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* raid related kernel hang in 2.6.36
@ 2010-11-24 13:48 Du Jun
  2010-11-24 14:19 ` Mathias Burén
  0 siblings, 1 reply; 8+ messages in thread
From: Du Jun @ 2010-11-24 13:48 UTC (permalink / raw)
  To: linux-raid

Hi,
We just quick tested the raid stability under the vanilla 2.6.36 kernel
and got an unstable result.

first, we create a raid5 array using 16 sata disks:

mdadm -C /dev/md10 -l 5 -n 16 /dev/sd[b-q]

then use dd to stress the io:

dd if=/dev/zero of=/dev/md10 bs=1M

After a while, usually several minutes, the system hangs. It looks like
some kind of kernel deadlock. ping to this machine could get timely
response, however, any other process just hangs.

It is easily reproducible and everytime the test result is a system hang.

Johnson


^ permalink raw reply	[flat|nested] 8+ messages in thread

end of thread, other threads:[~2011-02-11 15:52 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2010-11-24 13:48 raid related kernel hang in 2.6.36 Du Jun
2010-11-24 14:19 ` Mathias Burén
2010-11-24 14:34   ` Du Jun
2010-11-24 20:01     ` Neil Brown
2010-11-24 21:15       ` Carlos Carvalho
2010-11-25  3:12       ` dujun
2011-02-10 16:28         ` Iordan Iordanov
2011-02-11 15:52           ` Iordan Iordanov

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