[Bug 882579] Re: Some Commands return: "Timed out during operation: cannot acquire state change lock"

[nutznboltz]

Today two VM hosts running kernel 2.6.38-11, one with with 14 guests and
another with 53 had scheduled reboots of the many of their guests.

On the VM host with 14 guests, 11 rebooted. On the one with 53 guests,
48 rebooted.

VM guests that automatically rebooted this morning at 6:30 AM via at(8)
hung instead of rebooted.

All of the VM guests were rebooting from kernel 2.6.38-11 into 2.6.38-12

Not all of the VM guests on the hosts were scheduled to be rebooted.

"virsh shutdown" and "virsh destroy" appeared to always hang.

After using "kill -9" on the PID of the VM guest "virsh start" for that
guest worked every time.

Initially on the VM hosts "virsh list" would output some VM names then
hang.

After enough VM guests were reset via "kill -9" (but before all of them
were) "virsh list" became able to run to completion.

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https://bugs.launchpad.net/bugs/882579

Title:
  Some Commands return: "Timed out during operation: cannot acquire
  state change lock"

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