_buffers();
}
/*
* Send one prefetch request to the pageserver. To wait for the response, call
* prefetch_wait_for().
*/
static void
prefetch_do_request(PrefetchRequest *slot, XLogRecPtr *force_request_lsn, XLogRecPtr *force_not_modified_since)
{
@@ -700,12 +694,14 @@ prefetch_do_request(PrefetchRequest *slot, XLogRecPtr *force_request_lsn, XLogRe
.blkno = slot->buftag.blockNum,
};
Assert(((force_request_lsn != NULL) == (force_not_modified_since != NULL)));
Assert(((force_request_lsn != NULL) == (force_not_modified_since != NULL)));
if (force_request_lsn)
{
request.req.lsn = *force_request_lsn;
request.req.not_modified_since = *force_not_modified_since;
slot->request_lsn = *force_request_lsn;
slot->not_modified_since = *force_not_modified_since;
}
else
{
@@ -714,9 +710,9 @@ prefetch_do_request(PrefetchRequest *slot, XLogRecPtr *force_request_lsn, XLogRe
slot->buftag.blockNum,
&request.req.lsn,
&request.req.not_modified_since);
slot->request_lsn = request.req.lsn;
slot->not_modified_since = request.req.not_modified_since;
}
slot->request_lsn = request.req.lsn;
slot->not_modified_since = request.req.not_modified_since;
Assert(slot->response == NULL);
Assert(slot->my_ring_index == MyPState->ring_unused);
@@ -759,7 +755,7 @@ prefetch_register_buffer(BufferTag tag, XLogRecPtr *force_request_lsn,
PrefetchRequest *slot;
PrfHashEntry *entry;
Assert(((force_request_lsn != NULL) == (force_not_modified_since != NULL)));
Assert(((force_request_lsn != NULL) == (force_not_modified_since != NULL)));
/* use an intermediate PrefetchRequest struct to ensure correct alignment */
req.buftag = tag;
@@ -778,13 +774,28 @@ Retry:
Assert(BUFFERTAGS_EQUAL(slot->buftag, tag));
/*
* If the caller specified a request LSN to use, only accept prefetch
* responses that satisfy that request.
* If we want a specific lsn, we do not accept requests that were made
* with a potentially different LSN.
*/
if (force_request_lsn)
{
if (!neon_prefetch_response_usable(*force_request_lsn,
*force_not_modified_since, slot))
/*
* The not_changed_since..request_lsn range of each request is
* effectively a claim that the page has not been modified between
* whose LSNs. Therefore, if the range of the old request in the
* queue overlaps with the new request, we know that the the page
* hasn't been modified in the union of the ranges. We can reuse
* the old request in that case.
*
* The new request's LSN should never be older than the old one,
* so don't bother checking that case.
*/
if (*force_request_lsn >= slot->not_modified_since &&
*force_not_modified_since <= slot->request_lsn)
{
/* the old request overlaps with the new one; keep it */
}
else
{
/* Wait for the old request to finish and discard it */
if (!prefetch_wait_for(ring_index))
@@ -915,7 +926,7 @@ page_server_request(void const *req)
BufferTag tag = {0};
shardno_t shard_no;
switch (messageTag(req))
switch (((NeonRequest *) req)->tag)
{
case T_NeonExistsRequest:
CopyNRelFileInfoToBufTag(tag, ((NeonExistsRequest *) req)->rinfo);
@@ -931,10 +942,11 @@ page_server_request(void const *req)
tag.blockNum = ((NeonGetPageRequest *) req)->blkno;
break;
default:
neon_log(ERROR, "Unexpected request tag: %d", messageTag(req));
neon_log(ERROR, "Unexpected request tag: %d", ((NeonRequest *) req)->tag);
}
shard_no = get_shard_number(&tag);
/*
* Current sharding model assumes that all metadata is present only at shard 0.
* We still need to call get_shard_no() to check if shard map is up-to-date.
@@ -970,6 +982,7 @@ nm_pack_request(NeonRequest *msg)
}
else
{
NeonMessageTag tag;
bool latest;
XLogRecPtr lsn;
@@ -984,29 +997,43 @@ nm_pack_request(NeonRequest *msg)
else
{
/*
* In the protocol V1, we cannot represent that we want to read
* page at LSN X, and we know that it hasn't been modified since
* Y. We can either use 'not_modified_lsn' as the request LSN, and
* risk getting an error if that LSN is too old and has already
* fallen out of the pageserver's GC horizon, or we can send
* 'request_lsn', causing the pageserver to possibly wait for the
* recent WAL to arrive unnecessarily. Or something in between. We
* choose to use the old LSN and risk GC errors, because that's
* what we've done historically.
