From: Theodore Tso <tytso@mit.edu>
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 07:56:59 -0400 [thread overview]
Message-ID: <20090417115659.GB7117@mit.edu> (raw)
In-Reply-To: <gs9nm5$8m1$1@ger.gmane.org>
On Fri, Apr 17, 2009 at 12:03:33PM +0100, 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.
What happened afterwards? Did fsck complete successfully?
I see from the dumpe2fs that you sent it had only been in use for a
week. How were you using the filesystem? Did you try using the
online resize feature at any time?
The problem is that any number of things could have caused the block
group descriptors to be corrupted.
- Ted
next prev parent reply other threads:[~2009-04-17 11:57 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 [this message]
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
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090417115659.GB7117@mit.edu \
--to=tytso@mit.edu \
--cc=jss@ast.cam.ac.uk \
--cc=linux-ext4@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).