volumes to be manually provisioned by a cluster administrator before use. With
this feature, volume plugins that support it (GCE PD, AWS EBS, and Cinder) can
automatically provision a PersistentVolume to bind to an unfulfilled
PersistentVolumeClaim.
  * Run multiple schedulers in parallel, e.g. one or more custom schedulers
alongside the default Kubernetes scheduler, using pod annotations to select

### **Storage**

*   [stable] `PersistentVolume` and `PersistentVolumeClaim` objects must now have a capacity greater than zero.
*   [stable] Mutation of `PersistentVolumeSource` after creation is no longer allowed
*   [alpha] Deletion of `PersistentVolumeClaim` objects that are in use by a pod no longer permitted (if alpha feature is enabled).
*   [alpha] Container Storage Interface

- Migrated the volume attach/detach controller (within `kube-controller-manager`) to use [contextual logging](https://k8s.io/docs/concepts/cluster-administration/system-logs/#contextual-logging).
  Migrated the `PersistentVolumeClaim` protection controller (within `kube-controller-manager`) to use [contextual logging](https://k8s.io/docs/concepts/cluster-administration/system-logs/#contextual-logging).

- Implement a queueing hint for PersistentVolumeClaim/Add event in CSILimit plugin. ([#124703](https://github.com/kubernetes/kubernetes/pull/124703), [@utam0k](https://github.com/utam0k)) [SIG Scheduling and Storage]

  
  ACTION REQUIRED:  If you are using the `RecoverVolumeExpansionFailure` alpha feature gate
  then after upgrading to this release, you need to update some objects.
  For any existing PersistentVolumeClaimss with `status.allocatedResourceStatus` set to either

* PersistentVolume flexVolume sources can now reference secrets in a namespace other than the PersistentVolumeClaim's namespace. ([#56460](https://github.com/kubernetes/kubernetes/pull/56460), [@liggitt](https://github.com/liggitt))

### Windows

* pvc.Spec.Resources.Requests min and max can be enforced with a LimitRange of type "PersistentVolumeClaim" in the namespace ([#30145](https://github.com/kubernetes/kubernetes/pull/30145), [@markturansky](https://github.com/markturansky))

- Fixed a bug where Kubernetes would apply a default StorageClass to a PersistentVolumeClaim,
  even when the deprecated annotation `volume.beta.kubernetes.io/storage-class` was set. ([#116089](https://github.com/kubernetes/kubernetes/pull/116089), [@cvvz](https://github.com/cvvz)) [SIG Apps and Storage]

- Fixed a bug where Kubernetes would apply a default StorageClass to a PersistentVolumeClaim,
  even when the deprecated annotation `volume.beta.kubernetes.io/storage-class` was set. ([#116089](https://github.com/kubernetes/kubernetes/pull/116089), [@cvvz](https://github.com/cvvz)) [SIG Apps and Storage]

- StatefulSet Controller now waits for PersistentVolumeClaim deletion before creating pods. ([#93457](https://github.com/kubernetes/kubernetes/pull/93457), [@ymmt2005](https://github.com/ymmt2005))