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Date: Wed, 8 Apr 2026 14:57:01 -0400
From: Andres Freund <andres@anarazel.de>
To: Jakub Wartak <jakub.wartak@enterprisedb.com>
Cc: PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>
Subject: Re: Failing test_aio tests due to too low(illegal?) segsize_blocks
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Hi,

On 2026-04-08 08:51:30 +0200, Jakub Wartak wrote:
> For some reason I've ended up using -Dsegsize_blocks=4 and I've started
> getting ninja test errors after getting back from vacation leave like
> below (so this test was included only since then):

It's IIRC not the only test that fails if you do that.


> .cirrus file show usage of segsize_blocks=6, and also 8 works fine without
> errors, so it's just nuisance on my side, but it took some minutes for me
> to realize this and I'll just ask maybe we should just block usage of
> RELSEG_SIZE < 6 blocks in meson/configure? (patch attached)

-1.  I find it quite useful for testing some edge cases to be able to
configure with less.

If you really care, I'd be ok with a patch that makes the relevant test_aio
tests errors out with if it's set to a too low value...

Greetings,

Andres Freund