LiveMigration failed with 
failureReason: 'Live migration failed error encountered during MigrateToURI3 libvirt       api call: virError(Code=8, Domain=10, Message=''invalid argument: NBD URI must       be supplied when migration URI uses UNIX transport method'')'

Was running on BareMetal cluster: bm02-cnvqe-rdu2

4.19.0

Always, when migrated from HPP to OCS 
Never, when migrated from OCS to OCS

In both cases, vTPM PVC is on HPP

1. Create a Win VM with vTPM (In my case, Win 11, with InstanceType and Preference)
2. Storage migrate the VM 
3. Run virtctl migrate vm-name

$ oc get vmi -A
NAMESPACE                                            NAME                               AGE   PHASE     IP             NODENAME                                  READY
storage-migration-test-mtc-storage-class-migration   windows-11-vm-1750258392-6731908   22m   Running   10.131.1.152   cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com   True


$ virtctl migrate -n storage-migration-test-mtc-storage-class-migration windows-11-vm-1750258392-6731908 
VM windows-11-vm-1750258392-6731908 was scheduled to migrate

$ oc get vmim -A -w
NAMESPACE                                            NAME                             PHASE       VMI
storage-migration-test-mtc-storage-class-migration   kubevirt-migrate-vm-wchgk        Failed      windows-11-vm-1750258392-6731908
storage-migration-test-mtc-storage-class-migration   kubevirt-workload-update-9d25r   Succeeded   windows-11-vm-1750258392-6731908

$ oc get vmim -n storage-migration-test-mtc-storage-class-migration kubevirt-migrate-vm-wchgk -oyaml
apiVersion: kubevirt.io/v1
kind: VirtualMachineInstanceMigration
metadata:
  annotations:
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/storage-observed-api-version: v1
  creationTimestamp: "2025-06-18T15:15:09Z"
  generateName: kubevirt-migrate-vm-
  generation: 1
  labels:
    kubevirt.io/vmi-name: windows-11-vm-1750258392-6731908
  name: kubevirt-migrate-vm-wchgk
  namespace: storage-migration-test-mtc-storage-class-migration
  resourceVersion: "11140994"
  uid: f516895a-681d-4550-ae4f-3f1e5f913836
spec:
  vmiName: windows-11-vm-1750258392-6731908
status:
  migrationState:
    completed: true
    endTimestamp: "2025-06-18T15:15:23Z"
    failed: true
    failureReason: 'Live migration failed error encountered during MigrateToURI3 libvirt
      api call: virError(Code=8, Domain=10, Message=''invalid argument: NBD URI must
      be supplied when migration URI uses UNIX transport method'')'
    migrationConfiguration:
      allowAutoConverge: false
      allowPostCopy: false
      allowWorkloadDisruption: false
      bandwidthPerMigration: "0"
      completionTimeoutPerGiB: 150
      nodeDrainTaintKey: kubevirt.io/drain
      parallelMigrationsPerCluster: 5
      parallelOutboundMigrationsPerNode: 2
      progressTimeout: 150
      unsafeMigrationOverride: false
    migrationUid: f516895a-681d-4550-ae4f-3f1e5f913836
    mode: PreCopy
    sourceNode: cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com
    sourcePersistentStatePVCName: persistent-state-for-windows-11-vm-1750258392-6731908-6xbkc
    sourcePod: virt-launcher-windows-11-vm-1750258392-6731908-l6dhl
    startTimestamp: "2025-06-18T15:15:23Z"
    targetDirectMigrationNodePorts:
      "33571": 0
      "41499": 49152
      "43761": 49153
    targetNode: cnv-qe-12.cnvqe.lab.eng.rdu2.redhat.com
    targetNodeAddress: 10.129.2.58
    targetPersistentStatePVCName: persistent-state-for-windows-11-vm-1750258392-6731908-q9jvp
    targetPod: virt-launcher-windows-11-vm-1750258392-6731908-qc5td
  phase: Failed
  phaseTransitionTimestamps:
  - phase: Pending
    phaseTransitionTimestamp: "2025-06-18T15:15:09Z"
  - phase: Scheduling
    phaseTransitionTimestamp: "2025-06-18T15:15:09Z"
  - phase: Scheduled
    phaseTransitionTimestamp: "2025-06-18T15:15:23Z"
  - phase: PreparingTarget
    phaseTransitionTimestamp: "2025-06-18T15:15:23Z"
  - phase: TargetReady
    phaseTransitionTimestamp: "2025-06-18T15:15:23Z"
  - phase: Failed
    phaseTransitionTimestamp: "2025-06-18T15:15:23Z"

