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From: Michael Banck <[email protected]>
To: Jeremy Schneider <[email protected]>
Cc: Ron Johnson <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: verify checksums online
Date: Wed, 23 Apr 2025 17:27:25 +0200
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<CANzqJaDJtXkDEsq3QFY6ywL2KwObAW-twWtZ0qJCsioH-75wWQ@mail.gmail.com>
	<[email protected]>

Hi,

On Fri, Apr 18, 2025 at 03:18:26PM -0700, Jeremy Schneider wrote:
> On Fri, 18 Apr 2025 17:32:19 -0400
> Ron Johnson <[email protected]> wrote:
> 
> > On Fri, Apr 18, 2025 at 5:18 PM Jeremy Schneider
> > <[email protected]> wrote:
> > 
> > > i think there had been some mailing list discussions years ago? the
> > > pg_checksum utility in core still can't do an online check right?
> > 
> > https://www.postgresql.org/docs/17/app-pgchecksums.html
> > 
> > "The server must be shut down cleanly before running pg_checksums."
> 
> Yes I read the docs. This utility has evolved over time including a
> complete rename, and I was just doublechecking here that we didn't miss
> a doc update in case this sentence applied to enable/disable but not to
> verify. As I said I'm assuming it's all accurate but just doing the
> paranoid double-check

I proposed a patch some years ago but it was rejected or at least not
accepted without major changes[1]. There is an external version of
pg_checksums which can do online checksums verification here (using the
above patch): https://github.com/credativ/pg_checksums


Michael

[1] https://commitfest.postgresql.org/patch/1733/

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