### Generic Ephemeral Volumes

/enhancements/issues/121), which enables PersistentVolumes to be created with locally attached disks, and not just network volumes.

On the Persistent Volumes side, this release [Prevents deletion of Persistent Volume Claims that are used by a pod](https://github.com/kubernetes/enhancements/issues/498) and [Persistent Volumes that are bound to a Persistent Volume Claim](https://github.com/kubernetes/enhancements/issues/499), making it impossible to delete storage that is in use by a pod....

*   [alpha] Raw block volumes
    *   Support for surfacing volumes as raw block devices added to Kubernetes storage system.
    *   Only Fibre Channel volume plugin supports exposes this functionality, in this release.
*   [alpha] Volume resizing
    *   Added file system resizing for the following volume plugins: GCE PD, Ceph RBD, AWS EBS, OpenStack Cinder

- Add e2e test to node expand volume with secret ([#115451](https://github.com/kubernetes/kubernetes/pull/115451), [@zhucan](https://github.com/zhucan)) [SIG Storage and Testing]

* [stable] You can now customize the iSCSI initiator name per volume in the iSCSI volume plugin.

* [stable] You can now specify the World Wide Identifier (WWID) for the volume identifier in the Fibre Channel volume plugin.

* [beta] Reclaim policy in StorageClass

  * You can now configure the reclaim policy in StorageClass, instead of defaulting to `delete` for dynamically provisioned volumes.

* [alpha] Volume resizing

With Kubernetes v1.12, SIG Storage also introduced alpha support for [volume snapshotting](https://github.com/kubernetes/enhancements/issues/177). This feature introduces the ability to create/delete volume snapshots and create new volumes from a snapshot using the Kubernetes API.

  `kubelet_container_log_filesystem_used_bytes`
  `kubelet_volume_stats_capacity_bytes`
  `kubelet_volume_stats_available_bytes`
  `kubelet_volume_stats_used_bytes`
  `kubelet_volume_stats_inodes`
  `kubelet_volume_stats_inodes_free`
  `kubelet_volume_stats_inodes_used`
  `plugin_manager_total_plugins`
  `volume_manager_total_volumes`

- Fixed FibreChannel volume plugin corrupting filesystems on detach of multipath volumes. ([#97013](https://github.com/kubernetes/kubernetes/pull/97013), [@jsafrane](https://github.com/jsafrane)) [SIG Storage]

  and removed `--short` flag entirely. ([#116720](https://github.com/kubernetes/kubernetes/pull/116720), [@soltysh](https://github.com/soltysh))
- Kube-controller-manager deprecate `--volume-host-cidr-denylist` and `--volume-host-allow-local-loopback` flags. ([#118128](https://github.com/kubernetes/kubernetes/pull/118128), [@carlory](https://github.com/carlory)) [SIG API Machinery, Apps, Network, Node, Storage and Testing]

New alpha features include:
* Online volume resizing will increase the filesystem size of a resized volume without requiring a Pod restart.
* AWS EBS and GCE PD volumes support increased limits on the maximum number of attached volumes per node.