Deletion of zfspv-snapshot stucked when cloned-pvc is not in bound state (i.e. pendig state)

[w3aman]

Description

Created the clone from the snapshot of zfspv. But this cloned-pvc is in pending state due to volumeBinding mode is set as waitForFirstConsumer.
Now if we try to delete snapshot while clone-pvc is in pending this deletion task gets stuck. Not able to delete the snapshot.

Expected Behavior

Snapshot deletion should not stuck when pvc is in pending state.

Current Behavior

Snapshot deletion is failing only when clone-pvc is in pending state. when clone-pvc is bound and we try to delete the snapshot , that is working fine. Able to delete the snapshot CR

[pawanpraka1]

This is expected behavior. If volume is being created from snapshot, the snapshot deletiog will fail.
Here, because of waitforfirstconsumer the pvc is in pending state and it will be bound only when there is an application running. So we can not delete the snapshot utill pvc bound operation completes.

https://github.com/kubernetes-csi/external-snapshotter/blob/aafeee9c56d35288a3ee27deefe07659f589b34e/pkg/common-controller/snapshot_controller.go#L805