From: Eric Sandeen <sandeen@redhat.com>
To: Jeremy Sanders <jss@ast.cam.ac.uk>
Cc: linux-ext4@vger.kernel.org
Subject: Re: fsck.ext4: Group descriptors look bad... trying backup blocks...
Date: Fri, 17 Apr 2009 12:00:29 -0500 [thread overview]
Message-ID: <49E8B5AD.6030907@redhat.com> (raw)
In-Reply-To: <gs9nm5$8m1$1@ger.gmane.org>
Jeremy Sanders wrote:
> Hi - I'm trying out ext4 on a large 8.2 TB software raid device (md). On
> rebooting (cleanly unmounting), I tried an fsck on the device. I get the
> following:
>
> [root@xback2 ~]# fsck /dev/md0
> fsck 1.41.4 (27-Jan-2009)
> e2fsck 1.41.4 (27-Jan-2009)
> fsck.ext4: Group descriptors look bad... trying backup blocks...
> Group descriptor 0 checksum is invalid. Fix<y>?
>
> It then finds lots of bad group descriptors.
>
> This is Fedora 10, 2.6.27.21-170.2.56.fc10.x86_64 and
> e2fsprogs-1.41.4-4.fc10.x86_64.
>
Jeremy, if you're willing, could you upgrade to the 2.6.29 kernel that's
in F10 updates-testing? That way the ext4 code is a bit more of a
recent, common codebase. Also, if this is a test fs, re-mkfs'ing from
scratch might not be a bad way to go.
Depending on how hard it is to reproduce, it may also be interesting to
try a filesystem just shy of 8TB (2^31) blocks in case there is some
32-bit wrap-around there, since you're at 8.2T....
-Eric
next prev parent reply other threads:[~2009-04-17 17:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-17 11:03 fsck.ext4: Group descriptors look bad... trying backup blocks Jeremy Sanders
2009-04-17 11:26 ` Jeremy Sanders
2009-04-17 11:56 ` Theodore Tso
2009-04-17 12:16 ` Jeremy Sanders
2009-04-17 17:10 ` Eric Sandeen
2009-04-17 18:51 ` Jeremy Sanders
2009-04-17 12:24 ` Jeremy Sanders
2009-04-17 16:36 ` Theodore Tso
2009-04-17 17:00 ` Eric Sandeen [this message]
2009-04-20 9:33 ` Jeremy Sanders
2009-04-20 11:35 ` Theodore Tso
2009-04-20 11:43 ` Jeremy Sanders
2009-04-20 12:48 ` Theodore Tso
2009-04-20 12:54 ` Jeremy Sanders
2009-04-20 14:49 ` Eric Sandeen
2009-04-20 15:51 ` Eric Sandeen
2009-04-20 15:53 ` Jeremy Sanders
2009-04-20 16:26 ` Eric Sandeen
2009-04-20 16:40 ` Jeremy Sanders
2009-04-20 18:28 ` Andreas Dilger
2009-04-20 18:55 ` Jeremy Sanders
2009-04-20 20:45 ` Andreas Dilger
2009-04-22 9:34 ` Jeremy Sanders
2009-04-22 9:07 ` Jeremy Sanders
2009-04-22 9:59 ` Thierry Vignaud
2009-04-24 8:27 ` Jeremy Sanders
2009-04-21 15:14 ` Thierry Vignaud
2009-04-21 15:52 ` Eric Sandeen
[not found] ` <m23ac255pp.fsf@vador.mandriva.com>
2009-04-21 16:40 ` Eric Sandeen
2009-04-21 16:56 ` Thierry Vignaud
2009-04-21 16:43 ` Theodore Tso
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