From owner-freebsd-questions@FreeBSD.ORG Tue May 18 14:56:26 2010 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1796B106566B for ; Tue, 18 May 2010 14:56:25 +0000 (UTC) (envelope-from m.seaman@infracaninophile.co.uk) Received: from smtp.infracaninophile.co.uk (gate6.infracaninophile.co.uk [IPv6:2001:8b0:151:1::1]) by mx1.freebsd.org (Postfix) with ESMTP id 978AF8FC12 for ; Tue, 18 May 2010 14:56:23 +0000 (UTC) Received: from seedling.black-earth.co.uk (seedling.black-earth.co.uk [81.187.76.163]) (authenticated bits=0) by smtp.infracaninophile.co.uk (8.14.4/8.14.4) with ESMTP id o4IEu0Rj057378 (version=TLSv1/SSLv3 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Tue, 18 May 2010 15:56:07 +0100 (BST) (envelope-from m.seaman@infracaninophile.co.uk) Message-ID: <4BF2AA7F.9090503@infracaninophile.co.uk> Date: Tue, 18 May 2010 15:55:59 +0100 From: Matthew Seaman Organization: Infracaninophile User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.1.9) Gecko/20100317 Thunderbird/3.0.4 MIME-Version: 1.0 To: Doug Poland References: In-Reply-To: X-Enigmail-Version: 1.0.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: clamav-milter 0.96 at lucid-nonsense.infracaninophile.co.uk X-Virus-Status: Clean X-Spam-Status: No, score=2.0 required=5.0 tests=DKIM_ADSP_ALL,SPF_FAIL autolearn=no version=3.3.1 X-Spam-Level: ** X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on lucid-nonsense.infracaninophile.co.uk Cc: questions@freebsd.org Subject: Re: Interpretting 3Ware error messages 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: Tue, 18 May 2010 14:56:26 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 18/05/2010 15:43:25, Doug Poland wrote: > Hello, > > I have a 7.2-R i386 system running a 3ware 9500S-4LP SATA 150 > controller with 4 SATA drives. I recently starting seeing the > following in my logs.... > > smartd[906]: Device: /dev/twa0 [3ware_disk_00], 1 Currently unreadable > (pending) sectors > smartd[906]: Device: /dev/twa0 [3ware_disk_00], 1 Offline > uncorrectable sectors > > Using the twi_cli program, I can examine the disk subsystem, but I do > not see any issues with an underlying drive. > > Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) > ------------------------------------------------------------------------ > u0 RAID-10 OK - - - 64K 298.002 > u0-0 RAID-1 OK - - - - - > u0-0-0 DISK OK - - p2 - 149.001 > u0-0-1 DISK OK - - p3 - 149.001 > u0-1 RAID-1 OK - - - - - > u0-1-0 DISK OK - - p0 - 149.001 > u0-1-1 DISK OK - - p1 - 149.001 > > > I suspect a disk problem, but cannot identify the individual disk or > the nature of the problem. Can anyone shed some light on this? > > Look at the SMART data for the disk(s) -- my guess is that you're seeing sectors failing and being re-mapped by the drive firmware. If this is happening to any significant extent the disk may well be reaching the end of its usable life: happily you would seem to have been alerted to that in time to do something about it without needing to run around in a blind panic. There's a background task you can set up on 3ware controllers that will attempt to access all sectors of a disk specifically to bring to light problems like this, which otherwise could go unnoticed for a long time and lead to silent data corruption. Cheers, Matthew - -- Dr Matthew J Seaman MA, D.Phil. 7 Priory Courtyard Flat 3 PGP: http://www.infracaninophile.co.uk/pgpkey Ramsgate Kent, CT11 9PW -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.14 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkvyqn8ACgkQ8Mjk52CukIyDJgCeI/olC6Qh4wA7nBfrUvfYy1fN a1gAn2f8oXQ4YaJc4WcXt6EmEYIoM+ia =qLER -----END PGP SIGNATURE-----