* In the current protocol, we cannot represent that we want to read
* page at LSN X, and we know that it hasn't been modified since Y. We
* can either use 'not_modified_lsn' as the request LSN, and risk
* getting an error if that LSN is too old and has already fallen out
* of the pageserver's GC horizon, or we can send 'request_lsn',
* causing the pageserver to possibly wait for the recent WAL to
* arrive unnecessarily. Or something in between. We choose to use the
* old LSN and risk GC errors, because that's what we've done
* historically.
*/
latest = false;
lsn = msg->not_modified_since;
}
pq_sendbyte(&s, msg->tag);
switch(msg->tag)
{
case T_NeonExistsV2Request:
tag = T_NeonExistsRequest;
break;
case T_NeonNblocksV2Request:
tag = T_NeonNblocksRequest;
break;
case T_NeonGetPageV2Request:
tag = T_NeonGetPageRequest;
break;
case T_NeonDbSizeV2Request:
tag = T_NeonDbSizeRequest;
break;
case T_NeonGetSlruSegmentV2Request:
tag = T_NeonGetSlruSegmentRequest;
break;
}
pq_sendbyte(&s, tag);
pq_sendbyte(&s, latest);
pq_sendint64(&s, lsn);
}
/*
* The rest of the request messages are the same between protocol V1 and
* V2
*/
switch (messageTag(msg))
{
/* pagestore_client -> pagestore */
@@ -1533,24 +1560,18 @@ static void
neon_get_request_lsn(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blkno,
XLogRecPtr *request_lsn, XLogRecPtr *not_modified_since)
{
XLogRecPtr last_written_lsn;
last_written_lsn = GetLastWrittenLSN(rinfo, forknum, blkno);
last_written_lsn = nm_adjust_lsn(last_written_lsn);
Assert(last_written_lsn != InvalidXLogRecPtr);
if (RecoveryInProgress())
{
/* Request the page at the last replayed LSN. */
*request_lsn = GetXLogReplayRecPtr(NULL);
*not_modified_since = last_written_lsn;
Assert(last_written_lsn <= *request_lsn);
*not_modified_since = GetLastWrittenLSN(rinfo, forknum, blkno);
neon_log(DEBUG1, "neon_get_request_lsn request lsn %X/%X, not_modified_since %X/%X",
LSN_FORMAT_ARGS(*request_lsn), LSN_FORMAT_ARGS(*not_modified_since));
}
else
{
XLogRecPtr last_written_lsn;
XLogRecPtr flushlsn;
/*
@@ -1559,9 +1580,13 @@ neon_get_request_lsn(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blkno,
* must still in the buffer cache, so our request cannot concern
* those.
*/
last_written_lsn = GetLastWrittenLSN(rinfo, forknum, blkno);
Assert(last_written_lsn != InvalidXLogRecPtr);
neon_log(DEBUG1, "neon_get_request_lsn GetLastWrittenLSN lsn %X/%X ",
LSN_FORMAT_ARGS(last_written_lsn));
last_written_lsn = nm_adjust_lsn(last_written_lsn);
/*
* Is it possible that the last-written LSN is ahead of last flush
* LSN? Generally not, we shouldn't evict a page from the buffer cache
@@ -1587,99 +1612,15 @@ neon_get_request_lsn(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blkno,
/*
* Request the latest version of the page. The most up-to-date request
* LSN we could use would be the current insert LSN, but to avoid the
* overhead of looking it up, use 'flushlsn' instead. This relies on
* the assumption that if the page was modified since the last WAL
* flush, it should still be in the buffer cache, and we wouldn't be
* requesting it.
* overhead of looking it up, use 'flushlsn' instead. This relies on the
* assumption that if the page was modified since the last WAL flush, it
* should still be in the buffer cache, and we wouldn't be requesting it.
*/
*request_lsn = flushlsn;
*not_modified_since = last_written_lsn;
}
}
/*
* neon_prefetch_response_usable -- Can a new request be satisfied by old one?
*
* This is used to check if the response to a prefetch request can be used to
* satisfy a page read now.
*/
static bool
neon_prefetch_response_usable(XLogRecPtr request_lsn, XLogRecPtr not_modified_since,
PrefetchRequest *slot)
{
/* sanity check the LSN's on the old and the new request */
Assert(request_lsn >= not_modified_since);
Assert(slot->request_lsn >= slot->not_modified_since);
Assert(slot->status != PRFS_UNUSED);
/*
* The new request's LSN should never be older than the old one. This
* could be an Assert, except that for testing purposes, we do provide an
* interface in neon_test_utils to fetch pages at arbitary LSNs, which
* violates this.
*
* Similarly, the not_modified_since value calculated for a page should
