libvirt users - Jan 2011 - Timed out during operation: cannot acquire state change lock

Hi, 

I am looking for help to troubleshoot: 

node002 ~ # virsh
virsh # list
 Id Name State
----------------------------------
 1 dom001 paused

virsh # resume dom001
error: Failed to resume domain dom001
error: Timed out during operation: cannot acquire state change lock

virsh # 

then I've looked into /var/run/libvirt/qemu 

node002 ~ # ls -l /var/run/libvirt/qemu/
total 8
-rw------- 1 root root 5 Jan 10 17:41 dom001.pid
-rw------- 1 root root 2785 Jan 10 17:47 dom001.xml

node002 ~ # ps ax|grep 16681
16681 ?        Sl     6:07 /usr/bin/qemu-system-x86_64 --enable-kvm -S -M
pc-0.13 -enable-kvm -m 512 -smp 2,sockets=2,cores=1,threads=1 -name dom001
-uuid 357d1d40-31a1-ca62-da4b-5c6f9f5f1399 -nodefconfig -nodefaults
-chardev
socket,id=monitor,path=/var/lib/libvirt/qemu/dom001.monitor,server,nowait
-mon chardev=monitor,mode=control -rtc base=utc -boot c -kernel
/srv/kernels/kernel-2.6.36-gentoo-r5-2 -append console=tty1 root=/dev/vda
-device lsi,id=scsi0,bus=pci.0,addr=0x6 -drive
file=/dev/vg_node002/dom001_root,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device
virtio-blk-pci,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0
-drive
file=/dev/vg_node002/dom001_swap,if=none,id=drive-virtio-disk1,format=raw
-device
virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk1,id=virtio-disk1
-netdev tap,fd=61,id=hostnet0 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:29:98:f8,bus=pci.0,addr=0x7
-chardev pty,id=serial0 -device isa-serial,chardev=serial0 -usb -vnc
127.0.0.1:0 -vga cirrus -device
virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5

I have used virt-manager to start the machine (KVM+QEMU), then I tried to
pause the machine and the virt-manager was gray for long time so I killed
it. Now I cannot resume the machine. Any tips? 

Regards, 

Robert

The 11/01/11, Robert ?mol wrote:
> Hi, 
> 
> I am looking for help to troubleshoot: 
> 
> node002 ~ # virsh
> virsh # list
>  Id Name State
> ----------------------------------
>  1 dom001 paused
> 
> virsh # resume dom001
> error: Failed to resume domain dom001
> error: Timed out during operation: cannot acquire state change lock
You may have hit a bug corrected by this patch
http://comments.gmane.org/gmane.comp.emulators.libvirt/28718?set_cite=hide

I would check your libvirt version has this bugfix and upgrade if
needed.  I don't remember the version having this fix, sorry.

-- 
Nicolas Sebrecht