for i, disk := range disks {
			if disk == nil {
				done <- false
				continue
			}
			if !disk.IsOnline() {
				done <- false
				continue
			}
			wg.Add(1)
			go func(i int, disk StorageAPI) {
				defer wg.Done()

				var (
					fi  FileInfo
					rfi RawFileInfo
					err error
				)

				if opts.VersionID != "" {
					// Read a specific version ID

		return nil
	}

	for _, disk := range driveMetrics.storageInfo.Disks {
		labels := []string{
			driveL, disk.DrivePath,
			poolIndexL, strconv.Itoa(disk.PoolIndex),
			setIndexL, strconv.Itoa(disk.SetIndex),
			driveIndexL, strconv.Itoa(disk.DiskIndex),
		}

		m.setDriveBasicMetrics(disk, labels)
		if dm, found := driveMetrics.ioStats[disk.DrivePath]; found {
			m.setDriveIOStatMetrics(dm, labels)

	var uploadIDs []string
	var disk StorageAPI
	disks := er.getOnlineLocalDisks()
	if len(disks) == 0 {
		// using er.getOnlineLocalDisks() has one side-affect where
		// on a pooled setup all disks are remote, add a fallback
		disks = er.getOnlineDisks()
	}
	for _, disk = range disks {
		if disk == nil {
			continue
		}
		if !disk.IsOnline() {
			continue
		}

	IsOnline() bool

	// Returns the last time this disk (re)-connected
	LastConn() time.Time

	// Indicates if disk is local or not.
	IsLocal() bool

	// Returns hostname if disk is remote.
	Hostname() string

	// Returns the entire endpoint.
	Endpoint() Endpoint

	// Close the disk, mark it purposefully closed, only implemented for remote disks.
	Close() error

	// Returns the unique 'uuid' of this disk.

		m.ByDisk = make(map[string]madmin.DiskMetric)
		aggr := madmin.DiskMetric{
			CollectedAt: time.Now(),
		}
		for name, disk := range collectLocalDisksMetrics(opts.disks) {
			m.ByDisk[name] = disk
			aggr.Merge(&disk)
		}
		m.Aggregated.Disk = &aggr
	}

	if types.Contains(madmin.MetricsScanner) {
		metrics := globalScannerMetrics.report()
		m.Aggregated.Scanner = &metrics
	}

var errDiskFull = StorageErr("drive path full")

// errDiskNotDir - cannot use storage disk if its not a directory
var errDiskNotDir = StorageErr("drive is not directory or mountpoint")

// errDiskNotFound - cannot find the underlying configured disk anymore.
var errDiskNotFound = StorageErr("drive not found")

// errDiskOngoingReq - indicates if the disk has an on-going request in progress.

  -
	- 'https://server-example-pool1:9000/mnt/disk{1...4}/'
	- 'https://server{1...2}-pool1:9000/mnt/disk{1...4}/'
	- 'https://server3-pool1:9000/mnt/disk{1...4}/'
	- 'https://server4-pool1:9000/mnt/disk{1...4}/'
  -
	- 'https://server-example-pool2:9000/mnt/disk{1...4}/'
	- 'https://server{1...2}-pool2:9000/mnt/disk{1...4}/'
	- 'https://server3-pool2:9000/mnt/disk{1...4}/'
	- 'https://server4-pool2:9000/mnt/disk{1...4}/'

...

	if err != nil {
		return r, err
	}

	// Compute disk usage percentage
	si := z.StorageInfo(ctx, true)
	diskStats := make([]struct {
		AvailableSpace uint64
		TotalSpace     uint64
	}, len(z.serverPools))
	for _, disk := range si.Disks {
		// Ignore invalid.
		if disk.PoolIndex < 0 || len(diskStats) <= disk.PoolIndex {
			// https://github.com/minio/minio/issues/16500
			continue
		}

	return len(buf), nil
}

// Returns streaming bitrot reader implementation.
func newStreamingBitrotReader(disk StorageAPI, data []byte, volume, filePath string, tillOffset int64, algo BitrotAlgorithm, shardSize int64) *streamingBitrotReader {
	h := algo.New()
	return &streamingBitrotReader{
		disk:       disk,
		data:       data,
		volume:     volume,
		filePath:   filePath,

		if len(disks) < er.setDriveCount/2 {
			return fmt.Errorf("not enough drives (found=%d, healing=%d, total=%d) are available to heal `%s`", len(disks), healing, er.setDriveCount, tracker.disk.String())
		}

		rand.Shuffle(len(disks), func(i, j int) {
			disks[i], disks[j] = disks[j], disks[i]
		})

		expectedDisks := len(disks)/2 + 1
		fallbackDisks := disks[expectedDisks:]
		disks = disks[:expectedDisks]