[libvirt-users] aliases for graphic devices

[Daniel P. Berrange]

On Wed, May 14, 2014 at 03:41:38PM -0400, Francesco Romani wrote:
> ----- Original Message -----
> > From: "Daniel P. Berrange" <berrange at redhat.com>
> > To: "Eric Blake" <eblake at redhat.com>
> > Cc: "Francesco Romani" <fromani at redhat.com>, libvirt-users at redhat.com
> > Sent: Wednesday, May 14, 2014 7:24:13 PM
> > Subject: Re: [libvirt-users] aliases for graphic devices
> > 
> > On Wed, May 14, 2014 at 10:28:13AM -0600, Eric Blake wrote:
> > > On 05/14/2014 09:47 AM, Francesco Romani wrote:
> > > > Hello,
> > > > 
> > > > AFAIK, aliases cannot be set for Graphics devices. I tried this very
> > > > simple experiment
> > > > with libvirt 1.2.4 (from virt-preview on F20)
> > > > 
> > > > relevant part of the input xml:
> > > > 
> > > >     <graphics type='spice' port='-1' autoport='yes' listen='127.0.0.1'>
> > > >       <listen type='address' address='127.0.0.1'/>
> > > >       <alias name='display.0'/>
> > > >     </graphics>
> > > 
> > > Aliases are output-only; they are ignored on input.  Libvirt demands
> > > total control over the alias field, because it interacts with qemu via
> > > the alias that libvirt chooses.
> > 
> > Furthermore with older QEMU versions, we have no choice in aliases - we
> > had to use what QEMU hardcoded
> 
> Thanks to you and to Eric for the answers.
> 
> If I understood correctly there are no plans to have libvirt-generated aliases
> for the graphics devices, is that true?
> 
> If so, I think the only way to distinguish the graphics device is per type (spice, vnc,...),
> and the final implication of this hypothesis is that no more of one device per type
> is supported, right?

Correct, there should be at most one entry per type.


Regards,
Daniel
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