Create VolumeSnapshot

A VolumeSnapshot is a request for snapshot of a volume and similar to a PVC, while a VolumeSnapshotContent is the snapshot taken from a volume provisioned in the cluster.

Prerequisite

Ensure that there is already a SnapshotClass.

Procedure

1. Create a YAML config snapshot.yaml. Specify the SnapshotClass and PVC.

   # Source: snapshot.yaml
   apiVersion: snapshot.storage.k8s.io/v1
   kind: VolumeSnapshot
   metadata:
     name: example-snapshot
   spec:
     volumeSnapshotClassName: iomesh-csi-driver # Specify a SnapshotClass such as `iomesh-csi-driver`.
     source:
       persistentVolumeClaimName: mongodb-data-pvc # Specify the PVC for which you want to take a snapshot such as `mongodb-data-pvc`.
   

2. Apply the YAML config to create a VolumeSnapshot.

   kubectl apply -f snapshot.yaml
   

3. When the VolumeSnapshot is created, the corresponding VolumeSnapshotContent will be created by IOMesh. Run the following command to verify that they were both created.

   kubectl get Volumesnapshots example-snapshot
   

   If successful, you should see output like this:

   NAME               SOURCEPVC            RESTORESIZE    SNAPSHOTCONTENT                                    CREATIONTIME
   example-snapshot   mongodb-data-pvc     6Gi            snapcontent-fb64d696-725b-4f1b-9847-c95e25b68b13   10h