Ovs error when starting vm: ovs-vsctl: 'del-port' command requires at least 1 arguments

[Thomas Pircher]

Hi,

my system got updated to libvirt 6.0.0 (from 5.6.0) this morning, and
now I'm having problems starting VMs that make use of openvswitch
portgroups.

When I start a VM, I get this error message on virsh:
> virsh # start testvm
> error: Failed to start domain testvm
> error: An error occurred, but the cause is unknown

The system log contains:

> Mar 30 09:45:39 tplinux ovs-vsctl[2763]: ovs|00001|db_ctl_base|ERR|'del-port' command requires at least 1 arguments
> Mar 30 09:45:39 tplinux libvirtd[735]: internal error: Child process (ovs-vsctl --timeout=5 -- --if-exists del-port) unexpected exit status 1: ovs-vsctl: 'del-port' command requires at least 1 arguments
> Mar 30 09:45:39 tplinux libvirtd[735]: internal error: Unable to delete port (null) from OVS

My network "test-net" looks like:

> <network>
>   <name>test-net</name>
>   <forward mode='bridge'/>
>   <bridge name='test-net'/>
>   <virtualport type='openvswitch'/>
>   <portgroup name='fabric' default='yes'>
>     <vlan trunk='yes'>
>       <tag id='10' nativeMode='untagged'/>
>       <tag id='20'/>
>       <tag id='30'/>
>       <tag id='40'/>
>       <tag id='50'/>
>       <tag id='60'/>
>       <tag id='70'/>
>     </vlan>
>   </portgroup>
> </network>

And the network in the domain xml file is:

>     <interface type='network'>
>       <mac address='01:23:45:67:89:ab'/>
>       <source network='test-net' portgroup='fabric'/>
>       <model type='e1000'/>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
>     </interface>

I didn't see any change in the changelog related to ovs or portgroups.
Is there something I need to change in my VM definition?

Thanks,
Thomas