From: | Michael Banck <michael(dot)banck(at)credativ(dot)de> |
---|---|
To: | Magnus Hagander <magnus(at)hagander(dot)net>, Sergei Kornilov <sk(at)zsrv(dot)org> |
Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Fabien COELHO <coelho(at)cri(dot)ensmp(dot)fr>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
Subject: | Re: Offline enabling/disabling of data checksums |
Date: | 2019-03-13 15:46:19 |
Message-ID: | 1552491979.4947.71.camel@credativ.de |
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Lists: | pgsql-hackers |
Hi,
Am Mittwoch, den 13.03.2019, 12:24 +0100 schrieb Magnus Hagander:
> On Wed, Mar 13, 2019 at 11:54 AM Sergei Kornilov <sk(at)zsrv(dot)org> wrote:
> > One new question from me: how about replication?
> > Case: primary+replica, we shut down primary and enable checksum, and
> > "started streaming WAL from primary" without any issue. I have
> > master with checksums, but replica without.
> > Or cluster with checksums, then disable checksums on primary, but
> > standby think we have checksums.
>
> Enabling or disabling the checksums offline on the master quite
> clearly requires a rebuild of the standby, there is no other way
What about shutting down both and running pg_checksums --enable on the
standby as well?
Michael
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