From: Andres Freund <andres@anarazel.de>
To: Mike Broers <mbroers@gmail.com>
Cc: pgsql-admin@postgresql.org
Subject: Re: root cause of corruption in hot standby
Date: Wed, 10 Oct 2018 12:25:53 -0700
Message-ID: <20181010192553.yithduf3yrxasilz@alap3.anarazel.de> (raw)
In-Reply-To: <CAB9893iR3-xCEoLTLrxuEmeeTbid7Omq0ZJHG=+MB9JBKb_esA@mail.gmail.com>
References: <CAB9893iR3-xCEoLTLrxuEmeeTbid7Omq0ZJHG=+MB9JBKb_esA@mail.gmail.com>
Hi,
On 2018-09-06 12:28:18 -0500, Mike Broers wrote:
> So I have discovered corruption in a postgres 9.5.12 read replica, yay
> checksums!
>
> 2018-09-06 12:00:53 CDT [1563]: [4-1] user=postgres,db=production WARNING:
> page verification failed, calculated checksum 3482 but expected 32232
>
> 2018-09-06 12:00:53 CDT [1563]: [5-1] user=postgres,db=production ERROR:
> invalid page in block 15962 of relation base/16384/464832386
Have you compared whether that block looks significantly different on
the primary from the standby with a hex editor?
Greetings,
Andres Freund
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To: pgsql-admin@postgresql.org
Cc: andres@anarazel.de, mbroers@gmail.com
Subject: Re: root cause of corruption in hot standby
In-Reply-To: <20181010192553.yithduf3yrxasilz@alap3.anarazel.de>
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