| From: | Peter Geoghegan <pg(at)bowt(dot)ie> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alexander Lakhin <exclusion(at)gmail(dot)com>, Chao Li <li(dot)evan(dot)chao(at)gmail(dot)com>, Kirill Reshke <reshkekirill(at)gmail(dot)com>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, Melanie Plageman <melanieplageman(at)gmail(dot)com>, Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org, Thomas Munro <thomas(dot)munro(at)gmail(dot)com>, Noah Misch <noah(at)leadboat(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Michael Paquier <michael(dot)paquier(at)gmail(dot)com> |
| Subject: | Re: Buffer locking is special (hints, checksums, AIO writes) |
| Date: | 2026-01-29 17:50:38 |
| Message-ID: | CAH2-WznefBra4g8pGxrH8Ch00ZP29jkGFCQLRUJszxx+62XLGg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Jan 29, 2026 at 12:42 PM Andres Freund <andres(at)anarazel(dot)de> wrote:
> > - /*
> > - * We better not already hold a lock on the buffer.
> > - */
> > Assert(entry->data.lockmode == BUFFER_LOCK_UNLOCK);
> >
>
> Err, this should have been removed, I accidentally re-added the hunk while
> experimenting.
I've been running into this assertion failure from time to time while
working on index prefetching. It seems to happen after a hard crash.
I've just been running initdb whenever it happens. It would be nice to
not have to do this again.
--
Peter Geoghegan
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