On 10/2/2009 2:30 PM, Jeremy Fitzhardinge wrote:
On 09/30/09 14:11, Shirley Ma wrote:
Anybody found this problem before? I kept hitting this issue for 2.6.31
guest kernel even with a simple network test.
INFO: task kjournal:337 blocked for more than 120 seconds.
"echo 0> /proc/sys/kernel/hung_task_timeout_sec" disables this message.
kjournald D 00000041 0 337 2 0x00000000
My test is totally being blocked.
I'm assuming from the lists you've posted to that this is under KVM?
What disk drivers are you using (virtio or emulated)?
Can you get a full stack backtrace of kjournald?
Kevin Bowling submitted a RH bug against Xen with apparently the same
symptoms (https://bugzilla.redhat.com/show_bug.cgi?id=526627). I'm
wondering if there's a core kernel bug here, which is perhaps more
easily triggered by the changed timing in a virtual machine.
Thanks,
J
I've had a stable system thus far by appending "clocksource=jiffies" to
the kernel boot line. The default clocksource is otherwise "xen".
The dmesg boot warnings in my bugzilla report still occur.
Regards,
Kevin Bowling
http://www.analograils.com/
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