A storageClassName can be provided when defining a DataVolume or PVC  for use by a VirtualMachine. It would be useful if we could define a preferred storageClassName as part of a preference for use when no user provided value is present. For example:

—
apiVersion: instancetype.kubevirt.io/v1alpha2
kind: VirtualMachinePreference
metadata:
  name: ceph
spec:
  volumes:
    preferredStorageClassName: ceph