[virt-tools-list] Error saving / shuting down VM

Bruno Lamps lampss at gmail.com
Tue May 10 11:37:55 UTC 2011


Yesterday I started trying to backup my VMs, using "virsh save
/path/to/VMmemory", rsyncing the memory and the hard disk file and after the
copy typing "virsh restore /path/to/VMmemory". But my first test was
unsucessful, the VM didn't shutoff after "virsh save", as expected. Now I
can't restore the machine, it's kinda locked. I googled the issue, and found
this page: https://bugzilla.redhat.com/show_bug.cgi?id=676205

It says the problem was solved in libvirt 0.9, so tonight, after business
time, i'll try to update the system (ubuntu 10.04 lts). But the VM is paused
and I am unable to put it working again. My ldap server is running in this
VM, it's in production, my boss isn't finding this situation any funny....

How can I put this VM back running? The machine was paused, and I was unable
to restore or shutdown it. So I did these commands:

killall -9 libvirtd

rm /var/run/libvirtd.pid

/etc/init.d/libvirt-bin restart

Libvirt restarted, now my VM is shown in virt-manager as "running",
but I cant open it, ssh it or shutdown it. If I try
"virsh destroy machine", I get the following message:

virsh # destroy ldapdebian
> erro: Falha ao destruir o domínio ldapdebian
> erro: Timed out during operation: cannot acquire state change lock

If I try to shutdown it using virt-manager, I get this error message:

Error shutting down domain: Timed out during operation: cannot acquire state
> change lock
> Details:
> Traceback (most recent call last):
>   File "/usr/local/share/virt-manager/virtManager/engine.py", line 911, in
> _do_destroy_domain
>     vm.destroy()
>   File "/usr/local/share/virt-manager/virtManager/domain.py", line 1154, in
> destroy
>     self._backend.destroy()
>   File "/usr/lib/python2.7/dist-packages/libvirt.py", line 346, in destroy
>     if ret == -1: raise libvirtError ('virDomainDestroy() failed',
> dom=self)
> libvirtError: Timed out during operation: cannot acquire state change lock

Thanks in advance for any help. =D
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