Re: VM corruption on standby

Kirill Reshke <reshkekirill@gmail.com>

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From: Kirill Reshke <reshkekirill@gmail.com>

To: Andrey Borodin <x4mmm@yandex-team.ru>

Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Melanie Plageman <melanieplageman@gmail.com>

Date: 2025-08-12T06:26:12Z

Lists: pgsql-hackers

Attachments

checkpointer.strace.txt (text/plain)

On Tue, 12 Aug 2025 at 10:38, I wrote:
> CHECKPOINT
> somehow manages to flush the heap page  when instance kill-9-ed.

This corruption does not reproduce without CHECKPOINT call, however I
do not see any suspicious syscal that CHECKPOINT's process does.
It does not write anything to disk here, isn’t ? PFA strace.

-- 
Best regards,
Kirill Reshke

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Revert "Get rid of WALBufMappingLock"
- 2ce6abdf5085 18.0 landed
- c13070a27b63 19 (unreleased) landed
Get rid of WALBufMappingLock
- bc22dc0e0ddc 18.0 cited
Split WaitEventSet functions to separate source file
- 393e0d231405 18.0 cited
Add WL_EXIT_ON_PM_DEATH pseudo-event.
- cfdf4dc4fc96 12.0 cited