Moving a VM across OpenShift clusters fails if the PVC name is long (>64 chargs). The VMExport on the source does not expose the links of PVCs with long names.

This can make it fails to export disks with very long names and/or that have been restored from snapshot, like restore-xyz ones which are usually long.

4.20.3

Always

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: this-string-has-62-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: lvms-ssd
  volumeMode: Block
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: this-string-has-63-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: lvms-ssd
  volumeMode: Block
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: this-string-has-64-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: lvms-ssd
  volumeMode: Block
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: this-string-has-65-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: lvms-ssd
  volumeMode: Block
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: this-string-has-66-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
  namespace: default
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: lvms-ssd
  volumeMode: Block

Only the PVCs with names up to 64 chars are exported. 65 and 66 are missing.

# oc get vmexport rhel9-export -o yaml | yq '.status.links.external.volumes[].name'
this-string-has-62-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
this-string-has-63-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
this-string-has-64-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

All 5 PVCs linked.

Its just the linking on the VMExport that fails. The Pod is ready and exporting them.

Its failing here:
https://github.com/kubevirt/kubevirt/blob/dd7fcccabbe3b19c68616a950ab43c6b573d9248/pkg/storage/export/export/export.go#L262

Controller logs:

{"component":"virt-controller","level":"warning","msg":"Volume this-string-has-65-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx not found in paths","pos":"links.go:108","timestamp":"2026-01-30T00:59:30.777231Z"}
{"component":"virt-controller","level":"warning","msg":"Volume this-string-has-66-characters-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx not found in paths","pos":"links.go:108","timestamp":"2026-01-30T00:59:30.777241Z"}