* never move backwards. This assumption is a bit fragile; if we updated
* the last-written cache when we read in a page, for example, then it
* might. But as the code stands, it should not.
*
* (If two backends issue a request at the same time, they might race and
* calculate LSNs "out of order" with each other, but the prefetch queue
* is backend-private at the moment.)
*/
if (request_lsn < slot->request_lsn || not_modified_since < slot->not_modified_since)
{
ereport(LOG,
(errcode(ERRCODE_IO_ERROR),
errmsg(NEON_TAG "request with unexpected LSN after prefetch"),
errdetail("Request %X/%X not_modified_since %X/%X, prefetch %X/%X not_modified_since %X/%X)",
LSN_FORMAT_ARGS(request_lsn), LSN_FORMAT_ARGS(not_modified_since),
LSN_FORMAT_ARGS(slot->request_lsn), LSN_FORMAT_ARGS(slot->not_modified_since))));
return false;
}
/*---
* Each request to the pageserver carries two LSN values:
* `not_modified_since` and `request_lsn`. The (not_modified_since,
* request_lsn] range of each request is effectively a claim that the page
* has not been modified between those LSNs. If the range of the old
* request in the queue overlaps with the new request, we know that the
* page hasn't been modified in the union of the ranges. We can use the
* response to old request to satisfy the new request in that case. For
* example:
*
* 100 500
* Old request: +--------+
*
* 400 800
* New request: +--------+
*
* The old request claims that the page was not modified between LSNs 100
* and 500, and the second claims that it was not modified between 400 and
* 800. Together they mean that the page was not modified between 100 and
* 800. Therefore the response to the old request is also valid for the
* new request.
*
* This logic also holds at the boundary case that the old request's LSN
* matches the new request's not_modified_since LSN exactly:
*
* 100 500
* Old request: +--------+
*
* 500 900
* New request: +--------+
*
* The response to the old request is the page as it was at LSN 500, and
* the page hasn't been changed in the range (500, 900], therefore the
* response is valid also for the new request.
*/
/* this follows from the checks above */
Assert(request_lsn >= slot->not_modified_since);
return not_modified_since <= slot->request_lsn;
}
/*
* neon_exists() -- Does the physical file exist?
*/
@@ -2234,7 +2175,19 @@ neon_read_at_lsn(NRelFileInfo rinfo, ForkNumber forkNum, BlockNumber blkno,
if (entry != NULL)
{
slot = entry->slot;
if (neon_prefetch_response_usable(request_lsn, not_modified_since, slot))
/*
* The not_changed_since..request_lsn range of each request is
* effectively a claim that the page has not been modified between
* those LSNs. Therefore, if the range of the old request in the queue
* overlaps with the new request, we know that the the page hasn't
* been modified in the union of the ranges. We can reuse the old
* request in that case.
*
* The new request's LSN should never be older than the old one,
* so don't bother checking that case.
*/
if (request_lsn >= slot->not_modified_since &&
not_modified_since <= slot->request_lsn)
{
ring_index = slot->my_ring_index;
pgBufferUsage.prefetch.hits += 1;
@@ -2613,7 +2566,7 @@ neon_dbsize(Oid dbNode)
NeonResponse *resp;
int64 db_size;
XLogRecPtr request_lsn,
not_modified_since;
not_modified_since;
NRelFileInfo dummy_node = {0};
neon_get_request_lsn(dummy_node, MAIN_FORKNUM, REL_METADATA_PSEUDO_BLOCKNO,
@@ -2898,17 +2851,7 @@ neon_read_slru_segment(SMgrRelation reln, const char* path, int segno, void* buf
not_modified_since;
if (RecoveryInProgress())
{
request_lsn = GetXLogReplayRecPtr(NULL);
if (request_lsn == InvalidXLogRecPtr)
{
/*
* This happens in neon startup, we start up without replaying any
* records.
*/
request_lsn = GetRedoStartLsn();
}
}
else
request_lsn = GetXLogInsertRecPtr();
request_lsn = nm_adjust_lsn(request_lsn);
@@ -3089,9 +3032,9 @@ neon_extend_rel_size(NRelFileInfo rinfo, ForkNumber forknum, BlockNumber blkno,
NeonNblocksResponse *nbresponse;
NeonNblocksRequest request = {
.req = (NeonRequest) {
.tag = T_NeonNblocksRequest,
.lsn = end_recptr,
.not_modified_since = end_recptr,
.tag = T_NeonNblocksRequest,
},
.rinfo = rinfo,
.forknum = forknum,

