linux-ext4 - [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

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Message-Id: <200910230430.n9N4UiQA028497@demeter.kernel.org>
Date:	Fri, 23 Oct 2009 04:30:44 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 14354] Bad corruption with 2.6.32-rc1 and upwards

http://bugzilla.kernel.org/show_bug.cgi?id=14354

--- Comment #108 from James Cloos <cloos@...loos.com>  2009-10-23 04:30:36 ---
> I'd appreciate by the way getting reports from other people who have been
> suffering file system corruption problems whether or not the patch in
> attachment #23468 helps, and whether they are seeing any "File system is
> read-only" followed by a kernel stack trace in their system logs.  Thanks!!

I got some corruption, but not ro changes.

In an early rc nothing seemed wrong until, after a reboot, I saw enough
corruption in a db that I had to dump, clean up several bogus records
and restore it.  (It was a busy but ephemeral db, so that wasn't too
much of a problem.

Today, however, running -rc5 the box simply rebooted without notice.
and I got a number of log entries after the reboot.  Most specified
ext4_mb_generate_buddy and jbd complained that it spotted a dirty
metadata buffer.  There were also a couple of bad header/extents.

I stut down enough to unmoount /var and ran e2fsck.  That generated a
*slew* of errors, mostly complaining about multiple files claiming
the same blocks.  A second e2fsck right after (with -f) showed no
further errors.  I now have about 70 megs of data in lost+found.

The box is only partly up right now (I'm writing this over ssh);
I'll be able to provide more details after a reboot....

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