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From: Theodore Ts'o <tytso@mit.edu>
To: Stephen Elliott <techweb@ntlworld.com>
Cc: 'Andreas Dilger' <adilger@dilger.ca>, linux-ext4@vger.kernel.org
Subject: Re: 2nd Attempt - FSCK Errors
Date: Fri, 3 May 2013 09:14:21 -0400	[thread overview]
Message-ID: <20130503131421.GC32297@thunk.org> (raw)
In-Reply-To: <000f01ce47ec$ca7767c0$5f663740$@ntlworld.com>

What you've shown us makes me suspicious about whether the hardware
device is sane or not.  In the previous e2fsck run, it set i_size to a
non-zero value.  Yet when debugfs tries to read the same inode, it's
now seeing all zero's.

So that implies the disk (or software raid device; you haven't been
clear what the underlying storage is for this file system) is not
returning the same information for a particular block as was
previously written.

If the underlying block device is not stable, there really is nothing
for e2fsck to do.  You might want to check /var/log/messages for any
error messages relating to the underlying storage device(s).  If
you're seeing I/O errors in the log files, that would be another hint.

At this point, my recommendation to you is to find a separate disk (or
RAID array if necessary) which is as big as the underlying disk, and
do an image copy (via dd or ddrescue) to a known-good storage device,
and then retry the e2fsck on this copy of the file system.

Regards,

						- Ted


  reply	other threads:[~2013-05-03 13:14 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-04-30 14:00 2nd Attempt - FSCK Errors Stephen Elliott
2013-04-30 16:14 ` Andreas Dilger
2013-04-30 16:25   ` Stephen Elliott
2013-04-30 17:58   ` Stephen Elliott
2013-05-03 10:55   ` Stephen Elliott
2013-05-03 13:14     ` Theodore Ts'o [this message]
2013-05-03 13:31       ` Stephen Elliott
2013-05-03 15:29         ` Theodore Ts'o
2013-05-03 18:42           ` Stephen Elliott
2013-05-03 21:31             ` Theodore Ts'o
2013-05-05 11:19               ` Stephen Elliott
2013-05-08 14:45               ` Stephen Elliott

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