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/ _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
