Description of problem:
From manila share end user in OCP, it's just a manila NFS back end, but not show fsType as ext4(can be set to others like xfs by sc) in pv output which seems confusing as below.

Version-Release number of selected component (if applicable):
[wduan@MINT manila]$ oc get clusterversion
NAME      VERSION                             AVAILABLE   PROGRESSING   SINCE   STATUS
version   4.5.0-0.nightly-2020-05-24-104524   True        False         42h     Cluster version is 4.5.0-0.nightly-2020-05-24-104524

How reproducible:
Always

Steps to Reproduce:
1. Install csi-driver-manila-driver
2. create pvc with manila sc
3. oc get pv -o yaml

Actual results:
pv contain info like spec.csi.fsType: ext4

Expected results:
fsType should not be displayed here


Master Log:

Node Log (of failed PODs):

PV Dump:
[wduan@MINT manila]$ oc get pv
NAME                                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                     STORAGECLASS      REASON   AGE
pvc-9b9c9047-a1c0-4d15-90ff-96a57fdb9b57   1Gi        RWX            Delete           Bound    manila-csi/mypvc-manila   csi-manila-ceph            2m30s

[wduan@MINT manila]$ oc get pv pvc-9b9c9047-a1c0-4d15-90ff-96a57fdb9b57 -o yaml
apiVersion: v1
kind: PersistentVolume
metadata:
  annotations:
    pv.kubernetes.io/provisioned-by: manila.csi.openstack.org
  creationTimestamp: "2020-05-26T10:05:19Z"
  finalizers:
  - kubernetes.io/pv-protection
  name: pvc-9b9c9047-a1c0-4d15-90ff-96a57fdb9b57
  resourceVersion: "883590"
  selfLink: /api/v1/persistentvolumes/pvc-9b9c9047-a1c0-4d15-90ff-96a57fdb9b57
  uid: 007b7a67-cef1-4305-ac76-61a99808d75c
spec:
  accessModes:
  - ReadWriteMany
  capacity:
    storage: 1Gi
  claimRef:
    apiVersion: v1
    kind: PersistentVolumeClaim
    name: mypvc-manila
    namespace: manila-csi
    resourceVersion: "883563"
    uid: 9b9c9047-a1c0-4d15-90ff-96a57fdb9b57
  csi:
    driver: manila.csi.openstack.org
    fsType: ext4
    nodePublishSecretRef:
      name: csi-manila-secrets
      namespace: manila-csi
    nodeStageSecretRef:
      name: csi-manila-secrets
      namespace: manila-csi
    volumeAttributes:
      cephfs-mounter: fuse
      shareAccessID: 71c21611-2602-4719-95e6-2cced82d9aac
      shareID: 35739e9e-2c0a-49ab-80c9-ae2a0a31d9fc
      storage.kubernetes.io/csiProvisionerIdentity: 1590487024997-8081-manila.csi.openstack.org
    volumeHandle: 35739e9e-2c0a-49ab-80c9-ae2a0a31d9fc
  persistentVolumeReclaimPolicy: Delete
  storageClassName: csi-manila-ceph
  volumeMode: Filesystem
status:
  phase: Bound

  
PVC Dump:
[wduan@MINT manila]$ oc get pvc -o yaml
apiVersion: v1
items:
- apiVersion: v1
  kind: PersistentVolumeClaim
  metadata:
    annotations:
      pv.kubernetes.io/bind-completed: "yes"
      pv.kubernetes.io/bound-by-controller: "yes"
      volume.beta.kubernetes.io/storage-provisioner: manila.csi.openstack.org
    creationTimestamp: "2020-05-26T10:05:14Z"
    finalizers:
    - kubernetes.io/pvc-protection
    name: mypvc-manila
    namespace: manila-csi
    resourceVersion: "883593"
    selfLink: /api/v1/namespaces/manila-csi/persistentvolumeclaims/mypvc-manila
    uid: 9b9c9047-a1c0-4d15-90ff-96a57fdb9b57
  spec:
    accessModes:
    - ReadWriteMany
    resources:
      requests:
        storage: 1Gi
    storageClassName: csi-manila-ceph
    volumeMode: Filesystem
    volumeName: pvc-9b9c9047-a1c0-4d15-90ff-96a57fdb9b57
  status:
    accessModes:
    - ReadWriteMany
    capacity:
      storage: 1Gi
    phase: Bound
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

StorageClass Dump (if StorageClass used by PV/PVC):
[wduan@MINT manila]$ oc get sc csi-manila-ceph -o yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  creationTimestamp: "2020-05-26T09:56:42Z"
  name: csi-manila-ceph
  resourceVersion: "880318"
  selfLink: /apis/storage.k8s.io/v1/storageclasses/csi-manila-ceph
  uid: 679d85ed-8c7c-4bc4-8e3e-e3dc17fb186b
parameters:
  csi.storage.k8s.io/node-publish-secret-name: csi-manila-secrets
  csi.storage.k8s.io/node-publish-secret-namespace: manila-csi
  csi.storage.k8s.io/node-stage-secret-name: csi-manila-secrets
  csi.storage.k8s.io/node-stage-secret-namespace: manila-csi
  csi.storage.k8s.io/provisioner-secret-name: csi-manila-secrets
  csi.storage.k8s.io/provisioner-secret-namespace: manila-csi
  type: ceph
provisioner: manila.csi.openstack.org
reclaimPolicy: Delete
volumeBindingMode: Immediate

Additional info: