I have updated the required changes based on the above comment. section 3.2.1.1.3. Registering a Storage Class https://access.redhat.com/documentation/en-us/red_hat_openshift_container_storage/3.11/html/operations_guide/chap-documentation-red_hat_gluster_storage_container_native_with_openshift_platform-openshift_creating_persistent_volumes?lb_target=stage#chap-Documentation-Red_Hat_Gluster_Storage_Container_Native_with_OpenShift_Platform-OpenShift_Creating_Persistent_Volumes-Dynamic_Prov