// +optional
  optional ScaleIOVolumeSource scaleIO = 25;

  // storageOS represents a StorageOS volume attached and mounted on Kubernetes nodes.
  // +optional
  optional StorageOSVolumeSource storageos = 27;

  // csi (Container Storage Interface) represents ephemeral storage that is handled by certain external CSI drivers (Beta feature).
  // +optional
  optional CSIVolumeSource csi = 28;

  - [Important Security Information](#important-security-information-1)
    - [CVE-2023-5528: Insufficient input sanitization in in-tree storage plugin leads to privilege escalation on Windows nodes](#cve-2023-5528-insufficient-input-sanitization-in-in-tree-storage-plugin-leads-to-privilege-escalation-on-windows-nodes)
  - [Changes by Kind](#changes-by-kind-5)
    - [API Change](#api-change)
    - [Feature](#feature-5)

- Set device stage path whenever available for expansion during mount ([#115346](https://github.com/kubernetes/kubernetes/pull/115346), [@gnufied](https://github.com/gnufied)) [SIG Storage and Testing]

- GlusterFS in-tree storage driver which was deprecated at kubernetes 1.25 release has been removed entirely in 1.26. ([#112015](https://github.com/kubernetes/kubernetes/pull/112015), [@humblec](https://github.com/humblec)) [SIG API Machinery, Cloud Provider, Instrumentation, Node, Scalability, Storage and Testing]

### Promoted Local Ephemeral Storage Capacity Isolation to Stable

### SIG Storage

[SIG Storage][] is responsible for storage and volume plugin components.

For the 1.8 release, SIG Storage extended the Kubernetes storage API. In addition to providing simple
volume availability, the API now enables volume resizing and snapshotting. These features are in alpha.
The SIG also focused on providing more control over storage: the ability to set requests and

### Storage Capacity and Volume Expansion Are Generally Available

[Storage capacity tracking](https://github.com/kubernetes/enhancements/issues/1472)
supports exposing currently available storage capacity via [CSIStorageCapacity objects](https://kubernetes.io/docs/concepts/storage/storage-capacity/#api)
and enhances scheduling of pods that use CSI volumes with late binding.

- Kube-apiserver: fixes a 1.27+ regression in watch stability by serving watch requests without a resourceVersion from the watch cache by default, as in <1.27 (disabling the change in #115096 by default). This mitigates the impact of an etcd watch bug (https://github.com/etcd-io/etcd/pull/17555). If the 1.27 change in #115096 to serve these requests from underlying storage is still desired despite the impact on watch stability,...

    /** The key of the configuration. e.g. plugin */
    String ONLINE_HELP_NAME_PLUGIN = "online.help.name.plugin";

    /** The key of the configuration. e.g. storage */
    String ONLINE_HELP_NAME_STORAGE = "online.help.name.storage";

    /** The key of the configuration. e.g. ja */
    String ONLINE_HELP_SUPPORTED_LANGS = "online.help.supported.langs";

of a <a href="#Function_declarations">function declaration</a>
or <a href="#Function_literals">function literal</a> reserves
storage for a named variable.

Calling the built-in function <a href="#Allocation"><code>new</code></a>
or taking the address of a <a href="#Composite_literals">composite literal</a>
allocates storage for a variable at run time.
Such an anonymous variable is referred to via a (possibly implicit)