[libvirt-users] VIR_ERR_OPERATION_INVALID from virDomainDestroyFlags call

[Milan Zamazal]

"Daniel P. Berrange" <berrange at redhat.com> writes:

> On Fri, Mar 17, 2017 at 02:07:11PM +0100, Milan Zamazal wrote:
>> "Daniel P. Berrange" <berrange at redhat.com> writes:
>> 
>> > On Fri, Mar 17, 2017 at 11:55:13AM +0100, Milan Zamazal wrote:
>> >> Hi, we experienced a strange, non-reproducible error after a successful
>> >> migration to another host.  When we called virDomainDestroyFlags with
>> >> VIR_DOMAIN_DESTROY_GRACEFUL flag after the migration on the source host,
>> >> we got VIR_ERR_OPERATION_INVALID (code 55) error.  The same with
>> >> repeated virDomainDestroyFlags calls.  Normally, we would expect either
>> >> success or VIR_ERR_NO_DOMAIN error.  `virsh list' didn't show the VM.
>> >
>> > What about 'virsh list --all' - i expect you have an inactive guest
>> > present, as calling destory on an inactive guest triggers OPERATION_INVALID
>> 
>> I see.  It's interesting, since we use transient domains.  Are there
>> known circumstances when OPERATION_INVALID could be returned for a
>> transient domain?  Can we assume that we never receive that error when
>> trying to destroy a running domain?
>
> Cleanup & destruction of domains is an area where there is relatively
> high level of concurrency in libvirt. So it is conceivable that you
> would see OPERATION_INVALID for a transient guest if libvirt is part
> way through cleaning it up - it shouldn't be in that state for very
> long though

We had the state returning OPERATION_INVALID for "infinite" time.  That
could be caused by some bug or maybe problems with storage or whatever,
we don't know.

> You'll never see OPERATION_INVALID if the guest is truely running - it
> will either be shutoff, or in the process of becoming shutoff very soon.

OK, thank you for explanation and clarification.

Regards,
Milan