Troubleshooting: Velero restores Longhorn PersistentVolumeClaim stuck in the Pending state when using the Velero CSI Plugin version before v0.4.0

| December 15, 2022

Applicable versions

All Longhorn versions.


PersistentVolumeClaim is stuck in the Pending state when restoring Longhorn with Velero with Velero CSI Plugin version before v0.4.0.


For Longhorn versions using longhornio/csi-provisioner:v2.1.2, when it processes a PVC to provision the volume, Longhorn CSI provisioner will only recognize the annotation which will be tagged together with to each PVC via Kubernetes after determining the storage provisioner. The PVC with these annotations will be backed up together via Velero.

After restoring the PVC via Velero with its CSI plugin (< 0.4), it will only remove the but keep the annotation intact from the PVC, because the plugin doesn’t respect the general available annotation. Because Kubernetes will not add to the PVC which already has the beta annotation, it will cause the restoring PVC will be failed to be processed by the built-in Longhorn CSI provisioner and be stuck in the Pending state.

This compatibility issue is caused by the Velero CSI plugin and it has been fixed in the following versions, so since the 0.4 version, all annotations will be respected to ensure the corresponding volume provision is correct.


It is recommended to use the Velero CSI plugin version >= 0.4 for PVC backup and restore because it is compatible with different storage-provisioner annotations supported by different versions of CSI Provisioner.

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