From owner-freebsd-questions@FreeBSD.ORG Wed Apr 18 19:51:20 2007 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 233CB16A400 for ; Wed, 18 Apr 2007 19:51:20 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from mail-out4.apple.com (mail-out4.apple.com [17.254.13.23]) by mx1.freebsd.org (Postfix) with ESMTP id E63B413C4C3 for ; Wed, 18 Apr 2007 19:51:19 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from relay5.apple.com (relay5.apple.com [17.128.113.35]) by mail-out4.apple.com (8.13.8/8.13.8) with ESMTP id l3IJpJTX009803; Wed, 18 Apr 2007 12:51:19 -0700 (PDT) Received: from relay5.apple.com (unknown [127.0.0.1]) by relay5.apple.com (Symantec Mail Security) with ESMTP id 999E629C006; Wed, 18 Apr 2007 12:51:19 -0700 (PDT) X-AuditID: 11807123-9ebe7bb000000b42-00-462676b72b90 Received: from [17.214.13.96] (cswiger1.apple.com [17.214.13.96]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (No client certificate requested) by relay5.apple.com (Apple SCV relay) with ESMTP id 8096630400D; Wed, 18 Apr 2007 12:51:19 -0700 (PDT) In-Reply-To: <20070418193749.GB52435@polands.org> References: <52060.69.129.174.18.1176828969.squirrel@email.polands.org> <20070417130653.a07b6c1c.wmoran@potentialtech.com> <20070418193749.GB52435@polands.org> Mime-Version: 1.0 (Apple Message framework v752.2) Content-Type: text/plain; charset=US-ASCII; delsp=yes; format=flowed Message-Id: <38DCF62F-9F0E-4DBB-9348-C782E5D182E0@mac.com> Content-Transfer-Encoding: 7bit From: Chuck Swiger Date: Wed, 18 Apr 2007 12:51:18 -0700 To: Doug Poland X-Mailer: Apple Mail (2.752.2) X-Brightmail-Tracker: AAAAAA== Cc: questions@freebsd.org, Bill Moran Subject: Re: Exercising ATA disks in hopes of revealing errors X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Apr 2007 19:51:20 -0000 On Apr 18, 2007, at 12:37 PM, Doug Poland wrote: > I just used the "Drive Fitness Test" for IBM ATA drives on a > particular > disk and it finished without detecting errors. However, I see > messages > like this: > > Apr 16 22:51:44 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC > error (retrying request) LBA=1904935 > Apr 16 22:52:02 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC > error (retrying request) LBA=8029031 > Apr 16 23:35:30 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC > error (retrying request) LBA=2269287 > Apr 16 23:37:22 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC > error (retrying request) LBA=3612007 > Apr 16 23:48:17 seth kernel: ad3: WARNING - WRITE_DMA UDMA ICRC > error (retrying request) LBA=1932123 > Apr 17 21:12:25 seth kernel: ad3: FAILURE - SMART > status=51 error=4 LBA=12734209 > Apr 17 21:12:25 seth kernel: ad3: FAILURE - SMART > status=51 error=4 LBA=12734214 > > in /var/log/messages. > > Do the kernel messages indicate a potential problem with this drive? They seem to suggest more of a cabling problem or communications problem between the drive and motherboard than a problem within the drive itself. It could also indicate a problem with the ATA driver against your particular motherboard/chipset-- but without a dmesg or some hardware details, we can't do better than guess. > Whom should I believe, FreeBSD or the disk diagnostics tool? Both. -- -Chuck