Re: autovacuum launcher crash: assert in pgstat_count_io_op (IOOP_EXTEND on pg_database's VM)

On Thu, Jun 25, 2026 at 2:59 AM Melanie Plageman
<melanieplageman(at)gmail(dot)com> wrote:
>
> On Tue, Jun 2, 2026 at 10:03 AM Ewan Young <kdbase(dot)hack(at)gmail(dot)com> wrote:
> >
> > That all makes sense — your plan sounds right to me. Happy to go with
> > relaxing pgstat_tracks_io_op() for 19 and leaving the
> > table_beginscan_catalog() flags work for 20, and to drop my patch.
> >
> > Reproducer attached.
> >
> > Thanks so much for the quick and thoughtful response — really appreciate it!
>
> Thanks for the report and reproducer! The fix for 19 we discussed is
> now committed in 4abf411e232 (and I've marked the open item closed).
> I've added a note to my personal to-do for 20 to enable setting the VM
> on-access for catalog tables, but feel free to propose a patch if
> you'd like.

Thanks, Melanie — glad it's resolved, and thanks for the turnaround
and the credit!

>
> - Melanie

Regards,
Ewan Young