View File

@@ -7,7 +7,7 @@ OBJS = \
neontest.o
EXTENSION = neon_test_utils
DATA = neon_test_utils--1.1.sql
DATA = neon_test_utils--1.0.sql
PGFILEDESC = "neon_test_utils - helpers for neon testing and debugging"
PG_CONFIG = pg_config

View File

@@ -31,12 +31,12 @@ AS 'MODULE_PATHNAME', 'clear_buffer_cache'
LANGUAGE C STRICT
PARALLEL UNSAFE;
CREATE FUNCTION get_raw_page_at_lsn(relname text, forkname text, blocknum int8, request_lsn pg_lsn, not_modified_since pg_lsn)
CREATE FUNCTION get_raw_page_at_lsn(relname text, forkname text, blocknum int8, lsn pg_lsn)
RETURNS bytea
AS 'MODULE_PATHNAME', 'get_raw_page_at_lsn'
LANGUAGE C PARALLEL UNSAFE;
CREATE FUNCTION get_raw_page_at_lsn(tbspc oid, db oid, relfilenode oid, forknum int8, blocknum int8, request_lsn pg_lsn, not_modified_since pg_lsn)
CREATE FUNCTION get_raw_page_at_lsn(tbspc oid, db oid, relfilenode oid, forknum int8, blocknum int8, lsn pg_lsn)
RETURNS bytea
AS 'MODULE_PATHNAME', 'get_raw_page_at_lsn_ex'
LANGUAGE C PARALLEL UNSAFE;

