libvirt users - May 2021 - virHostdevIsPCINodeDeviceUsed

On 5/17/21 8:36 PM, Simon Fairweather wrote:
> I am looking to be able to check if a specific PCI device is allocated to a
> guest.
> 
> An error is produced if a domain is started and the device is in use within
> another domain via this function.
> 
> I cannot see a publicly available function to use to get this information,
> is there one available or is there another way to check the state of the
> PCI device.
> 
Yeah, there's no public API. So far we recommended mgmt apps to track
the usage themselves, however I don't see why we shouldn't have a new
API, say:

int virNodeDeviceGetUsed(virNodeDevicePtr dev, char **drvname, char
**domname);

Can you please open a gitlab issue for this? Or, are you willing to
submit patches?

Michal

Thanks, I will raise an issue and look to see if I can raise a patch.

Regards
Simon

On Wed, May 19, 2021 at 11:38 AM Michal Pr?vozn?k <mprivozn at redhat.com>
wrote:
> On 5/17/21 8:36 PM, Simon Fairweather wrote:
> > I am looking to be able to check if a specific PCI device is allocated
> to a
> > guest.
> >
> > An error is produced if a domain is started and the device is in use
> within
> > another domain via this function.
> >
> > I cannot see a publicly available function to use to get this
> information,
> > is there one available or is there another way to check the state of
the
> > PCI device.
> >
>
> Yeah, there's no public API. So far we recommended mgmt apps to track
> the usage themselves, however I don't see why we shouldn't have a
new
> API, say:
>
> int virNodeDeviceGetUsed(virNodeDevicePtr dev, char **drvname, char
> **domname);
>
> Can you please open a gitlab issue for this? Or, are you willing to
> submit patches?
>
> Michal
>
>
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