// This can be empty if driver does not support topology.
  // +optional
  repeated string topologyKeys = 3;

  // allocatable represents the volume resources of a node that are available for scheduling.
  // +optional
  optional VolumeNodeResources allocatable = 4;
}

// CSINodeList is a collection of CSINode objects.
message CSINodeList {
  // Standard list metadata

  // This can be empty if driver does not support topology.
  // +optional
  repeated string topologyKeys = 3;

  // allocatable represents the volume resources of a node that are available for scheduling.
  // This field is beta.
  // +optional
  optional VolumeNodeResources allocatable = 4;
}

// CSINodeList is a collection of CSINode objects.
message CSINodeList {
  // Standard list metadata

    `--cgroups-per-qos=false`.
  * If `kube-reserved` and/or `system-reserved` are specified, node allocatable
    will be enforced on all pods by default. To opt-out set
    `--enforce-node-allocatable=””`
  * Hard Eviction Thresholds will be subtracted from Capacity while calculating
    Node Allocatable. This will result in a reduction of schedulable capacity in

resource-intensive in ‘iptables’ mode.
  * Node stability can be improved by reserving [resources](https://github.com/kubernetes/kubernetes/blob/release-1.2/docs/proposals/node-allocatable.md) for the base operating system using --system-reserved and --kube-reserved Kubelet flags
  * Liveness and readiness probes now support more configuration parameters:
periodSeconds, successThreshold, failureThreshold

- EmptyDir memory backed volumes are sized as the minimum of pod allocatable memory on a host and an optional explicit user provided value. ([#100319](https://github.com/kubernetes/kubernetes/pull/100319), [@derekwaynecarr](https://github.com/derekwaynecarr)) [SIG Node]

  // +optional
  map<string, k8s.io.apimachinery.pkg.api.resource.Quantity> capacity = 1;

  // Allocatable represents the resources of a node that are available for scheduling.
  // Defaults to Capacity.
  // +optional
  map<string, k8s.io.apimachinery.pkg.api.resource.Quantity> allocatable = 2;

  // NodePhase is the recently observed lifecycle phase of the node.

  This allows the scheduler to handle cluster events faster with less memory.
  
  Specific node events include updates to taints, tolerations or allocatable.
  In-tree plugins now ignore node updates that don't modify any of these fields. ([#127220](https://github.com/kubernetes/kubernetes/pull/127220), [@sanposhiho](https://github.com/sanposhiho)) [SIG Node, Scheduling and Storage]

* Make volume usage metrics available for Cinder ([#62668](https://github.com/kubernetes/kubernetes/pull/62668), [@zetaab](https://github.com/zetaab))

  * For alpha, volume resizing supports only Gluster volumes.

* [alpha] Provide capacity isolation and resource management for local ephemeral storage

  * You can now set container requests, container limits, and node allocatable reservations for the new `ephemeral-storage` resource.

  * The `ephemeral-storage` resource includes all the disk space a container might consume with container overlay or scratch.

### SIG Storage

- Fixed CSI volume limits not showing up in node's capacity and allocatable ([#70540](https://github.com/kubernetes/kubernetes/pull/70540), [@gnufied](https://github.com/gnufied))