View File

@@ -1,6 +1,6 @@
# neon_test_utils extension
comment = 'helpers for neon testing and debugging'
default_version = '1.1'
default_version = '1.0'
module_pathname = '$libdir/neon_test_utils'
relocatable = true
trusted = true

View File

@@ -299,11 +299,8 @@ get_raw_page_at_lsn(PG_FUNCTION_ARGS)
text *forkname;
uint32 blkno;
XLogRecPtr request_lsn;
XLogRecPtr not_modified_since;
if (PG_NARGS() != 5)
elog(ERROR, "unexpected number of arguments in SQL function signature");
bool request_latest = PG_ARGISNULL(3);
uint64 read_lsn = request_latest ? GetXLogInsertRecPtr() : PG_GETARG_INT64(3);
if (PG_ARGISNULL(0) || PG_ARGISNULL(1) || PG_ARGISNULL(2))
PG_RETURN_NULL();
@@ -312,9 +309,6 @@ get_raw_page_at_lsn(PG_FUNCTION_ARGS)
forkname = PG_GETARG_TEXT_PP(1);
blkno = PG_GETARG_UINT32(2);
request_lsn = PG_ARGISNULL(3) ? GetXLogInsertRecPtr() : PG_GETARG_LSN(3);
not_modified_since = PG_ARGISNULL(4) ? request_lsn : PG_GETARG_LSN(4);
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
@@ -367,7 +361,7 @@ get_raw_page_at_lsn(PG_FUNCTION_ARGS)
SET_VARSIZE(raw_page, BLCKSZ + VARHDRSZ);
raw_page_data = VARDATA(raw_page);
neon_read_at_lsn(InfoFromRelation(rel), forknum, blkno, request_lsn, not_modified_since, raw_page_data);
neon_read_at_lsn(InfoFromRelation(rel), forknum, blkno, read_lsn, request_latest, raw_page_data);
relation_close(rel, AccessShareLock);
@@ -386,9 +380,6 @@ get_raw_page_at_lsn_ex(PG_FUNCTION_ARGS)
{
char *raw_page_data;
if (PG_NARGS() != 7)
elog(ERROR, "unexpected number of arguments in SQL function signature");
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
@@ -412,20 +403,18 @@ get_raw_page_at_lsn_ex(PG_FUNCTION_ARGS)
};
ForkNumber forknum = PG_GETARG_UINT32(3);
uint32 blkno = PG_GETARG_UINT32(4);
XLogRecPtr request_lsn;
XLogRecPtr not_modified_since;
bool request_latest = PG_ARGISNULL(5);
uint64 read_lsn = request_latest ? GetXLogInsertRecPtr() : PG_GETARG_INT64(5);
/* Initialize buffer to copy to */
bytea *raw_page = (bytea *) palloc(BLCKSZ + VARHDRSZ);
request_lsn = PG_ARGISNULL(5) ? GetXLogInsertRecPtr() : PG_GETARG_LSN(5);
not_modified_since = PG_ARGISNULL(6) ? request_lsn : PG_GETARG_LSN(6);
SET_VARSIZE(raw_page, BLCKSZ + VARHDRSZ);
raw_page_data = VARDATA(raw_page);
neon_read_at_lsn(rinfo, forknum, blkno, request_lsn, not_modified_since, raw_page_data);
neon_read_at_lsn(rinfo, forknum, blkno, read_lsn, request_latest, raw_page_data);
PG_RETURN_BYTEA_P(raw_page);
}
}

156
poetry.lock generated
View File

@@ -2,87 +2,87 @@
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version = "3.9.2"
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]
[package.dependencies]
@@ -2900,4 +2900,4 @@ cffi = ["cffi (>=1.11)"]
[metadata]
lock-version = "2.0"
python-versions = "^3.9"
content-hash = "b3452b50901123fd5f2c385ce8a0c1c492296393b8a7926a322b6df0ea3ac572"
content-hash = "df7161da4fdc3cba0a445176fc9dda2a0e8a53e13a7aa8a864385ca259381b41"

