[Pkg-libvirt-maintainers] Bug#778235: Bug#778235: libvirt0: Migration drops elements from XML

[Guido Günther]

On Thu, Feb 12, 2015 at 04:34:35PM +0100, Martin Sofaru wrote:
> On 12/02/15 16:02, Guido Günther wrote:
> > On Thu, Feb 12, 2015 at 02:54:20PM +0100, Martin Sofaru wrote:
> >> Package: libvirt0
> >> Version: 1.2.9-9
> >> Severity: important
> >> Tags: patch
> >>
> >> Dear Maintainer,
> >>
> >>
> >> when migrating a VM the actual XML "virsh dumpxml <vm>" is copied to the
> >> target host. This drops important elements like portgroups out of a
> >> network configuration.
> > 
> > You don't provide much information. Which elemnts are wrong for you
> > (e.g. provide a diff and the original configuration).
> 
> The origin XML (--inactive) looks like this:
> 
>     <interface type='network'>
>       <mac address='52:54:00:12:34:56'/>
>       <source network='ovs' portgroup='foo'/>
>       <target dev='bar'/>
>       <model type='virtio'/>
>       <driver name='vhost'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
> 
> After migration the origin XML (--inactive) becomes the same as the
> actual XML (without --inactive):
> 
>     <interface type='bridge'>
>       <mac address='52:54:00:12:34:56'/>
>       <source bridge='br0'/>
>       <virtualport type='openvswitch'>
>         <parameters interfaceid='60cd8a2e-c182-44d1-b613-32a8a042bf9e'/>
>       </virtualport>
>       <target dev='bar'/>
>       <model type='virtio'/>
>       <driver name='vhost'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03'
> function='0x0'/>
>     </interface>
> 
> The information about the portgroup is lost after migration!
> 
> > Did you check that the patch fixes your problem?
> 
> No. I originally reported the issue to libvirt upstream and was told the
> issue was fixed with that commit.
> 
> I am trying to verify if this single commit is enough to fix the issue.

You can also try the version from experimental and see if it helps. If
so we can try to isolate the fix for jessie (I'm currently lacking
the time for any serious libvirt or Debian work though).
Cheers,
 -- Guido