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

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Matthias van de Meent <boekewurm+postgres(at)gmail(dot)com>
Cc: Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: standby recovery fails (tablespace related) (tentative patch and discussion)
Date: 2022-07-28 21:57:12
Message-ID: 3560219.1659045432@sss.pgh.pa.us
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Matthias van de Meent <boekewurm+postgres(at)gmail(dot)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.

regards, tom lane

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