View File

@@ -2,15 +2,8 @@ mod classic;
mod hacks;
mod link;
use std::net::IpAddr;
use std::sync::Arc;
use std::time::Duration;
use ipnet::{Ipv4Net, Ipv6Net};
pub use link::LinkAuthError;
use tokio::io::{AsyncRead, AsyncWrite};
use tokio_postgres::config::AuthKeys;
use tracing::{info, warn};
use crate::auth::credentials::check_peer_addr_is_in_list;
use crate::auth::validate_password_and_exchange;
@@ -23,7 +16,6 @@ use crate::intern::EndpointIdInt;
use crate::metrics::Metrics;
use crate::proxy::connect_compute::ComputeConnectBackend;
use crate::proxy::NeonOptions;
use crate::rate_limiter::{BucketRateLimiter, RateBucketInfo};
use crate::stream::Stream;
use crate::{
auth::{self, ComputeUserInfoMaybeEndpoint},
@@ -36,6 +28,9 @@ use crate::{
stream, url,
};
use crate::{scram, EndpointCacheKey, EndpointId, Normalize, RoleName};
use std::sync::Arc;
use tokio::io::{AsyncRead, AsyncWrite};
use tracing::{info, warn};
/// Alternative to [`std::borrow::Cow`] but doesn't need `T: ToOwned` as we don't need that functionality
pub enum MaybeOwned<'a, T> {
@@ -181,45 +176,11 @@ impl TryFrom<ComputeUserInfoMaybeEndpoint> for ComputeUserInfo {
}
}
#[derive(PartialEq, PartialOrd, Hash, Eq, Ord, Debug, Copy, Clone)]
pub struct MaskedIp(IpAddr);
impl MaskedIp {
fn new(value: IpAddr, prefix: u8) -> Self {
match value {
IpAddr::V4(v4) => Self(IpAddr::V4(
Ipv4Net::new(v4, prefix).map_or(v4, |x| x.trunc().addr()),
)),
IpAddr::V6(v6) => Self(IpAddr::V6(
Ipv6Net::new(v6, prefix).map_or(v6, |x| x.trunc().addr()),
)),
}
}
}
// This can't be just per IP because that would limit some PaaS that share IP addresses
pub type AuthRateLimiter = BucketRateLimiter<(EndpointIdInt, MaskedIp)>;
impl RateBucketInfo {
/// All of these are per endpoint-maskedip pair.
/// Context: 4096 rounds of pbkdf2 take about 1ms of cpu time to execute (1 milli-cpu-second or 1mcpus).
///
/// First bucket: 1000mcpus total per endpoint-ip pair
/// * 4096000 requests per second with 1 hash rounds.
/// * 1000 requests per second with 4096 hash rounds.
/// * 6.8 requests per second with 600000 hash rounds.
pub const DEFAULT_AUTH_SET: [Self; 3] = [
Self::new(1000 * 4096, Duration::from_secs(1)),
Self::new(600 * 4096, Duration::from_secs(60)),
Self::new(300 * 4096, Duration::from_secs(600)),
];
}
impl AuthenticationConfig {
pub fn check_rate_limit(
&self,
ctx: &mut RequestMonitoring,
config: &AuthenticationConfig,
secret: AuthSecret,
endpoint: &EndpointId,
is_cleartext: bool,
@@ -240,13 +201,9 @@ impl AuthenticationConfig {
1
};
let limit_not_exceeded = self.rate_limiter.check(
(
endpoint_int,
MaskedIp::new(ctx.peer_addr, config.rate_limit_ip_subnet),
),
password_weight,
);
let limit_not_exceeded = self
.rate_limiter
.check((endpoint_int, ctx.peer_addr), password_weight);
if !limit_not_exceeded {
