rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-01-14 17:02:56 +00:00
Code Issues Packages Projects Releases Wiki Activity

Check if page is not out of relation size in getpage for VM/FSM forks

Browse Source
This commit is contained in:
Konstantin Knizhnik
2025-05-09 18:15:18 +03:00
parent ca4d758504
commit 374495c041
1 changed files with 40 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
pageserver/src/pgdatadir_mapping.rs
View File

@@ -275,6 +275,46 @@ impl Timeline {
continue;
}
// Check relation size only for VM/FSM forks
if tag.forknum == FSM_FORKNUM || tag.forknum == VISIBILITYMAP_FORKNUM {
let nblocks = {
let ctx = RequestContextBuilder::from(&ctx)
.perf_span(|crnt_perf_span| {
info_span!(
target: PERF_TRACE_TARGET,
parent: crnt_perf_span,
"GET_REL_SIZE",
reltag=%tag,
lsn=%lsn,
)
})
.attached_child();
match self
.get_rel_size(*tag, Version::Lsn(lsn), &ctx)
.maybe_perf_instrument(&ctx, |crnt_perf_span| crnt_perf_span.clone())
.await
{
Ok(nblocks) => nblocks,
Err(err) => {
result_slots[response_slot_idx].write(Err(err));
slots_filled += 1;
continue;
}
}
};
if *blknum >= nblocks {
debug!(
"read beyond EOF at {} blk {} at {}, size is {}: returning all-zeros page",
tag, blknum, lsn, nblocks
);
result_slots[response_slot_idx].write(Ok(ZERO_PAGE.clone()));
slots_filled += 1;
continue;
}
}
let key = rel_block_to_key(*tag, *blknum);
let ctx = RequestContextBuilder::from(&ctx)