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>
<graphics type='vnc' port='-1' autoport='yes'
listen='127.0.0.1'>
<listen type='address' address='127.0.0.1'/>
<alias name='display.1'/>
</graphics>
# virsh -c qemu:///system
virsh # create testdom_spice_vnc_aliases.xml # see attachment
Domain fedora19 created from testdom_spice_vnc_aliases.xml
virsh # dumpxml fedora19 # only relevant part, see attachment for full output
[...]
<graphics type='spice' port='5900' autoport='yes'
listen='127.0.0.1'>
<listen type='address' address='127.0.0.1'/>
</graphics>
<graphics type='vnc' port='5901' autoport='yes'
listen='127.0.0.1'>
<listen type='address' address='127.0.0.1'/>
</graphics>
[...]
So, are really aliases not allowed for the Graphics Devices or am I doing
something wrong?
If aliases aren't allowed, any plans to support them?
Thanks and best regards,
--
Francesco Romani
RedHat Engineering Virtualization R & D
Phone: 8261328
IRC: fromani
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.> > So, are really aliases not allowed for the Graphics Devices or am I doing something wrong? > If aliases aren't allowed, any plans to support them?No plans to support user-specified aliases on input. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
On Wed, May 14, 2014 at 11:47:16AM -0400, 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> > <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'> > <listen type='address' address='127.0.0.1'/> > <alias name='display.1'/> > </graphics> > > > # virsh -c qemu:///system > virsh # create testdom_spice_vnc_aliases.xml # see attachment > Domain fedora19 created from testdom_spice_vnc_aliases.xml > > virsh # dumpxml fedora19 # only relevant part, see attachment for full output > [...] > <graphics type='spice' port='5900' autoport='yes' listen='127.0.0.1'> > <listen type='address' address='127.0.0.1'/> > </graphics> > <graphics type='vnc' port='5901' autoport='yes' listen='127.0.0.1'> > <listen type='address' address='127.0.0.1'/> > </graphics> > [...] > > So, are really aliases not allowed for the Graphics Devices or am I doing something wrong? > If aliases aren't allowed, any plans to support them?Note that in addition to what Eric said, the <graphics> tags don't represent actual guest devices, so the concept of device aliases doesn't really apply here. Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|
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 Regards, Daniel -- |: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :| |: http://libvirt.org -o- http://virt-manager.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|