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Re: tasks hangs in D state while writing to xfs

To: Dave Chinner <david@xxxxxxxxxxxxx>
Subject: Re: tasks hangs in D state while writing to xfs
From: Marcin Mirosław <marcin@xxxxxxxx>
Date: Sun, 16 Oct 2011 13:48:45 +0200
Cc: linux-xfs@xxxxxxxxxxx
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W dniu 2011-10-16 00:09, Dave Chinner pisze:
> Known problem - it's a log space hang. You can often get stuff
> moving again via "echo 2 > /proc/sys/vm/drop_caches".
> That said, Christoph's fixes for the 3.0.x kernel series are here:
> http://oss.sgi.com/archives/xfs/2011-10/msg00305.html

Thanks for link. I've tried kernel linux-3.1-rc9, xfs behaves better but
still is something not right. I'm rsyncincg many files, after sometime
rsync hangs, it looks like do nothing for about 30-90 seconds and
continues copying. I did run "sync" when rsync was hanging and sync also
hangs. It looks like xfs has hiccup.

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