Re: intermittently fails

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Thomas Munro <thomas(dot)munro(at)gmail(dot)com>
Cc: Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, tgl(at)sss(dot)pgh(dot)pa(dot)us, pg(at)bowt(dot)ie, pgsql-hackers(at)lists(dot)postgresql(dot)org, craig(dot)ringer(at)enterprisedb(dot)com, robertmhaas(at)gmail(dot)com
Subject: Re: intermittently fails
Date: 2023-01-25 00:02:46
Message-ID: Y9BxphkLcwxKT5W/
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On Wed, Jan 25, 2023 at 12:40:02PM +1300, Thomas Munro wrote:
> I remembered this thread after seeing the failure of Michael's new
> build farm animal "tanager". I think we need to solve this somehow...

Well, this host has a problem, for what looks like a kernel issue, I
guess.. This is repeatable across all the branches, randomly, with
various errors with the POSIX DSM implementation:
# [63cf68b7.5e5a:1] ERROR: could not open shared memory segment "/PostgreSQL.543738922": No such file or directory
# [63cf68b7.5e58:6] ERROR: could not open shared memory segment "/PostgreSQL.543738922": No such file or directory
dynamic_shared_memory_type should be using posix in this case.
Switching to mmap may help, perhaps.. I need to test it.

Anyway, sorry for the noise on this one.

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