Bug#517449: Found in standard Lenny kernel
On Thu, Aug 06, 2009 at 08:14:07AM +0100, Berni Elbourn wrote:
> Linux sv28 2.6.26-2-amd64 #1 SMP Fri Mar 27 04:02:59 UTC 2009 x86_64
> GNU/Linux
Please include the output of /proc/version, it is difficult to map
this back to an actual kernel version. But.. it looks like you might
be running something before 2.6.26-16, whcich was built on Jun 10?
2.6.26-16 and later includes a fix for soft lockups during raid resync
if multiple md devices share the same underlying block device. I can't
tel if this is the case for you.
> CPU0: Quad-Core AMD Opteron(tm) Processor 2372 HE stepping 02
>
> Once again during the monthly mdadm re-sync ... And it started at the
> time of normal system backups.
>
> Here's the log snippet:
>
> Aug 6 04:03:04 sv28 kernel: [1291504.252722] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:04:30 sv28 kernel: [1291680.356669] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:05:36 sv28 kernel: [1291814.493607] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:07:08 sv28 kernel: [1291991.663419] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:09:36 sv28 kernel: [1292301.987361] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:12:30 sv28 kernel: [1292643.427055] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.345568] INFO: task kvm:4449
> blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.345816] INFO: task kvm:4450
> blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.346118] INFO: task kvm:4451
> blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.349674] INFO: task
> md1_resync:17780 blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.349674] INFO: task
> md2_resync:17782 blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.349674] INFO: task partimage:18809
> blocked for more than 120 seconds.
> Aug 6 04:14:28 sv28 kernel: [1292773.349674] INFO: task pdflush:18830
> blocked for more than 120 seconds.
>
> In this case I was able to recover the services with a reboot -nf
>
> Time to roll my own kernel ... :-(
>
>
>
>
--
dann frazier
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