From owner-freebsd-current@FreeBSD.ORG Sat Jul 5 15:59:47 2008 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 766821065673 for ; Sat, 5 Jul 2008 15:59:47 +0000 (UTC) (envelope-from gnn@neville-neil.com) Received: from proxy.meer.net (proxy.meer.net [64.13.141.13]) by mx1.freebsd.org (Postfix) with ESMTP id 595E58FC25 for ; Sat, 5 Jul 2008 15:59:47 +0000 (UTC) (envelope-from gnn@neville-neil.com) Received: from mail.meer.net (mail.meer.net [64.13.141.3]) by proxy.meer.net (8.14.2/8.14.2) with ESMTP id m65Fxk6C017667; Sat, 5 Jul 2008 08:59:46 -0700 (PDT) (envelope-from gnn@neville-neil.com) Received: from mail2.meer.net (mail2.meer.net [64.13.141.16]) by mail.meer.net (8.13.3/8.13.3/meer) with ESMTP id m65FxZwC054791; Sat, 5 Jul 2008 08:59:35 -0700 (PDT) (envelope-from gnn@neville-neil.com) Received: from minion.local.neville-neil.com (pool-96-232-19-75.nycmny.east.verizon.net [96.232.19.75] (may be forged)) (authenticated bits=0) by mail2.meer.net (8.14.1/8.14.1) with ESMTP id m65FxY13024808; Sat, 5 Jul 2008 08:59:35 -0700 (PDT) (envelope-from gnn@neville-neil.com) Date: Sat, 05 Jul 2008 11:59:34 -0400 Message-ID: From: gnn@freebsd.org To: Bakul Shah In-Reply-To: <20080704191043.87CFE5B4B@mail.bitblocks.com> References: <20080704191043.87CFE5B4B@mail.bitblocks.com> User-Agent: Wanderlust/2.15.5 (Almost Unreal) SEMI/1.14.6 (Maruoka) FLIM/1.14.9 (=?ISO-8859-4?Q?Goj=F2?=) APEL/10.7 Emacs/22.1.50 (i386-apple-darwin8.11.1) MULE/5.0 (SAKAKI) MIME-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII X-Canit-CHI2: 0.50 X-Bayes-Prob: 0.5 (Score 0, tokens from: ) X-Spam-Score: 0.10 () [Tag at 5.00] COMBINED_FROM X-CanItPRO-Stream: default X-Canit-Stats-ID: 868068 - 1b4be2eb1021 X-Scanned-By: CanIt (www . roaringpenguin . com) on 64.13.141.13 Cc: current@freebsd.org Subject: Re: Has anyone else seen any form of in memory or on disk corruption? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Jul 2008 15:59:47 -0000 At Fri, 04 Jul 2008 12:10:43 -0700, Bakul Shah wrote: > > On Fri, 04 Jul 2008 12:58:07 EDT gnn@freebsd.org wrote: > > I have hundreds of these files to run this over, and a full check > > takes about 3 hours, but I usually see some form of corruption within > > the first 20 minutes. > > ... > > 4) Corruption is seen only after a reboot, if the machines continue to > > run corruption is never seen again, until another reboot. > > This sounds like a hardware problem.... May be heat related or due > to a marginal power supply? Try using a beefier supply on one of > the systems or removing something to reduce load. Or increase the > load by making disks do lots of seeking while you are running unzip > and running other things at the same time. To isolate heat related > problems we used to blow cold air (or hot air) on suspected > components and see if the problem goes away or gets worse. These machines are in a brand new data center with more than adequate cooling and have very beefy power. Best, George