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Date:	Tue, 26 Apr 2011 08:23:38 -0400
From:	Ted Ts'o <>
Subject: Re: 2.6.32 ext3 assertion j_running_transaction != NULL fails in

On Tue, Apr 26, 2011 at 04:07:11AM -0500, wrote:
> Ted!
> Thank you a lot!
> We observed this bug on ~10 out of 40 machines after an uptime from about 3 weeks. All run under comparable conditions.
> I will have a closer look on the debugfs output to verify if the situation can  happen within this short time range. Additionally we installed a crash kernel and I changed the BUG into a panic(). 
> So I will be able to look at the journal structure if this happens again.

If you would be willing to install the debugging code that is in the
jbd2 patch into the jbd patch, and this put this on your production
machines, that would be really great.  I can send you a revised jbd
patch if that would help (the debugging in code in jbd2 should move
over to the jbd patch really simply).

							- Ted
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