VM Live Migrates successfully

$ oc get vm -n storage-migration-test-mtc-storage-class-migration windows-11-vm-1750258392-6731908 -oyaml
apiVersion: kubevirt.io/v1
kind: VirtualMachine
metadata:
  annotations:
    kubemacpool.io/transaction-timestamp: "2025-06-18T14:59:21.958726678Z"
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/storage-observed-api-version: v1
  creationTimestamp: "2025-06-18T14:53:12Z"
  finalizers:
  - kubevirt.io/virtualMachineControllerFinalize
  generation: 3
  name: windows-11-vm-1750258392-6731908
  namespace: storage-migration-test-mtc-storage-class-migration
  resourceVersion: "11130059"
  uid: 4716d320-ba5a-4b70-836b-f2820c0df0e1
spec:
  dataVolumeTemplates:
  - metadata:
      creationTimestamp: null
      name: windows-11-dv-mig-hbbc
      namespace: storage-migration-test-mtc-storage-class-migration
    spec:
      contentType: kubevirt
      source:
        http:
          certConfigMap: artifactory-configmap
          secretRef: cnv-tests-artifactory-secret
          url: <server>/cnv-qe-server-local/cnv-tests/windows-images/win_11_wsl2.qcow2
      storage:
        resources:
          requests:
            storage: 70Gi
        storageClassName: hostpath-csi-basic
  instancetype:
    kind: VirtualMachineClusterInstancetype
    name: u1.large
  preference:
    kind: VirtualMachineClusterPreference
    name: windows.11
  runStrategy: Always
  template:
    metadata:
      creationTimestamp: null
      labels:
        debugLogs: "true"
        kubevirt.io/domain: windows-11-vm-1750258392-6731908
        kubevirt.io/vm: windows-11-vm-1750258392-6731908
    spec:
      architecture: amd64
      domain:
        devices:
          disks:
          - disk:
              bus: virtio
            name: dv-disk
          rng: {}
        machine:
          type: pc-q35-rhel9.6.0
        resources: {}
      evictionStrategy: None
      volumes:
      - dataVolume:
          name: windows-11-dv-mig-hbbc
        name: dv-disk
  updateVolumesStrategy: Migration
status:
  conditions:
  - lastProbeTime: null
    lastTransitionTime: "2025-06-18T15:00:57Z"
    status: "True"
    type: Ready
  - lastProbeTime: null
    lastTransitionTime: null
    message: All of the VMI's DVs are bound and ready
    reason: AllDVsReady
    status: "True"
    type: DataVolumesReady
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: LiveMigratable
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: StorageLiveMigratable
  - lastProbeTime: "2025-06-18T14:58:40Z"
    lastTransitionTime: null
    status: "True"
    type: AgentConnected
  created: true
  desiredGeneration: 3
  instancetypeRef:
    controllerRevisionRef:
      name: windows-11-vm-1750258392-6731908-u1.large-v1beta1-c7d86666-df8d-4c21-927c-b7c0bab5ae28-1
    kind: VirtualMachineClusterInstancetype
    name: u1.large
  observedGeneration: 2
  preferenceRef:
    controllerRevisionRef:
      name: windows-11-vm-1750258392-6731908-windows.11-v1beta1-8fbff2a8-b405-42e1-8dc9-b4fbaebb14a9-1
    kind: VirtualMachineClusterPreference
    name: windows.11
  printableStatus: Running
  ready: true
  runStrategy: Always
  volumeSnapshotStatuses:
  - enabled: true
    name: dv-disk
  volumeUpdateState:
    volumeMigrationState:
      migratedVolumes:
      - destinationPVCInfo:
          claimName: windows-11-dv-mig-hbbc
          volumeMode: Block
        sourcePVCInfo:
          claimName: windows-11-dv
          volumeMode: Filesystem
        volumeName: dv-disk

