Chapter 3. Provisioning storage using Logical Volume Manager Operator

Procedure

1. Identify the StorageClass that is created when Red Hat OpenShift Data Foundation Logical Volume Manager Operator is deployed.

   The StorageClass name is in the format, odf-lvm-<device-class-name>. device-class-name is the name of the device class that you provided in the LVMCluster of the policy YAML. For example, if the deviceClass has the name as vg1, then the storageClass name is odf-lvm-vg1.

2. Save the following YAML to a file with a name such as odf-lvm-storage-class.yaml to create a PVC where the application requires storage.

   # Sample YAML to create a PVC
   # block pvc
   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: lvm-block-1
     namespace: default
   spec:
     accessModes:
       - ReadWriteOnce
     volumeMode: Block
     resources:
       requests:
         storage: 10Gi
     storageClassName: odf-lvm-vg1
   ---
   # file pvc
   apiVersion: v1
   kind: PersistentVolumeClaim
   metadata:
     name: lvm-file-1
     namespace: default
   spec:
     accessModes:
       - ReadWriteOnce
     volumeMode: Filesystem
     resources:
       requests:
         storage: 10Gi
     storageClassName: odf-lvm-vg1

3. Create the policy by running the following command:

   # oc create -f odf-lvm-storage-class.yaml -ns lvm-policy-ns

   The PVCs that are created will remain in pending state until you deploy the pods that use them.