linux-ext4 - [Bug 43292] jdb2 lockup with ext3 and nfs

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Message-Id: <20120531214038.4714111FD1B@bugzilla.kernel.org>
Date:	Thu, 31 May 2012 21:40:38 +0000 (UTC)
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 43292] jdb2 lockup with ext3 and nfs

https://bugzilla.kernel.org/show_bug.cgi?id=43292





--- Comment #11 from Florian Pritz <flo@...n.at>  2012-05-31 21:40:38 ---
Created an attachment (id=73480)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=73480)
output of dumpe2fs /dev/dm-2

(In reply to comment #10)
> I have to say I'm puzzled. Everything looks normal, the IO is submitted and
> completed, no sign of any hang. Just the last request - read - has been only
> submitted to disk and not yet completed but that can be just a coincidence. To
> check what has been read, can you attach here output of dumpe2fs /dev/dm-2?

I've run it without the hanging nfsd, is that correct?

> When the lockup happens, those nfsd threads are sitting there doing nothing for
> a long time, am I right?

Yeah. All nfs activity is frozen, but local system activity on the same file
system works just fine.

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