On Mon, Sep 12, 2022 at 11:53:14AM +0900, Michael Paquier wrote:
> On Mon, Sep 12, 2022 at 02:34:48PM +1200, Thomas Munro wrote:
> > On Mon, Sep 12, 2022 at 2:27 PM Justin Pryzby <pryzby@telsasoft.com> wrote:
> >> Yeah ... I just realized that I've already forgotten the relevant
> >> chronology.
> >>
> >> The io_concurrency bugfix wasn't included in 15b4, so (if I understood
> >> you correctly), that might explain these symptoms - right ?
> >
> > Yeah.
>
> Could you double-check if the issues you are seeing persist after
> syncing up with the latest point of REL_15_STABLE? For now, I have
> added an open item just to be on the safe side.
After another round of restore-from-backup, and sqlsmith-with-kill-9, it
looks to be okay. The issue was evidently another possible symptom of
the recovery prefetch bug, which is already fixed in REL_15_STABLE (but
not in pg15b4).
--
Justin