linux-ext4 - [Bug 56821] an ext4 commit ee0906f causes weird disk hangs

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Message-Id: <20130420175925.DECF311FA4F@bugzilla.kernel.org>
Date:	Sat, 20 Apr 2013 17:59:25 +0000 (UTC)
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 56821] an ext4 commit ee0906f causes weird disk hangs

https://bugzilla.kernel.org/show_bug.cgi?id=56821

--- Comment #3 from Tommi Kyntola <kynde@...ray.fi>  2013-04-20 17:59:25 ---
Yes to software raid, I thought I mentioned it there already, but evidently I
skipped that bit, sorry.

I can strace the thunderbird launch, which is still the only way I've managed
to trigger it, but thankfully it triggers it every time, but we'll have to wait
until Monday as it's my office box.

You wouldn't happen to have ideas what I should/could try to cause that in a
cleaner way? (i.e. should I be generating load with large files or lots of
small ones, lots of concurrent action or will a single thread do, etc) 

And what else should I be trying? Stipping down kernel config? Would ext4
debugs help?

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