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Re: VM corruption on standby

Thomas Munro <thomas.munro@gmail.com>

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From: Thomas Munro <thomas.munro@gmail.com>
To: Tom Lane <tgl@sss.pgh.pa.us>
Cc: Kirill Reshke <reshkekirill@gmail.com>, Andrey Borodin <x4mmm@yandex-team.ru>, PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>, Melanie Plageman <melanieplageman@gmail.com>, Michael Paquier <michael@paquier.xyz>
Date: 2025-08-21T05:15:25Z
Lists: pgsql-hackers 
On Wed, Aug 20, 2025 at 3:47 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Having said that, we should in any case have a better story on
> what WaitEventSetWait should do after detecting postmaster death.
> So I'm all for trying to avoid the proc_exit path if we can
> design a better answer.

Yeah.  I've posted a concept patch in a new thread:

https://www.postgresql.org/message-id/flat/CA%2BhUKGKp0kTpummCPa97%2BWFJTm%2BuYzQ9Ex8UMdH8ZXkLwO0QgA%40mail.gmail.com

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.