From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Chinner Subject: Re: assemble vs create an array....... Date: Fri, 7 Dec 2007 08:22:25 +1100 Message-ID: <20071206212225.GN115527101@sgi.com> References: <474F869D.5040503@mpigani.org> <18255.41044.614676.410107@notabene.brown> <47501D7E.7000804@dgreaves.com> <475552D2.4000802@mpigani.org> <47568DE1.1050108@dgreaves.com> <4758129D.40600@mpigani.org> <475825C0.4070605@msgid.tls.msk.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <475825C0.4070605@msgid.tls.msk.ru> Sender: linux-raid-owner@vger.kernel.org To: Michael Tokarev Cc: Dragos , David Greaves , linux-raid@vger.kernel.org, xfs@oss.sgi.com List-Id: linux-raid.ids On Thu, Dec 06, 2007 at 07:39:28PM +0300, Michael Tokarev wrote: > What to do is to give repairfs a try for each permutation, > but again without letting it to actually fix anything. > Just run it in read-only mode and see which combination > of drives gives less errors, or no fatal errors (there > may be several similar combinations, with the same order > of drives but with different drive "missing"). Ugggh. > It's sad that xfs refuses mount when "structure needs > cleaning" - the best way here is to actually mount it > and see how it looks like, instead of trying repair > tools. It self protection - if you try to write to a corrupted filesystem, you'll only make the corruption worse. Mounting involves log recovery, which writes to the filesystem.... > Is there some option to force-mount it still > (in readonly mode, knowing it may OOPs kernel etc)? Sure you can: mount -o ro,norecovery But it you hit corruption it will still shut down on you. If the machine oopses then that is a bug. > thread prompted me to think. If I can't force-mount it > (or browse it using other ways) as I can almost always > do with (somewhat?) broken ext[23] just to examine things, > maybe I'm trying it before it's mature enough? ;) Hehe ;) For maximum uber-XFS-guru points, learn to browse your filesystem with xfs_db. :P Cheers, Dave. -- Dave Chinner Principal Engineer SGI Australian Software Group