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  1. OpenShift Virtualization
  2. CNV-77645

[SCMIG] Migration fails with Migration name longer than 63 characters

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: Critical Critical
    • CNV v4.21.z
    • CNV v4.21.0
    • Storage Platform
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    • Quality / Stability / Reliability
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      Storage migrations from block disks with fractional sizes fail on some storage provider combinations such as ODF->hostpath provisioner.

      *Workaround:*
      One is able to directly use the kubevirt storage migration APIs to migrate to a custom created PVC, larger than the original's capacity:
      https://kubevirt.io/user-guide/storage/volume_migration/
      Show
      Storage migrations from block disks with fractional sizes fail on some storage provider combinations such as ODF->hostpath provisioner. *Workaround:* One is able to directly use the kubevirt storage migration APIs to migrate to a custom created PVC, larger than the original's capacity: https://kubevirt.io/user-guide/storage/volume_migration/
    • Known Issue
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    • CNV Storage Sprint 283
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      Description of problem:

      Created multi-ns Plan and Migration with long names + namespace name is very long - VirtualMachineStorageMigration is stuck in BeginLiveMigration phase.

$ oc logs -n openshift-cnv kubevirt-migration-controller-68d7d479c5-b4pk5 | grep ERROR

2026-01-22T09:06:58Z    ERROR    Reconciler error    {"controller": "kubevirt-storage-migration-controller", "object": {"name":"storage-mig-plan-rn27-storage-migration-test-storage-class-migration","namespace":"storage-migration-test-storage-class-migration"}, "namespace": "storage-migration-test-storage-class-migration", "name": "storage-mig-plan-rn27-storage-migration-test-storage-class-migration", "reconcileID": "ac2a9309-a937-423f-873e-a738e426d035", "error": "DataVolume.cdi.kubevirt.io \"fedora-1769072383-34219-mig-mt7k\" is invalid: metadata.labels: Invalid value: \"storage-mig-plan-rn27-storage-migration-test-storage-class-migration\": must be no more than 63 characters"}

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

      4.21.0

      How reproducible:

      Alwyas

      Steps to Reproduce:

      $ oc get MultiNamespaceVirtualMachineStorageMigrationPlan -A
NAMESPACE                                        NAME                    AGE
storage-migration-test-storage-class-migration   storage-mig-plan-rn27   4m48s

$ oc get MultiNamespaceVirtualMachineStorageMigration -A
NAMESPACE                                        NAME                              PLAN                    PHASE   AGE
storage-migration-test-storage-class-migration   migration-storage-mig-plan-rn27   storage-mig-plan-rn27           5m30s
      Migration is stuck in BeginLiveMigration phase:
      $ oc get VirtualMachineStorageMigration -A
NAMESPACE                                        NAME                                                                   PLAN                                                                   PHASE                AGE
storage-migration-test-storage-class-migration   storage-mig-plan-rn27-storage-migration-test-storage-class-migration   storage-mig-plan-rn27-storage-migration-test-storage-class-migration   BeginLiveMigration   6m7s

      Actual results:

      Migration stuck in BeginLiveMigration

      Expected results:

      Migration succeeds
(and error propagation to the resource would be nice)

      Additional info:

       

              akalenyu Alex Kalenyuk
              jpeimer@redhat.com Jenia Peimer
              Jenia Peimer Jenia Peimer
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                Created:
                Updated: