* available for all platforms and configurations. If that implementation is unavailable, this
   * method falls back to {@code getStackTrace}. Callers that require the special implementation can
   * check its availability with {@link #lazyStackTraceIsLazy()}.
   *
   * <p>The expected (but not guaranteed) performance of the special implementation differs from

   * available for all platforms and configurations. If that implementation is unavailable, this
   * method falls back to {@code getStackTrace}. Callers that require the special implementation can
   * check its availability with {@link #lazyStackTraceIsLazy()}.
   *
   * <p>The expected (but not guaranteed) performance of the special implementation differs from

        {
          "datasource": {
            "type": "prometheus",
            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "minio_node_drive_errors_availability{job=~\"$scrape_jobs\",server=\"$server\"}",
          "interval": "",
          "legendFormat": "[{{drive}}]",
          "refId": "B"
        }
      ],
      "title": "Drive Errors",

// name displayed in logs and trace to be accurate. The name is extracted via
// reflection.
//
// When no flags are passed, gzip compression, http tracing of headers and
// checking of object layer availability are all enabled. Use flags to modify
// this behavior.
func adminMiddleware(f http.HandlerFunc, flags ...hFlag) http.HandlerFunc {
	// Collect all flags with bitwise-OR and assign operator
	var handlerFlags hFlag

	// 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

                  set will be used only if the pools with priority can't be used.
                  If multiple matching IPAddressPools are available it will check
                  for the availability of IPs sorting the matching IPAddressPools
                  by priority, starting from the highest to the lowest. If multiple
                  IPAddressPools have the same priority, choice will be random.

- Graduated pod scheduling gates to general availability.
  The `PodSchedulingReadiness` feature gate no longer has any effect, and the

     *
     * * **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.
     *

| `minio_node_drive_errors_ioerror`      | Total number of drive I/O errors since server start                 |
| `minio_node_drive_errors_availability` | Total number of drive I/O errors, timeouts since server start       |
| `minio_node_drive_io_waiting`          | Total number I/O operations waiting on drive                        |

	}
}

func getNodeDriveAvailabilityErrorsMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: driveSubsystem,
		Name:      "errors_availability",
		Help:      "Total number of drive I/O errors, timeouts since server start",
		Type:      counterMetric,
	}
}

func getNodeDriveWaitingIOMD() MetricDescription {
	return MetricDescription{