virtio notes

We have found that virtio is faster/more stable than emulating other cards on our VMs.

To switch a VM to virtio:

  • Remove from DNS if it’s a proxy

  • Log into the vm and shut it down

  • Log into the virthost that the VM is on, and sudo virsh edit <VM FQDN>

  • Add this line to the appropriate bridge interface(s):

    <model type='virtio'/>

  • Save/quit the editor

  • sudo virsh start <VM FQDN>

  • Re-add to DNS if it’s a proxy