rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-05-24 08:30:37 +00:00
Code Issues Packages Projects Releases Wiki Activity

pagectl: list layers for given key in decreasing LSN order (#11799)

Browse Source 
Adds an extra key CLI arg to `pagectl layer list-layer`. When provided,
only layers with key ranges containing the key will be listed in
decreasing LSN order (indices are preserved for `dump-layer`).
This commit is contained in:
Vlad Lazar
2025-05-01 16:56:43 +01:00
committed by GitHub
parent f999632327
commit 16d594b7b3
1 changed files with 28 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

37
pageserver/ctl/src/layers.rs
View File

@@ -10,6 +10,7 @@ use pageserver::tenant::storage_layer::{DeltaLayer, ImageLayer, delta_layer, ima
use pageserver::tenant::{TENANTS_SEGMENT_NAME, TIMELINES_SEGMENT_NAME};
use pageserver::virtual_file::api::IoMode;
use pageserver::{page_cache, virtual_file};
use pageserver_api::key::Key;
use utils::id::{TenantId, TimelineId};
use crate::layer_map_analyzer::parse_filename;
@@ -27,6 +28,7 @@ pub(crate) enum LayerCmd {
path: PathBuf,
tenant: String,
timeline: String,
key: Option<Key>,
},
/// Dump all information of a layer file
DumpLayer {
@@ -100,6 +102,7 @@ pub(crate) async fn main(cmd: &LayerCmd) -> Result<()> {
path,
tenant,
timeline,
key,
} => {
let timeline_path = path
.join(TENANTS_SEGMENT_NAME)
@@ -107,21 +110,37 @@ pub(crate) async fn main(cmd: &LayerCmd) -> Result<()> {
.join(TIMELINES_SEGMENT_NAME)
.join(timeline);
let mut idx = 0;
let mut to_print = Vec::default();
for layer in fs::read_dir(timeline_path)? {
let layer = layer?;
if let Ok(layer_file) = parse_filename(&layer.file_name().into_string().unwrap()) {
println!(
"[{:3}] key:{}-{}\n lsn:{}-{}\n delta:{}",
idx,
layer_file.key_range.start,
layer_file.key_range.end,
layer_file.lsn_range.start,
layer_file.lsn_range.end,
layer_file.is_delta,
);
if let Some(key) = key {
if layer_file.key_range.start <= *key && *key < layer_file.key_range.end {
to_print.push((idx, layer_file));
}
} else {
to_print.push((idx, layer_file));
}
idx += 1;
}
}
if key.is_some() {
to_print
.sort_by_key(|(_idx, layer_file)| std::cmp::Reverse(layer_file.lsn_range.end));
}
for (idx, layer_file) in to_print {
println!(
"[{:3}] key:{}-{}\n lsn:{}-{}\n delta:{}",
idx,
layer_file.key_range.start,
layer_file.key_range.end,
layer_file.lsn_range.start,
layer_file.lsn_range.end,
layer_file.is_delta,
);
}
Ok(())
}
LayerCmd::DumpLayer {