Can't snapshot a VM with InstanceType and Preference

4.18

Always

1. Create a VM with InstanceType

2. Create a Snapshot

$ cat snap.yaml 
apiVersion: snapshot.kubevirt.io/v1beta1
kind: VirtualMachineSnapshot
metadata:
  name: snapp-larryy
spec:
  source:
    apiGroup: kubevirt.io
    kind: VirtualMachine
    name: fedora-pink-fowl-56

VMSnapshot fails

$ oc get vmsnapshot 
NAME           SOURCEKIND       SOURCENAME            PHASE        READYTOUSE   CREATIONTIME   ERROR
snap-larry     VirtualMachine   fedora-pink-fowl-56   Failed       false                       
snapp-larryy   VirtualMachine   fedora-pink-fowl-56   InProgress   false                       

VM YAML (in attempt to create snap-larry)
$ oc get vm fedora-pink-fowl-56 -oyaml apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  annotations:
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/storage-observed-api-version: v1
  creationTimestamp: "2024-11-14T13:04:17Z"
  finalizers:
  - kubevirt.io/virtualMachineControllerFinalize
  - snapshot.kubevirt.io/snapshot-source-protection
  generation: 2
  name: fedora-pink-fowl-56
  namespace: default
  resourceVersion: "3101414"
  uid: 45dfa549-8eba-446e-a68f-74af099df625
spec:
  dataVolumeTemplates:
  - metadata:
      creationTimestamp: null
      name: fedora-pink-fowl-56-volume
    spec:
      sourceRef:
        kind: DataSource
        name: fedora
        namespace: openshift-virtualization-os-images
      storage:
        resources:
          requests:
            storage: 32Gi
        storageClassName: ocs-storagecluster-ceph-rbd-virtualization
  instancetype:
    kind: virtualmachineclusterinstancetype
    name: u1.small
    revisionName: fedora-pink-fowl-56-u1.small-v1beta1-4d265fab-aa83-45bc-b986-b7460b20eb3a-1
  preference:
    kind: virtualmachineclusterpreference
    name: fedora
    revisionName: fedora-pink-fowl-56-fedora-v1beta1-110e8a5e-5456-4b91-88f1-b653a988c9ec-1
  runStrategy: Always
  template:
    metadata:
      creationTimestamp: null
      labels:
        network.kubevirt.io/headlessService: headless
    spec:
      architecture: amd64
      domain:
        devices:
          autoattachPodInterface: false
          interfaces:
          - macAddress: 02:e6:8b:00:00:01
            masquerade: {}
            name: default
        machine:
          type: pc-q35-rhel9.4.0
        resources: {}
      networks:
      - name: default
        pod: {}
      subdomain: headless
      volumes:
      - dataVolume:
          name: fedora-pink-fowl-56-volume
        name: rootdisk
      - cloudInitNoCloud:
          userData: |
            #cloud-config
            chpasswd:
              expire: false
            password: jk45-qitu-n84f
            user: cloud-user
        name: cloudinitdisk
status:
  conditions:
  - lastProbeTime: null
    lastTransitionTime: "2024-11-14T13:05:15Z"
    status: "True"
    type: Ready
  - lastProbeTime: null
    lastTransitionTime: null
    message: All of the VMI's DVs are bound and not running
    reason: AllDVsReady
    status: "True"
    type: DataVolumesReady
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: LiveMigratable
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: StorageLiveMigratable
  - lastProbeTime: "2024-11-14T13:06:05Z"
    lastTransitionTime: null
    status: "True"
    type: AgentConnected
  created: true
  desiredGeneration: 2
  observedGeneration: 2
  printableStatus: Running
  ready: true
  runStrategy: Always
  snapshotInProgress: snap-larry
  volumeSnapshotStatuses:
  - enabled: true
    name: rootdisk
  - enabled: false
    name: cloudinitdisk
    reason: Snapshot is not supported for this volumeSource type [cloudinitdisk]
 

Snapshot is ReadyToUse

Logs from the virt-controller:

$ oc logs -n openshift-cnv virt-controller-9c574ccd5-khftz

E1114 13:23:53.844496       1 util.go:72] "Unhandled Error" err="Operation cannot be fulfilled on virtualmachinesnapshots.snapshot.kubevirt.io \"snapp-larryy\": the object has been modified; please apply your changes to the latest version and try again" logger="UnhandledError" 

{"component":"virt-controller","level":"info","msg":"Adding VM snapshot finalizer to fedora-pink-fowl-56","pos":"source.go:120","timestamp":"2024-11-14T13:23:53.857939Z"} 

E1114 13:23:53.921655       1 util.go:72] "Unhandled Error" err="controllerrevisions.apps \"snapp-larryy-u1.small-v1beta1-4d265fab-aa83-45bc-b986-b7460b20eb3a-1\" is forbidden: cannot set blockOwnerDeletion if an ownerReference refers to a resource you can't set finalizers on: , <nil>" logger="UnhandledError"