linux-ext4 - [Bug 12815] JBD: barrier-based sync failed on dm-1:8

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Message-Id: <20090309154514.B472110803F@picon.linux-foundation.org>
Date:	Mon,  9 Mar 2009 08:45:14 -0700 (PDT)
From:	bugme-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 12815] JBD: barrier-based sync failed on dm-1:8 - disabling barriers  -- and then hang

http://bugzilla.kernel.org/show_bug.cgi?id=12815





------- Comment #7 from sandeen@...hat.com  2009-03-09 08:45 -------
please attach the entire output of the sysrq-w command, so that we can sort out
what's relevant.  Attaching it rather than pasting it in will have the added
advantage of not wrapping the output :)

Your trace snippets don't show any ext4 code in those callchains.  But they may
be waiting on some stuck ext4 process which you didn't include.

(the summary probably should be changed, as this has nothing to do w/
barriers...)

Thanks,
-Eric


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