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From: Josh Berkus <josh@agliodbs.com>
To: pgsql-hackers@postgresql.org
Subject: Re: ERROR:  MultiXactId xxxx has not been created yet -- apparent wraparound
Date: Tue, 26 May 2015 11:56:22 -0700
Message-ID: <5564C1D6.4080506@agliodbs.com> (raw)
In-Reply-To: <WM!361c2f5dc06ff25484189cb579404e80e8ff1ac4043e1fd446bc8842b0c88e4e6499f84c14bf2f82ccc4406d5e453588!@asav-1.01.com>
References: <556439CF.7070109@pscs.co.uk>
	<20150526150159.GV5885@postgresql.org>
	<55649583.1040206@pscs.co.uk>
	<20150526184736.GX5885@postgresql.org>
	<WM!361c2f5dc06ff25484189cb579404e80e8ff1ac4043e1fd446bc8842b0c88e4e6499f84c14bf2f82ccc4406d5e453588!@asav-1.01.com>
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On 05/26/2015 11:47 AM, Alvaro Herrera wrote:
> Paul Smith wrote:
> 
>> No, nothing like that. It was just running fine, and then suddenly (at 2am
>> on 23 May) it started throwing up loads of these errors. The DB server
>> wasn't even restarted at that point. It was just working fine, then suddenly
>> wasn't. (The first error was at 02:00:32 BST, then every few minutes after
>> that there's another one).
> 
> Another crazy thought is that the host system messed up and overwrote
> part of the table with pages from some other guest system.  I have never
> seen a report of such a thing happening.

I have.  Linux kernel version of the host?

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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