Restore VolumeSnapshot

Restoring a VolumeSnapshot means creating a PVC while specifying the dataSource field referencing to the target snapshot.

Precaution

• The new PVC must have the same access mode as the VolumeSnapshot.
• The new PVC must have the same storage value as the VolumeSnapshot.

Procedure

1. Create a YAML config restore.yaml. Specify the field dataSource.name.

   # Source: restore.yaml
   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: example-restore 
   spec:
     storageClassName: iomesh-csi-driver 
     dataSource:
       name: example-snapshot # Specify the VolumeSnapshot.
       kind: VolumeSnapshot
       apiGroup: snapshot.storage.k8s.io
     accessModes:
       - ReadWriteOnce # Must be same as the access mode in the VolumeSnapshot.
     resources:
       requests:
         storage: 6Gi # Must be same as the storage value in the VolumeSnapshot.
   

2. Apply the YAML config to create the PVC.

   kubectl apply -f restore.yaml
   

3. Check the PVC. A PV will be created and bounded to this PVC.

   kubectl get pvc example-restore
   

   If successful, you should see output like this:

   NAME                                        STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS        AGE
   example-restore                             Bound    pvc-54230f3f-47dc-46e8-8c42-38c073c40598   6Gi        RWO            iomesh-csi-driver   21h   
   

4. View the PV. You can find the PV name from the PVC output.

   kubectl get pv pvc-54230f3f-47dc-46e8-8c42-38c073c40598 # The PV name you get in Step 3.
   

   NAME                                       CAPACITY   RECLAIM POLICY   STATUS   CLAIM                 STORAGECLASS
   pvc-54230f3f-47dc-46e8-8c42-38c073c40598   6Gi        Delete           Bound    example-restore       iomesh-csi-driver