tasks hangs in D state while writing to xfs

[Marcin Mirosław]

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.
Regards,
Marcin