[Pkg-libvirt-maintainers] Bug#602715: Bug#602715: libvirt-bin: locking problem with libvirt

[Guido Günther]

Hi Lars,
On Sun, Nov 07, 2010 at 01:56:40PM +0000, Lars Wirzenius wrote:
> Package: libvirt-bin
> Version: 0.8.3-3
> Severity: normal
> 
> My libvirt system got into a state where virt-manager would get stuck
> for a couple of minutes, and then give an error about locking problems.
> virsh, likewise. I had been able to start one VM, but starting the
> second one failed.
> 
> "Timed out during operation: cannot acquire state change lock" is
> the error. Here's a representative line from syslog (split into
> three to make it more readable):
> 
> Nov  7 15:23:38 agnes libvirtd: 15:23:38.001: error :
> qemuDomainObjBeginJobWithDriver:410 :
> Timed out during operation: cannot acquire state change lock
> 
> Search engines gave me this:
> 
> http://comments.gmane.org/gmane.comp.emulators.libvirt/28718
> 
> I have not verified that the patch mentioned solves the problem
> for me. I cannot reproduce the problem reliably, but it's happened
> a couple of times now.
> 
> If I restart libvirtd things start working again. The restarting
> fails, though: libvirtd stays running. I killed it with SIGKILL,
> before running "/etc/init.d/libvirt start".

I've merged the patch into the current package and put debs here:

	http://honk.sigxcpu.org/projects/libvirt/snapshots/sid/

Any chance you could test these? The only change is the nwfilter/qemu
locking fix.
Cheers,
 -- Guido