Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1YxK1g-0003FS-Cf for pgsql-hackers@arkaria.postgresql.org; Tue, 26 May 2015 18:56:32 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.80) (envelope-from ) id 1YxK1f-0000CF-OQ for pgsql-hackers@arkaria.postgresql.org; Tue, 26 May 2015 18:56:31 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.2:RSA_AES_256_CBC_SHA256:256) (Exim 4.80) (envelope-from ) id 1YxK1d-0000A4-QO for pgsql-hackers@postgresql.org; Tue, 26 May 2015 18:56:29 +0000 Received: from 01.zmailcloud.com ([192.198.85.104] helo=mx-out-1.zmailcloud.com) by magus.postgresql.org with esmtp (Exim 4.84) (envelope-from ) id 1YxK1Z-0004Ci-US for pgsql-hackers@postgresql.org; Tue, 26 May 2015 18:56:29 +0000 Received: from smtp.01.com (smtp.01.com [10.10.0.43]) by mx-out-1.zmailcloud.com (Postfix) with ESMTP id 17918564038 for ; Tue, 26 May 2015 13:56:25 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by smtp-out-1.01.com (Postfix) with ESMTP id F2B51A03BF for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) X-Virus-Scanned: amavisd-new at smtp-out-1.01.com Received: from smtp.01.com ([127.0.0.1]) by localhost (smtp-out-1.01.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Mbm9xPk1ilMG for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) Received: from smtp.01.com (localhost [127.0.0.1]) by smtp-out-1.01.com (Postfix) with ESMTP id BF5F1A0460 for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) Received: from localhost (localhost [127.0.0.1]) by smtp-out-1.01.com (Postfix) with ESMTP id A5232A045E for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) X-Virus-Scanned: amavisd-new at smtp-out-1.01.com Received: from smtp.01.com ([127.0.0.1]) by localhost (smtp-out-1.01.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id SAzChwL21yRG for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) Received: from [172.47.23.103] (50-0-190-244.dsl.dynamic.fusionbroadband.com [50.0.190.244]) by smtp-out-1.01.com (Postfix) with ESMTPSA id 321DCA03BF for ; Tue, 26 May 2015 13:56:24 -0500 (CDT) Message-ID: <5564C1D6.4080506@agliodbs.com> Date: Tue, 26 May 2015 11:56:22 -0700 From: Josh Berkus Organization: PostgreSQL Experts Inc. User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: pgsql-hackers@postgresql.org Subject: Re: ERROR: MultiXactId xxxx has not been created yet -- apparent wraparound References: <556439CF.7070109@pscs.co.uk> <20150526150159.GV5885@postgresql.org> <55649583.1040206@pscs.co.uk> <20150526184736.GX5885@postgresql.org> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-hackers Precedence: bulk Sender: pgsql-hackers-owner@postgresql.org 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 -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers