Re: [libvirt-users] Cannot get interface MTU - qemu quest fails to start off OpenVswitch

On 10/05/2019 14:44, Michal Privoznik wrote: > On 5/10/19 3:26 PM, lejeczek wrote: >> hi guys >> >> I have a qemu guest and openvswitch bridge and the guest fails to start: >> >> $ virsh start work8 >> error: Failed to start domain work8-vm-win2016 >> error: Cannot get interface MTU on 'ovsbr0': No such device > > Well, this means that 'ovsbr0' doesn't exist. Is that so? Can you > share your <interface/> configuration and the network XML? > > Michal so if your libvirt's net is like this: <network>   <name>ovs-br0</name>   <uuid>e5129e76-1576-4866-97e1-42f14263cfc2</uuid>   <forward mode='bridge'/>   <bridge name='ovsbr0'/>   <virtualport type='openvswitch'/> .... then you need extra(extra for ovs tools create both for us at bridge creation time and nmcli(you) need to create those explicitly) port+iface so this: $ ovs-vsctl show output will contain this: ... Port "ovsbr0"             Interface "ovsbr0"                 type: internal