Re: standby recovery fails (tablespace related) (tentative patch and discussion)

On Fri, Jul 29, 2022 at 9:57 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Matthias van de Meent <boekewurm+postgres@gmail.com> writes:
> > I'd like to bring to your attention that the test that was introduced
> > with 9e4f914b seem to be flaky in FreeBSD 13 in the CFBot builds: it
> > sometimes times out while waiting for the secondary to catch up. Or,
> > at least I think it does, and I'm not too familiar with TAP failure
> > outputs: it returns with error code 29 and logs that I'd expect when
> > the timeout is reached.
>
> It's also failing in the buildfarm, eg
>
> https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=conchuela&dt=2022-07-28%2020%3A57%3A50
>
> Looks like only conchuela so far, reinforcing the idea that we're
> only seeing it on FreeBSD.  I'd tentatively bet on a timing problem
> that requires some FreeBSD scheduling quirk to manifest; we've seen
> such quirks before.

Maybe it just needs a replication slot?  I see:

ERROR:  requested WAL segment 000000010000000000000003 has already been removed