From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: with ECARTIS (v1.0.0; list xfs); Mon, 31 Jul 2006 15:29:22 -0700 (PDT) Received: from larry.melbourne.sgi.com (larry.melbourne.sgi.com [134.14.52.130]) by oss.sgi.com (8.12.10/8.12.10/SuSE Linux 0.7) with SMTP id k6VMSbDW000514 for ; Mon, 31 Jul 2006 15:28:48 -0700 Date: Tue, 1 Aug 2006 08:27:47 +1000 From: Nathan Scott Subject: Re: Where are superblocks stored? Message-ID: <20060801082747.B2286470@wobbly.melbourne.sgi.com> References: <51A9A4FCBC06324F8BFE956A551B58E0056A4CA3@mail01dn.adic.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <51A9A4FCBC06324F8BFE956A551B58E0056A4CA3@mail01dn.adic.com>; from rishi.malik@adic.com on Mon, Jul 31, 2006 at 09:23:27AM -0600 Sender: xfs-bounce@oss.sgi.com Errors-To: xfs-bounce@oss.sgi.com List-Id: xfs To: Rishi Malik Cc: xfs@oss.sgi.com On Mon, Jul 31, 2006 at 09:23:27AM -0600, Rishi Malik wrote: > Hi All, > > I'm investigating some compact flash failures we've had. We run XFS on > the CF. I've been getting a lot of I/O errors around logical block > 543080. These are 512MB compact flash cards, and I think that block puts > it at about halfway through the CF. I know the I/O errors indicate an That would be the journal. > error at a lower level then XFS. What I'm wondering, is if there's a > superblock stored there? Maybe we're hammering that area a lot, and > because of other problems with the card, we're getting these errors. > > I know that XFS stores its primary superblock at 0, but I haven't found > out where the secondary superblocks are stored. Any help is appreciated. The secondary superblocks are very rarely touched (repair, and growfs only IIRC), they will be unrelated to your problem here. cheers. -- Nathan