warn!(
@@ -314,7 +271,6 @@ async fn auth_quirks(
let secret = match secret {
Some(secret) => config.check_rate_limit(
ctx,
config,
secret,
&info.endpoint,
unauthenticated_password.is_some() || allow_cleartext,
@@ -517,7 +473,7 @@ impl ComputeConnectBackend for BackendType<'_, ComputeCredentials, &()> {
#[cfg(test)]
mod tests {
use std::{net::IpAddr, sync::Arc, time::Duration};
use std::sync::Arc;
use bytes::BytesMut;
use fallible_iterator::FallibleIterator;
@@ -530,7 +486,7 @@ mod tests {
use tokio::io::{AsyncRead, AsyncReadExt, AsyncWriteExt};
use crate::{
auth::{backend::MaskedIp, ComputeUserInfoMaybeEndpoint, IpPattern},
auth::{ComputeUserInfoMaybeEndpoint, IpPattern},
config::AuthenticationConfig,
console::{
self,
@@ -539,12 +495,12 @@ mod tests {
},
context::RequestMonitoring,
proxy::NeonOptions,
rate_limiter::RateBucketInfo,
rate_limiter::{AuthRateLimiter, RateBucketInfo},
scram::ServerSecret,
stream::{PqStream, Stream},
};
use super::{auth_quirks, AuthRateLimiter};
use super::auth_quirks;
struct Auth {
ips: Vec<IpPattern>,
@@ -585,7 +541,6 @@ mod tests {
scram_protocol_timeout: std::time::Duration::from_secs(5),
rate_limiter_enabled: true,
rate_limiter: AuthRateLimiter::new(&RateBucketInfo::DEFAULT_AUTH_SET),
rate_limit_ip_subnet: 64,
});
async fn read_message(r: &mut (impl AsyncRead + Unpin), b: &mut BytesMut) -> PgMessage {
@@ -597,51 +552,6 @@ mod tests {
}
}
#[test]
fn masked_ip() {
let ip_a = IpAddr::V4([127, 0, 0, 1].into());
let ip_b = IpAddr::V4([127, 0, 0, 2].into());
let ip_c = IpAddr::V4([192, 168, 1, 101].into());
let ip_d = IpAddr::V4([192, 168, 1, 102].into());
let ip_e = IpAddr::V6("abcd:abcd:abcd:abcd:abcd:abcd:abcd:abcd".parse().unwrap());
let ip_f = IpAddr::V6("abcd:abcd:abcd:abcd:1234:abcd:abcd:abcd".parse().unwrap());
assert_ne!(MaskedIp::new(ip_a, 64), MaskedIp::new(ip_b, 64));
assert_ne!(MaskedIp::new(ip_a, 32), MaskedIp::new(ip_b, 32));
assert_eq!(MaskedIp::new(ip_a, 30), MaskedIp::new(ip_b, 30));
assert_eq!(MaskedIp::new(ip_c, 30), MaskedIp::new(ip_d, 30));
assert_ne!(MaskedIp::new(ip_e, 128), MaskedIp::new(ip_f, 128));
assert_eq!(MaskedIp::new(ip_e, 64), MaskedIp::new(ip_f, 64));
}
#[test]
fn test_default_auth_rate_limit_set() {
// these values used to exceed u32::MAX
assert_eq!(
RateBucketInfo::DEFAULT_AUTH_SET,
[
RateBucketInfo {
interval: Duration::from_secs(1),
max_rpi: 1000 * 4096,
},
RateBucketInfo {
interval: Duration::from_secs(60),
max_rpi: 600 * 4096 * 60,
},
RateBucketInfo {
interval: Duration::from_secs(600),
max_rpi: 300 * 4096 * 600,
}
]
);
for x in RateBucketInfo::DEFAULT_AUTH_SET {
let y = x.to_string().parse().unwrap();
assert_eq!(x, y);
}
}
#[tokio::test]
async fn auth_quirks_scram() {
let (mut client, server) = tokio::io::duplex(1024);

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