Chapter 5. Volume snapshots for single node OpenShift

Procedure

1. Save the following YAML to a file with a name such as odf-lvm-vol-snapshot.yaml to create a policy for volume snapshot.

   # Sample YAML to create a volume snapshot
   
   apiVersion: snapshot.storage.k8s.io/v1
   kind: VolumeSnapshot
   metadata:
       name: lvm-block-1-snap
    spec:
        volumeSnapshotClassName: odf-lvm-vg1
        source:
           persistentVolumeClaimName: lvm-block-1

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2. Create the policy by running the following command:

   # oc create -f odf-lvm-vol-snapshot.yaml -ns lvm-policy-ns

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   A read only copy of the PVC is created as a volume snapshot.

Procedure

1. Identify the storage class name of the source PVC and volume snapshot name.

2. Save the following YAML to a file with a name such as odf-lvm-vol-restore.yaml to restore the snapshot.

   # Sample YAML to restore a PVC.
   
   kind: PersistentVolumeClaim
   apiVersion: v1
   metadata:
     name: lvm-block-1-restore
   spec:
     accessModes:
    - ReadWriteOnce
     volumeMode: Block
     Resources:
       Requests:
         storage: 2Gi
     storageClassName: odf-lvm-vg1
     dataSource:
       name: lvm-block-1-snap
       kind: VolumeSnapshot
       apiGroup: snapshot.storage.k8s.io

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3. Create the policy by running the following command:

   # oc create -f odf-lvm-vol-restore.yaml -ns lvm-policy-ns

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