Horton
Menu

Re: VM corruption on standby

Andrey Borodin <x4mmm@yandex-team.ru>

View thread
From: Andrey Borodin <x4mmm@yandex-team.ru>
To: Aleksander Alekseev <aleksander@tigerdata.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Melanie Plageman <melanieplageman@gmail.com>
Date: 2025-08-07T16:00:35Z
Lists: pgsql-hackers 

> On 7 Aug 2025, at 18:54, Andrey Borodin <x4mmm@yandex-team.ru> wrote:
> 
> moved injection point to a very safe position.

BTW, your fix also fixes ALL_FROZEN stuff, just because WAL for heap insert is already emitted by the time of -9.

I want to emphasize that it seems to me that position of injection point is not a hint, but rather coincidental.

I concur that all other users of visibilitymap_clear() likely will need to be fixed. But only when we have a good picture what exactly is broken.


Best regards, Andrey Borodin.

Commits

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

  1. Revert "Get rid of WALBufMappingLock"

  2. Get rid of WALBufMappingLock

  3. Split WaitEventSet functions to separate source file

  4. Add WL_EXIT_ON_PM_DEATH pseudo-event.