2. if there's a transient error happened during "provisioning/deletion", i.e., a volume is still in-use while a deleteVolume has been called, original `storage_operation_duration_seconds` will NOT wait until a volume has been finally deleted before reporting an inaccurate latency metric. The newly implemented metric `volume_operation_total_seconds`, however, waits until...

* K8s now supports rbd-nbd for Ceph rbd volume mounts. ([#58916](https://github.com/kubernetes/kubernetes/pull/58916), [@ianchakeres](https://github.com/ianchakeres))