Hello,

We have K10 6.5 running with CSI storage provided by Dell Isilon CSI drivers.

We have 4 storageClasses with this driver (csi-isilon.dellemc.com), each using different Isilon clusters and path.

To match this, we have 4 VolumeSnapshotClasses with the same driver, but with different parameters.

Using the Snapshot option from K8s (Openshift) is working ok.

Kasten is not using the correct VolumeSnapShotClass for snpashotting the PersistentVolumes created on each storageClass.

Here I provide 2 storageClasses and VolumeSnapshotClasses :

StorageClass “isilon-infra”

allowVolumeExpansion: true
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  annotations:
    k10.kasten.io/revalidated-at: '{"Status":"Failed","LastUpdateTime":"2024-01-16T16:11:47Z","Errors":,"Failed
      to validate the storage class within the time period."]}'
  creationTimestamp: "2024-01-16T13:46:33Z"
  labels:
    vs.ch/dellcsi: vrai
  name: isilon-infra
  resourceVersion: "1207671684"
  uid: 7337136e-7f93-4bf5-ba94-9d888b517a17
mountOptions:
- nfsvers=3
parameters:
  AccessZone: infra-a
  AzServiceIP: itcm-fss01.infra.vs.ch
  ClusterName: itcm-fs
  IsiPath: /ifs/data/infra/csi/ocs
  IsiVolumePathPermissions: "777"
  RootClientEnabled: "true"
provisioner: csi-isilon.dellemc.com
reclaimPolicy: Delete
volumeBindingMode: Immediate

StorageClass “isilon-police” :

allowVolumeExpansion: true
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  creationTimestamp: "2024-01-16T13:46:34Z"
  labels:
    vs.ch/dellcsi: vrai
  name: isilon-police
  resourceVersion: "1207563012"
  uid: 84588d55-924d-40c9-bb79-4393941454f9
mountOptions:
- nfsvers=3
parameters:
  AccessZone: police-b
  AzServiceIP: itcp-fss02.infrapol.vs.ch
  ClusterName: itcp-fs
  IsiPath: /ifs/data/police/csi/ocs
  IsiVolumePathPermissions: "777"
  RootClientEnabled: "true"
provisioner: csi-isilon.dellemc.com
reclaimPolicy: Delete
volumeBindingMode: Immediate

volumesnapshotclass isilon-infra :

apiVersion: snapshot.storage.k8s.io/v1
deletionPolicy: Delete
driver: csi-isilon.dellemc.com
kind: VolumeSnapshotClass
metadata:
  annotations:
    k10.kasten.io/is-snapshot-class: "true"
  creationTimestamp: "2024-01-16T14:40:37Z"
  generation: 1
  labels:
    vs.ch/dellcsi: vrai
  name: isilon-infra
  resourceVersion: "1207602354"
  uid: f7fee19c-cbd4-4507-b874-f8ead77c0de5
parameters:
  IsiPath: /ifs/data/infra/csi/ocs

volumesnapshotclass isilon-police :

apiVersion: snapshot.storage.k8s.io/v1
deletionPolicy: Delete
driver: csi-isilon.dellemc.com
kind: VolumeSnapshotClass
metadata:
  annotations:
    k10.kasten.io/is-snapshot-class: "true"
  creationTimestamp: "2024-01-16T14:40:38Z"
  generation: 1
  labels:
    vs.ch/dellcsi: vrai
  name: isilon-police
  resourceVersion: "1207602367"
  uid: fcd70a77-3404-4edc-a43d-3dc6846a5041
parameters:
  IsiPath: /ifs/data/police/csi/ocs

As you can see, the IsiPath are different to make it work. However K10 is not using the correct one :

When taking a snapshot from a PV created on storageClass “isilon-police”, K10 is using the wrong VolumeSnapshotClass “isilon-infra”, which fails

oc get volumeSnapshot k10-csi-snap-4fpz6wlgj584nrps
NAME                            READYTOUSE   SOURCEPVC   SOURCESNAPSHOTCONTENT   RESTORESIZE   SNAPSHOTCLASS   SNAPSHOTCONTENT                                    CREATIONTIME   AGE
k10-csi-snap-4fpz6wlgj584nrps   false        pol01                                             isilon-infra    snapcontent-60c97427-2c19-464d-98b8-67b0bb4123be                  35m

We can clearly see that K10 is using the wrong VolumeSnapshotClass “isilon-infra” to snapshot a PV from storageClass “isilon-police”.

Is there any way to link StorageClasses to VolumeSnapshotClasses ?