linux-ext4 - [Bug 12885] kernel BUG at fs/jbd/transaction.c:1376!

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Message-Id: <20090318181414.57C3910800E@picon.linux-foundation.org>
Date:	Wed, 18 Mar 2009 11:14:14 -0700 (PDT)
From:	bugme-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 12885] kernel BUG at fs/jbd/transaction.c:1376!

http://bugzilla.kernel.org/show_bug.cgi?id=12885





------- Comment #11 from andy-kernelbugzilla@...ashground.de  2009-03-18 11:14 -------
(In reply to comment #8)
> One interesting thing you could try, if you can go to 2.6.29-rc8, is you could
> try mounting your ext3 filesystem using ext4, and see if the problem goes away
> or not.   If the problem sticks around, then that's actually very interesting,
> since so much has changed between ext3 and ext4.  If it goes away, that could
> be a solution for you, but it also could be that it's just harder to reproduce
> on ext4.

Might we not loose the bug that way, as in it'd be gone for ever?
Can I do that read-only?

> This smells like a bug in jbd layer, or perhaps some assumption which is
> getting violated by LUKS; since if it was as simple as just doing a backup of a
> tree while another process was copying data into it, ext3 is such a commonly
> used file system that I would have thought such a problem would have been
> discovered by now.  So if we have something like this which can be easily
> reproduced, I really want to try to get it chased down.

It's as easy as *reading* the afaics. I'll test this some more.


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