Re: clog segment truncation

From: "Matheus Alcantara" <matheusssilv97(at)gmail(dot)com>
To: "Smolkin Grigory" <smallkeen(at)gmail(dot)com>, <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Subject: Re: clog segment truncation
Date: 2025-11-10 13:43:47
Message-ID: DE525BYLM6ZC.1BA8B3U2H9H1Z@gmail.com
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On Mon Nov 10, 2025 at 9:29 AM -03, Smolkin Grigory wrote:
> So is it possible that either all_frozen bit was set incorrectly or wansn't
> unset when tuples were created?
> I will be happy to provide any additional information if required.
> PostgreSQL version: 15.6, data_checksums: on
>
Actually the 15.6 is quite old. I would also recommend to upgrade to the
latest 15 release which is 15.14.

I didn't find any specific release note about clog truncation but you
are missing some important fixes though.

There is this fix [1] on 15.8 but I'm not sure if it's fully related
with your issue faced here.

[1] https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=c809a2b2d

--
Matheus Alcantara
EDB: http://www.enterprisedb.com

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