$ oc get vmi -n storage-migration-test-mtc-storage-class-migration windows-11-vm-1750260600-0055554 -oyaml
apiVersion: kubevirt.io/v1
kind: VirtualMachineInstance
metadata:
  annotations:
    kubevirt.io/cluster-instancetype-name: u1.large
    kubevirt.io/cluster-preference-name: windows.11
    kubevirt.io/latest-observed-api-version: v1
    kubevirt.io/nonroot: "true"
    kubevirt.io/storage-observed-api-version: v1
    kubevirt.io/vm-generation: "2"
    vm.kubevirt.io/os: windows
  creationTimestamp: "2025-06-18T15:30:01Z"
  finalizers:
  - kubevirt.io/virtualMachineControllerFinalize
  - foregroundDeleteVirtualMachine
  generation: 37
  labels:
    debugLogs: "true"
    kubevirt.io/domain: windows-11-vm-1750260600-0055554
    kubevirt.io/migrationTargetNodeName: cnv-qe-11.cnvqe.lab.eng.rdu2.redhat.com
    kubevirt.io/nodeName: cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com
    kubevirt.io/vm: windows-11-vm-1750260600-0055554
  name: windows-11-vm-1750260600-0055554
  namespace: storage-migration-test-mtc-storage-class-migration
  ownerReferences:
  - apiVersion: kubevirt.io/v1
    blockOwnerDeletion: true
    controller: true
    kind: VirtualMachine
    name: windows-11-vm-1750260600-0055554
    uid: 222b33d6-4129-49bd-af8c-7f0af9338db0
  resourceVersion: "11160142"
  uid: 1d4d45a1-27f2-4252-b08b-4143f0dd7d47
spec:
  architecture: amd64
  domain:
    clock:
      timer:
        hpet:
          present: false
        hyperv:
          present: true
        pit:
          present: true
          tickPolicy: delay
        rtc:
          present: true
          tickPolicy: catchup
      utc: {}
    cpu:
      cores: 1
      maxSockets: 8
      model: host-model
      sockets: 2
      threads: 1
    devices:
      autoattachInputDevice: true
      disks:
      - disk:
          bus: virtio
        name: dv-disk
      inputs:
      - bus: usb
        name: default-0
        type: tablet
      interfaces:
      - masquerade: {}
        model: e1000e
        name: default
      rng: {}
      tpm:
        persistent: true
    features:
      acpi:
        enabled: true
      apic:
        enabled: true
      hyperv:
        frequencies:
          enabled: true
        ipi:
          enabled: true
        reenlightenment:
          enabled: true
        relaxed:
          enabled: true
        reset:
          enabled: true
        runtime:
          enabled: true
        spinlocks:
          enabled: true
          spinlocks: 8191
        synic:
          enabled: true
        synictimer:
          direct:
            enabled: true
          enabled: true
        tlbflush:
          enabled: true
        vapic:
          enabled: true
        vpindex:
          enabled: true
      smm:
        enabled: true
    firmware:
      bootloader:
        efi:
          persistent: true
          secureBoot: true
      uuid: c9744c86-c42a-5afa-87b4-a860a02a0d4b
    machine:
      type: pc-q35-rhel9.6.0
    memory:
      guest: 8Gi
      maxGuest: 32Gi
    resources:
      requests:
        memory: 8Gi
  evictionStrategy: None
  networks:
  - name: default
    pod: {}
  terminationGracePeriodSeconds: 3600
  volumes:
  - dataVolume:
      name: windows-11-dv-mig-b9zg
    name: dv-disk
status:
  activePods:
    39c20e88-8c2f-4fd5-a0e8-5dab904727f3: cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com
    69126323-af4b-48b8-b493-d92704b2e222: cnv-qe-11.cnvqe.lab.eng.rdu2.redhat.com
  conditions:
  - lastProbeTime: null
    lastTransitionTime: "2025-06-18T15:37:22Z"
    status: "True"
    type: Ready
  - lastProbeTime: null
    lastTransitionTime: null
    message: All of the VMI's DVs are bound and ready
    reason: AllDVsReady
    status: "True"
    type: DataVolumesReady
