From: Andreas Dilger <adilger@sun.com>
To: Kelly Kane <kelly@hq.newdream.net>
Cc: linux-ext4@vger.kernel.org
Subject: Re: Call traces on console from a test machine
Date: Fri, 14 Nov 2008 03:36:02 -0700 [thread overview]
Message-ID: <20081114103602.GU16005@webber.adilger.int> (raw)
In-Reply-To: <491CDF90.8070802@hq.newdream.net>
On Nov 13, 2008 18:16 -0800, Kelly Kane wrote:
> In the mean time, fsck.ext4 is not liking our filesystem.
>
> Group descriptor 353 checksum is invalid. Fix? yes
> Pass 2: CheckingEntry 'spice-and-wolf-si-tendra-segunda-temporada' in
>
> /liamsito1234/cibercomics.com/wp-content/cache/supercache/www.cibercomics.com/2008/10/05
> (2152305) references inode
> 2901322 in group 354 where _INODE_UNINIT is set.
> Entry 'spice-and-wolf-si-tendra-segunda-temporada' in
>
> /liamsito1234/cibercomics.com/wp-content/cache/supercache/www.cibercomics.com/2008/10/05
> (2152305) has
> deleted/unused inode 2901322. Clear? yes
> /dev/sdb1: e2fsck canceled.
> e2fsck: aborted
>
> Same block group each run through, different inode.
>
> I ran e2image and produced the following file:
>
> http://ext4dev.dreamhosters.com/watanabe-home-2008-11-13-1712.e2image.bz2
>
> Unfortunately I cannot mount the filesystem right now due to:
>
> EXT4-fs: ext4_check_descriptors: Checksum for group 353 failed
> (23397!=52411)
> EXT4-fs: group descriptors corrupted!
> mount: wrong fs type, bad option, bad superblock on /dev/sdb1,
> missing codepage or other error In some cases useful info
> is found in syslog - try
> dmesg | tail or so
>
> Is there any hope for recovery of any of this data?
You can run "tune2fs -O ^uninit_bg /dev/XXX" to disable the group
descriptor checksums (and, unfortunately, the fast fsck benefits),
but at least it will allow you to mount the filesystem.
Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.
next prev parent reply other threads:[~2008-11-14 10:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-14 0:31 Call traces on console from a test machine Kelly Kane
2008-11-14 2:16 ` Kelly Kane
2008-11-14 10:36 ` Andreas Dilger [this message]
2008-11-14 17:09 ` Theodore Tso
2008-11-14 20:29 ` Kelly Kane
2008-11-17 18:58 ` Kelly Kane
2008-11-17 20:30 ` Theodore Tso
2008-11-17 21:20 ` Eric Sandeen
2008-11-18 2:24 ` Theodore Tso
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