Received: from makus.postgresql.org (makus.postgresql.org [98.129.198.125]) by mail.postgresql.org (Postfix) with ESMTP id DC32C11F7E64 for ; Wed, 20 Jun 2012 01:08:29 -0300 (ADT) Received: from mail-pz0-f46.google.com ([209.85.210.46]) by makus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1ShCDU-0000is-GQ for pgsql-sql@postgresql.org; Wed, 20 Jun 2012 04:08:29 +0000 Received: by dady13 with SMTP id y13so9275798dad.19 for ; Tue, 19 Jun 2012 21:08:14 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding :x-gm-message-state; bh=AF3RJRfz4KbunyUzyKAN7ZxGZwbavfX5rNzWrCrMRos=; b=XuDtv9uusceYbwJJpL27RvjF4HPy/4UwgEqKMDj9X4BdOqQeqqPk3P5Su/Jmcj4JN6 XNZnCXZau0qCNZBcNXj7CrbmB4yf4f6FjoQpHSf2JK4bDsy0JM9uUXN5I2mIHOEWp7zA hAacmbOxzHTwVTVqB4U23cfMe2kC02LhW00pWYXOJy5y9ZmLB3lq+JQzulNOMvx8KCBu oq0Wnlw23CiSlMbTZKG+0VMJ0eGGGdTa6iVR8K23xQC7CuLDVv8O5lRZliwuMNVZur7T O2nCMU1p4IdPewxeCGHx77MnmUFlahPnfvTmfdoozTg689+Hahg7agMsNfchTBAeEK2J MDrg== Received: by 10.68.222.9 with SMTP id qi9mr71441632pbc.164.1340165294632; Tue, 19 Jun 2012 21:08:14 -0700 (PDT) Received: from ayaki.localdomain (office1.postnewspapers.com.au. [150.101.171.128]) by mx.google.com with ESMTPS id gj8sm30334199pbc.39.2012.06.19.21.08.12 (version=SSLv3 cipher=OTHER); Tue, 19 Jun 2012 21:08:13 -0700 (PDT) Message-ID: <4FE14CA9.8090000@ringerc.id.au> Date: Wed, 20 Jun 2012 12:08:09 +0800 From: Craig Ringer User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:13.0) Gecko/20120605 Thunderbird/13.0 MIME-Version: 1.0 To: Achilleas Mantzios CC: pgsql-sql@postgresql.org Subject: Re: Insane behaviour in 8.3.3 References: <201206141139.35601.achill@matrix.gatewaynet.com> <201206181136.14782.achill@matrix.gatewaynet.com> <201206191217.49743.achill@matrix.gatewaynet.com> In-Reply-To: <201206191217.49743.achill@matrix.gatewaynet.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gm-Message-State: ALoCoQktmJZAWz5Iwi9p1IpowtYr5Fp3RAqYnmk2GobC+al0fgyVcWW2Fy2xCvkHQax0t7poZ/UJ X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201206/56 X-Sequence-Number: 36710 On 06/19/2012 05:17 PM, Achilleas Mantzios wrote: > We had another corruption incident on the very same machine, this time in the jboss subsystem (a "jar cvf" produced corrupted .jar). > IMHO this means faulty RAM/disk. > If that is true, then i guess HW sanity checks are even more important than SW upgrades. ... and a lot more difficult :S Log monitoring is often the most imporant part - monitoring for NMIs and other hardware notifications, checking the kernel log for odd issues or reports of unexpected segfaults from userspace programs, etc. -- Craig Ringer