Description of problem:

As discussed in MIG-1869 and CNV-80398, in 4.21 the migration controller in CNV is not checking the PVCs for the existing of the annotation below. But in 4.20 and lower  MTC did check that and according to the discussions checking for the annotation is the correct behaviour.

cdi.kubevirt.io/storage.contentType: kubevirt

Version-Release number of selected component (if applicable):

4.21

How reproducible:

Always

Steps to Reproduce:

1. Create a Filesystem plain/blank PVC
2. Attach it directly to a VM
3. Perform live storage migration

Actual results:

Migration succeeds

Expected results:

Warning or Block that one of the PVC may not be a proper VM disk.