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: StorageLiveMigratable
  - lastProbeTime: "2025-06-18T15:35:08Z"
    lastTransitionTime: null
    status: "True"
    type: AgentConnected
  - lastProbeTime: null
    lastTransitionTime: null
    status: "True"
    type: LiveMigratable
  currentCPUTopology:
    cores: 1
    sockets: 2
    threads: 1
  guestOSInfo:
    id: mswindows
    kernelRelease: "22000"
    kernelVersion: "10.0"
    machine: x86_64
    name: Microsoft Windows
    prettyName: Windows 10 Pro
    version: Microsoft Windows 11
    versionId: "11"
  interfaces:
  - infoSource: domain
    ipAddress: 10.131.1.158
    ipAddresses:
    - 10.131.1.158
    - fd02:0:0:4::ac7
    linkState: up
    mac: 0a:58:0a:81:02:60
    name: default
    podInterfaceName: eth0
    queueCount: 1
  launcherContainerImageVersion: registry.redhat.io/container-native-virtualization/virt-launcher-rhel9@sha256:4055a7a075ac87d73c2b6a836ee593861cef2f3df6a15014bc6897f903523470
  machine:
    type: pc-q35-rhel9.6.0
  memory:
    guestAtBoot: 8Gi
    guestCurrent: 8Gi
    guestRequested: 8Gi
  migrationMethod: BlockMigration
  migrationState:
    completed: true
    endTimestamp: "2025-06-18T15:38:05Z"
    failed: true
    failureReason: 'Live migration failed error encountered during MigrateToURI3 libvirt
      api call: virError(Code=8, Domain=10, Message=''invalid argument: NBD URI must
      be supplied when migration URI uses UNIX transport method'')'
    migrationConfiguration:
      allowAutoConverge: false
      allowPostCopy: false
      allowWorkloadDisruption: false
      bandwidthPerMigration: "0"
      completionTimeoutPerGiB: 150
      nodeDrainTaintKey: kubevirt.io/drain
      parallelMigrationsPerCluster: 5
      parallelOutboundMigrationsPerNode: 2
      progressTimeout: 150
      unsafeMigrationOverride: false
    migrationUid: 74d6b99f-817b-4b8b-be0e-b5664a22db33
    mode: PreCopy
    sourceNode: cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com
    sourcePersistentStatePVCName: persistent-state-for-windows-11-vm-1750260600-0055554-mj22h
    sourcePod: virt-launcher-windows-11-vm-1750260600-0055554-jxz9n
    startTimestamp: "2025-06-18T15:38:05Z"
    targetDirectMigrationNodePorts:
      "36533": 49152
      "41461": 0
      "46195": 49153
    targetNode: cnv-qe-11.cnvqe.lab.eng.rdu2.redhat.com
    targetNodeAddress: 10.128.2.44
    targetPersistentStatePVCName: persistent-state-for-windows-11-vm-1750260600-0055554-25w2z
    targetPod: virt-launcher-windows-11-vm-1750260600-0055554-2jw7h
  migrationTransport: Unix
  nodeName: cnv-qe-10.cnvqe.lab.eng.rdu2.redhat.com
  phase: Running
  phaseTransitionTimestamps:
  - phase: Pending
    phaseTransitionTimestamp: "2025-06-18T15:30:01Z"
  - phase: Scheduling
    phaseTransitionTimestamp: "2025-06-18T15:30:01Z"
  - phase: Scheduled
    phaseTransitionTimestamp: "2025-06-18T15:34:43Z"
  - phase: Running
    phaseTransitionTimestamp: "2025-06-18T15:34:50Z"
  qosClass: Burstable
  runtimeUser: 107
  selinuxContext: system_u:object_r:container_file_t:s0:c196,c417
  topologyHints:
    tscFrequency: 2095077000
  virtualMachineRevisionName: revision-start-vm-222b33d6-4129-49bd-af8c-7f0af9338db0-2
  volumeStatus:
  - name: dv-disk
    persistentVolumeClaimInfo:
      accessModes:
      - ReadWriteMany
      capacity:
        storage: 70Gi
      claimName: windows-11-dv-mig-b9zg
      filesystemOverhead: "0"
      requests:
        storage: "75161927680"
      volumeMode: Block
    target: vda
  - name: persistent-state-for-windows-11-vm-1750260600-0055554-mj22h
    persistentVolumeClaimInfo:
      accessModes:
      - ReadWriteOnce
      claimName: persistent-state-for-windows-11-vm-1750260600-0055554-mj22h
    target: ""