I wanted to know if it's possible to use OVN networking and virtio simultaneously in the same VM? Or am I wasting my time trying to get it to work?
In oVirt 4.x I was able to do it and also to intermix normal vnic and OVN based vnic.
I needed to reproduced a problem I had in a physical Red Hat Cluster. So i "cloned" the physical nodes to oVirt VMs and the vnic of the intracluster network of this virtual RedHat cluster was put on OVN, while the production vnic was on a normal lan.
Both with virtio as the network type and the second with openvswitch virtualport.
I just simulate it on a RHV 4.3.7 env and it starts ok
the snippet of the dynamic xml definition that RHV creates is this one (note some RHV related parameters not pertinent to your env I think).
Note also that on OVN based nics I often put 1442 as the mtu size.
<interface type='bridge'>
<mac address='00:1a:4a:16:01:1d'/>
<source bridge='vlan65'/>
<target dev='vnet0'/>
<model type='virtio'/>
<driver name='vhost' queues='2'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='down'/>
<mtu size='1500'/>
<alias name='ua-8ccec0e9-c32d-4021-8a06-3d24280536b8'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='bridge'>
<mac address='00:1a:4a:16:01:20'/>
<source bridge='br-int'/>
<virtualport type='openvswitch'>
<parameters interfaceid='9c0927a8-2256-44f3-b089-0e8923055747'/>
</virtualport>
<target dev='vnet1'/>
<model type='virtio'/>
<driver name='vhost' queues='2'/>
<link state='up'/>
<mtu size='1442'/>
<alias name='ua-ea95c1fe-b226-4a64-ad30-ee5cb2da08ca'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</interface>
On this particular environment RHV provides these packages:
ovn2.11-2.11.1-8.el7fdp.x86_64
openvswitch2.11-2.11.0-26.el7fdp.x86_64
libvirt-4.5.0-23.el7_7.3.x86_64
qemu-kvm-rhev-2.12.0-33.el7_7.4.x86_64
Which kind of errors do you get in term of functionality? no connection between two VMs on the same OVN networking subnet?
How did you configure OVN? I ask because in oVirt/RHV now you do it from a general setup command and then through web gui admin, not manually
Your OS?
HIH,
Gianluca