libvirt users - Aug 2020 - Re: python-libvirt domain.destroy() doesn't appear to be working for me

I'm using the python-libvirt library and finding that I cannot get
.destroy() or .shutdown() to work.

https://github.com/simora/docker-libvirt-flask/blob/cba6041b47bdf4ccb3b9506a0379cf8c788a9a57/root/app/mqtt.py#L96

That is the line in my code. .create() works fine and using virsh in the
docker container works fine to destroy the domain as well.

This is based on ubuntu bionic in a docker container with the libvirt
socket and such made available. .create() works, listing works and virsh
works so permissions are not the issue. I'm confident I have failed to
properly use the function or am missing the appropriate logging.

Any assistance would be greatly appreciated.

I clearly did something wrong but now it appears to be operating as
expected. Sorry and thank you.

On Sat, Aug 22, 2020 at 10:32 AM Jeremy Markle <jeremy.markle@gmail.com>
wrote:
> I'm using the python-libvirt library and finding that I cannot get
> .destroy() or .shutdown() to work.
>
>
>
https://github.com/simora/docker-libvirt-flask/blob/cba6041b47bdf4ccb3b9506a0379cf8c788a9a57/root/app/mqtt.py#L96
>
> That is the line in my code. .create() works fine and using virsh in the
> docker container works fine to destroy the domain as well.
>
> This is based on ubuntu bionic in a docker container with the libvirt
> socket and such made available. .create() works, listing works and virsh
> works so permissions are not the issue. I'm confident I have failed to
> properly use the function or am missing the appropriate logging.
>
> Any assistance would be greatly appreciated.
>

On Sat, Aug 22, 2020 at 10:32:09AM -0400, Jeremy Markle
wrote:
> I'm using the python-libvirt library and finding that I cannot get
> .destroy() or .shutdown() to work.
> 
>
https://github.com/simora/docker-libvirt-flask/blob/cba6041b47bdf4ccb3b9506a0379cf8c788a9a57/root/app/mqtt.py#L96
Your code has alot of "< 0" checks. This is the C API behaviour to
return -1
on error.  In python we raise exceptions on error. so you try try/except to
catch them

Daniel

I was simply following the examples in the python-libvirt repo. If those
methods raise exceptions I'll definitely change to try/catch. Thank you.
The maintainer of the repo should update the examples and documentation if
exceptions are raised by those.

On Mon, Aug 24, 2020, 05:31 Daniel P. Berrangé <berrange@redhat.com>
wrote:
> On Sat, Aug 22, 2020 at 10:32:09AM -0400, Jeremy Markle wrote:
> > I'm using the python-libvirt library and finding that I cannot get
> > .destroy() or .shutdown() to work.
> >
> >
>
https://github.com/simora/docker-libvirt-flask/blob/cba6041b47bdf4ccb3b9506a0379cf8c788a9a57/root/app/mqtt.py#L96
>
> Your code has alot of "< 0" checks. This is the C API
behaviour to return
> -1
> on error.  In python we raise exceptions on error. so you try try/except to
> catch them
>
> Daniel
>
>