MIME-Version: 1.0
References: <f59335a4-83ff-438a-a30e-7cf2200276b6@postgrespro.ru>
 <edff64df-da98-4d1d-a65a-6f5a8edf7d92@postgrespro.ru>
In-Reply-To: <edff64df-da98-4d1d-a65a-6f5a8edf7d92@postgrespro.ru>
From: Alexander Korotkov <aekorotkov@gmail.com>
Date: Tue, 21 Apr 2026 15:12:58 +0300
Message-ID: 
 <CAPpHfdsXkEWUeLUG4zh9q=hjpsOCMgsbN_XZh-6JL0z1NaNMqQ@mail.gmail.com>
Subject: Re: Incorrect checksum in control file with pg_rewind test
To: "Maksim.Melnikov" <m.melnikov@postgrespro.ru>
Cc: pgsql-hackers@lists.postgresql.org
Content-Type: multipart/mixed; boundary="000000000000c3a41a064ff75677"
Archived-At: 
 <https://www.postgresql.org/message-id/CAPpHfdsXkEWUeLUG4zh9q%3DhjpsOCMgsbN_XZh-6JL0z1NaNMqQ%40mail.gmail.com>
Precedence: bulk

--000000000000c3a41a064ff75677
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable

Hi, Maksim!

On Fri, Nov 7, 2025 at 5:19=E2=80=AFPM Maksim.Melnikov
<m.melnikov@postgrespro.ru> wrote:
> just to clarify, it isn't pg_rewind related issue and can fire
> spontaneously.
> I don't have any strong scenario how to reproduce it, tests sometimes
> fired on our local CI, but as you can see on thread [1],
> where the same issue for frontends was discussed, it is very hard to
> reproduce and there wasn't scenario how to do it too.
>
> Some dirty hacks to reproduce it was described here [2], and I've tried
> it on master branch:
> First of all I applied patch
> 0001-XXX-Dirty-hack-to-clobber-control-file-for-testing.patch from [2],
> then compile app with
> -DEXEC_BACKEND and exec command in psql
> do $$ begin loop perform pg_update_control_file(); end loop; end; $$;
> Also I've run pgbench command
> for run in {1..5000}; do pgbench -c50 -t100 -j6 -S postgres ; done
> And eventually got error
>
> 2025-11-07 17:58:33.139 MSK [2472504] FATAL:  incorrect checksum in
> control file
> 2025-11-07 17:58:33.141 MSK [2472501] LOG:  could not receive data from
> client: Connection reset by peer
> 2025-11-07 17:58:33.143 MSK [2472505] LOG:  could not send data to
> client: Broken pipe
> 2025-11-07 17:58:33.143 MSK [2472505] FATAL:  connection to client lost

Thank you for spotting this issue and proposing a patch.  The fork
builds don't have this problem, because fork replicated contents of
LocalControlFile to the new process.  And the postmaster has
consistent snapshot of control file as there is no concurrent process
which could write it and that moment.  But EXEC_BACKEND, even with
your patch, may end up different processes with different contents of
LocalControlFile.  I don't see it could cause a material bug right
now, but I see this as undesirable divergence between fork and
EXEC_BACKEND behaviors.  I propose an alternative approach copy the
contents of control file to the new process via BackendParameters.
This approach solves two problems at once: no torn reads, and no
divergence between fork and EXEC_BACKEND.

------
Regards,
Alexander Korotkov
Supabase

--000000000000c3a41a064ff75677
Content-Type: application/octet-stream;
	name="v1-0001-Inherit-pg_control-snapshot-into-EXEC_BACKEND-sub.patch"
Content-Disposition: attachment;
	filename="v1-0001-Inherit-pg_control-snapshot-into-EXEC_BACKEND-sub.patch"
Content-Transfer-Encoding: base64
Content-ID: <f_mo8kpf5m0>
X-Attachment-Id: f_mo8kpf5m0
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--000000000000c3a41a064ff75677--