Re: Hung Virtual Machine

[Robert McBroom]

On 9/26/23 10:16, stan via users wrote:
>  On Mon, 25 Sep 2023 10:12:46 -0400
>  Robert McBroom via users<users(a)lists.fedoraproject.org>  wrote:
>
> > Power outage dropped my f38 system while a virtual Rawhide system was
> > running. On restart the virtual machine is paused and none of the
> > virt-manager shutdown, reset or delete work. It wasn't supposed to
> > come up on a host restart. What can be done to clear the lock?
> >
> >
> >
> > Error resetting domain: Timed out during operation: cannot acquire
> > state change lock (held by monitor=remoteDispatchDomainCreate)
> >
> > Traceback (most recent call last):
> >     File "/usr/share/virt-manager/virtManager/asyncjob.py", line 72,
> > in cb_wrapper
> >       callback(asyncjob, *args, **kwargs)
> >     File "/usr/share/virt-manager/virtManager/asyncjob.py", line 108,
> > in tmpcb
> >       callback(*args, **kwargs)
> >     File
> > "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line
> > 57, in newfn ret = fn(self, *args, **kwargs)
> >             ^^^^^^^^^^^^^^^^^^^^^^^^^
> >     File "/usr/share/virt-manager/virtManager/object/domain.py", line
> > 1393, in reset
> >       self._backend.reset(0)
> >     File "/usr/lib64/python3.11/site-packages/libvirt.py", line 2408,
> > in reset
> >       raise libvirtError('virDomainReset() failed')
> > libvirt.libvirtError: Timed out during operation: cannot acquire
> > state change lock (held by monitor=remoteDispatchDomainCreate)
>  Was curious, so did some searching.  Not familiar with qemu or libvirt,
>  so might or might not help you.
>
>  This seems to have happened in the past, as well.  What I can glean
>  from this bug report is that libvirt and qemu being out of synch caused
>  it.
>  https://bugzilla.redhat.com/show_bug.cgi?id=1530346
>
>  This bug report in arch seems to support that it is a mismatch.
>  https://bugs.archlinux.org/task/63516
>
>  Both of these are older, so it might be a regression because something
>  else was fixed.  You could try reinstalling qemu on the host.  One
>  comment mentioned restarting libvirt was successful.
>
>  A really old link, but it sounds a lot like your problem, so the
>  solution might still work.
>
>
> https://stackoverflow.com/questions/16763240/libvirt-cannot-stop-reboot-f...
upgraded to f39 beta and the problem was cured. Sledgehammer approach