Hello & welcome to the forum,

What driver are talking about ? I don't see any Volume Snapshot Class defined here.

Can you share your YAML definitions as well ?

Let me know.

@Flo_csI Thanks for the response!

Here is the VolumeSnapshotClass, the driver being - csi-vxflexos.dellemc.com

- apiVersion: snapshot.storage.k8s.io/v1alpha1
  kind: VolumeSnapshotClass
  metadata:
    annotations:
      k10.kasten.io/is-snapshot-class: "true"
    creationTimestamp: "2020-06-30T14:31:32Z"
    generation: 1
    name: vxflexos-snapclass
    resourceVersion: <>
    selfLink: /apis/snapshot.storage.k8s.io/v1alpha1/volumesnapshotclasses/vxflexos-snapclass
    uid: <>
  snapshotter: csi-vxflexos.dellemc.com

I've also created a PR with my proposed changes- https://github.com/dell/csi-vxflexos/pull/11

Let me know if there are any other details you'd like.

Additionally I wanted to mention that we are using the "pre-provisioning volume snapshots" workflow -

VolumeSnapshotSpec has a required Source field. Source may be either a PersistentVolumeClaimName (if dynamically provisioning a snapshot) or VolumeSnapshotContentName (if pre-provisioning a snapshot).
VolumeSnapshotContentSpec has a required Source field. This Source may be either a VolumeHandle (if dynamically provisioning a snapshot) or a SnapshotHandle (if pre-provisioning volume snapshots).

source (https://kubernetes-csi.github.io/docs/snapshot-restore-feature.html)

This works as expected in the Isilon CSI driver (since ListSnapshots is not implemented) -  https://github.com/dell/csi-isilon/blob/d59d971be81a6f461a4e8836d6f73cfab632b150/service/controller.go#L670

@Flo_csI Any update on this issue?