Re: pgsql: Revert online data checksum transitions

From: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
To: Daniel Gustafsson <daniel(at)yesql(dot)se>, Manuel Reyes Bravo <manuelreyesbravo(at)gmail(dot)com>
Cc: Aleksander Alekseev <aleksander(at)tigerdata(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Masao Fujii <masao(dot)fujii(at)gmail(dot)com>
Subject: Re: pgsql: Revert online data checksum transitions
Date: 2026-09-16 14:08:29
Message-ID: 994b40a1-af72-45d9-bfd1-9f0f4b0e9715@iki.fi
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On 16/09/2026 16:04, Daniel Gustafsson wrote:
>> On 16 Sep 2026, at 14:58, Manuel Reyes Bravo <manuelreyesbravo(at)gmail(dot)com> wrote:
>
>> The server itself is not at risk, since PG_CONTROL_VERSION was bumped
>> and 19.0 refuses a beta3 data directory; it is only tools reading
>> archived beta3 WAL that cannot tell the formats apart. But the revert
>> of 0d3dba38c77 on this branch (01a80f06214) bumped the magic for the
>> same reason, so it looks like this one should too.
>
> Thanks for the report, will include when fixing.

Also, the ControlFile->data_checksum_version_init is now never set.

- Heikki

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