## 1. Overview

The SMB Witness Protocol enables rapid notification of resource changes in a clustered file server environment. It provides fast failover capabilities by allowing clients to register for notifications about server node availability, share movement, and other critical cluster events.

## 2. Protocol Specification Reference

- **MS-SWN**: Service Witness Protocol Specification
- **MS-SMB2 Section 3.2.4.24**: FSCTL_SRV_REQUEST_RESUME_KEY

| `minio_system_drive_availability_errors_total` | Total availability errors (I/O errors, timeouts) on a drive. <br><br>Type: counter      | `drive`, `set_index`, `drive_index`, `pool_index`, `server`        |

    - [PID Limits graduates to General Availability](#pid-limits-graduates-to-general-availability)
    - [API Priority and Fairness graduates to Beta](#api-priority-and-fairness-graduates-to-beta)
    - [IPv4/IPv6 run](#ipv4ipv6-run)
    - [go1.15.5](#go1155)
    - [CSI Volume Snapshot graduates to General Availability](#csi-volume-snapshot-graduates-to-general-availability)

    - [Node Binaries](#node-binaries-17)
- [Changes](#changes)
  - [What’s New (Major Themes)](#whats-new-major-themes)
    - [Cloud Provider Labels reach General Availability](#cloud-provider-labels-reach-general-availability)
    - [Volume Snapshot Moves to Beta](#volume-snapshot-moves-to-beta)
    - [CSI Migration Beta](#csi-migration-beta)
  - [Known Issues](#known-issues)

	// to IPv6 address ie minio will start listening on IPv6 address whereas another
	// (non-)minio process is listening on IPv4 of given port.
	// To avoid this error situation we check for port availability.
	logger.FatalIf(xhttp.CheckPortAvailability(globalMinioHost, globalMinioPort, globalTCPOptions), "Unable to start the server")
}

func initAllSubsystems(ctx context.Context) {
	// Initialize notification peer targets

- kube-controller-manager currently needs a writable `--cert-dir` (default is `/var/run/kubernetes`) for generating self-signed certificates, when no `--tls-cert-file` or `--tls-private-key-file` are provided.

    ```

### Timeouts ([.kt][ConfigureTimeoutsKotlin], [.java][ConfigureTimeoutsJava])

Use timeouts to fail a call when its peer is unreachable. Network partitions can be due to client connectivity problems, server availability problems, or anything between. OkHttp supports connect, write, read, and full call timeouts.

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client: OkHttpClient = OkHttpClient.Builder()

                    return false;
                }
            }

            return true;
        } catch (Exception e) {
            System.err.println("Docker availability check failed: " + e.getMessage());
            return false;
        }
    }

     *
     * * **Unreachable IP addresses.** If the URL's host has multiple IP addresses,
     *   failure to reach any individual IP address doesn't fail the overall request. This can
     *   increase availability of multi-homed services.
     *
     * * **Stale pooled connections.** The [ConnectionPool] reuses sockets
     *   to decrease request latency, but these connections will occasionally time out.
     *

automate deployment and rolling updates of applications, specified
declaratively. It handles versioning, multiple simultaneous rollouts,
aggregating status across all pods, maintaining application availability, and
rollback.
  * <strong>Automated cluster management: </strong>
     * Kubernetes clusters can now span zones within a cloud provider. Pods from a