// if this header is set to "true"
	MinIOStorageClassDefaults = "x-minio-storage-class-defaults"

	// Reports number of drives currently healing
	MinIOHealingDrives = "x-minio-healing-drives"

	// Header indicates if the delete marker should be preserved by client
	MinIOSourceDeleteMarker = "x-minio-source-deletemarker"

	// Header indicates if the delete marker version needs to be purged.

          "hide": false,
          "instant": true,
          "legendFormat": ".",
          "range": false,
          "refId": "B"
        }
      ],
      "title": "Total Online/Offline Drives",
      "type": "gauge"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {

	shuffledPartsMetadata = make([]FileInfo, len(disks))
	distribution := fi.Erasure.Distribution

	var inconsistent int
	for i, meta := range metaArr {
		if disks[i] == nil {
			// Assuming offline drives as inconsistent,
			// to be safe and fallback to original
			// distribution order.
			inconsistent++
			continue
		}
		if !meta.IsValid() {
			inconsistent++
			continue
		}

		if serverDebugLog {
			fmt.Printf("Task in the queue: %#v\n", task)
		}
	case <-h.ctx.Done():
		return nil
	}

	countOKDrives := func(drives []madmin.HealDriveInfo) (count int) {
		for _, drive := range drives {
			if drive.State == madmin.DriveStateOk {
				count++
			}
		}
		return count
	}

	// task queued, now wait for the response.
	select {
	case res := <-task.respCh:

### Remotely Inspecting backend data

	if hr.Before.Drives[0].State != madmin.DriveStateMissing {
		t.Fatalf("Unexpected drive state: %v", hr.Before.Drives[0].State)
	}

	// Check the state of all other disks (should be ok)
	for i, h := range append(hr.Before.Drives[1:], hr.After.Drives...) {
		if h.State != madmin.DriveStateOk {
			t.Fatalf("Unexpected drive state (%d): %v", i+1, h.State)
		}
	}

		echo "my content" | /tmp/mc pipe myminio/testbucket/file-$i
	done
}

function perform_test() {
	start_port=$2

	start_minio_3_node $start_port

	echo "Testing Distributed Erasure setup healing of drives"
	echo "Remove the contents of the disks belonging to '${1}' node"

	rm -rf ${WORK_DIR}/${1}/*/

	set -x
	start_minio_3_node $start_port

	check_heal ${1}
	rv=$?
	if [ "$rv" == "1" ]; then

			if disk == nil || !disk.IsOnline() {
				parityDrives++
				offlineDrives++
				continue
			}
		}

		if offlineDrives >= (len(onlineDisks)+1)/2 {
			// if offline drives are more than 50% of the drives
			// we have no quorum, we shouldn't proceed just
			// fail at that point.
			return nil, toObjectErr(errErasureWriteQuorum, bucket, object)
		}

		if parityDrives >= len(onlineDisks)/2 {

		Subsystem: driveSubsystem,
		Name:      onlineTotal,
		Help:      "Total drives online in this cluster",
		Type:      gaugeMetric,
	}
}

func getClusterDrivesTotalMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: driveSubsystem,
		Name:      total,
		Help:      "Total drives in this cluster",
		Type:      gaugeMetric,
	}
}

	storageDisks, format, err := waitForFormatErasure(true, endpoints, 1, 1, 16, "")
	if err != nil {
		t.Fatalf("Unable to format drives for erasure, %s", err)
	}

	ep := PoolEndpoints{Endpoints: endpoints}

	parity, err := ecDrivesNoConfig(16)
	if err != nil {
		t.Fatalf("Unexpected error during EC drive config: %v", err)
	}
	if _, err := newErasureSets(ctx, ep, storageDisks, format, parity, 0); err != nil {