lastSuccess int64

	// atomic time of last time a token was grabbed.
	lastStarted int64

	// Atomic status of disk.
	status atomic.Int32

	// Atomic number indicates if a disk is hung
	waiting atomic.Int32
}

// newDiskHealthTracker creates a new disk health tracker.
func newDiskHealthTracker() *diskHealthTracker {
	d := diskHealthTracker{
		lastSuccess: time.Now().UnixNano(),

// The disk ID will be validated against the loaded one.
func loadHealingTracker(ctx context.Context, disk StorageAPI) (*healingTracker, error) {
	if disk == nil {
		return nil, errors.New("loadHealingTracker: nil drive given")
	}
	diskID, err := disk.GetDiskID()
	if err != nil {
		return nil, err
	}
	b, err := disk.ReadAll(ctx, minioMetaBucket,

		for j := 0; j < s.setDriveCount; j++ {
			disk := s.erasureDisks[i][j]
			if disk == OfflineDisk {
				continue
			}
			if !disk.IsOnline() {
				continue
			}
			diskMap[disk.Endpoint()] = disk
		}
	}
	return diskMap
}

// Initializes a new StorageAPI from the endpoint argument, returns
// StorageAPI and also `format` which exists on the disk.

func (er erasureObjects) cleanupDeletedObjects(ctx context.Context) {
	var wg sync.WaitGroup
	for _, disk := range er.getLocalDisks() {
		if disk == nil {
			continue
		}
		wg.Add(1)
		go func(disk StorageAPI) {
			defer wg.Done()
			drivePath := disk.Endpoint().Path
			readDirFn(pathJoin(drivePath, minioMetaTmpDeletedBucket), func(ddir string, typ os.FileMode) error {

	GetDiskID() (string, error)

	// Set a unique 'uuid' for this disk, only used when
	// disk is replaced and formatted.
	SetDiskID(id string)

	// Returns healing information for a newly replaced disk,
	// returns 'nil' once healing is complete or if the disk
	// has never been replaced.
	Healing() *healingTracker
	DiskInfo(ctx context.Context, opts DiskInfoOptions) (info DiskInfo, err error)

func GetTotalUsableCapacityFree(diskInfo []madmin.Disk, s StorageInfo) (capacity uint64) {
	for _, disk := range diskInfo {
		// Ignore invalid.
		if disk.PoolIndex < 0 || len(s.Backend.StandardSCData) <= disk.PoolIndex {
			// https://github.com/minio/minio/issues/16500
			continue
		}
		// Ignore parity disks
		if disk.DiskIndex < s.Backend.StandardSCData[disk.PoolIndex] {
			capacity += disk.AvailableSpace
		}
	}
	return capacity

		Version string `json:"version"` // Version of 'xl' format.
		Disk    string `json:"drive"`   // Disk field carries assigned disk uuid.
		// JBOD field carries the input disk order generated the first
		// time when fresh disks were supplied.
		JBOD []string `json:"jbod"`
	} `json:"xl"` // Erasure field holds xl format.
}

// Represents the V2 backend disk structure version
// under `.minio.sys` and actual data namespace.

			var wg sync.WaitGroup
			// Remove versions in bulk for each disk
			for index, disk := range storageDisks {
				if disk == nil {
					continue
				}
				wg.Add(1)
				go func(index int, disk StorageAPI) {
					defer wg.Done()
					_ = disk.Delete(ctx, bucket, object, DeleteOptions{
						Recursive: false,
						Immediate: false,
					})
				}(index, disk)
			}
			wg.Wait()
		}
	}

			} else {
				dataErrsByPart[p][i] = verifyResp.Results[p]
			}
		}
	}

	// Build dataErrs by disk from dataErrs by part
	for part, disks := range dataErrsByPart {
		for disk := range disks {
			dataErrsByDisk[disk][part] = dataErrsByPart[part][disk]
		}
	}
	return dataErrsByDisk, dataErrsByPart

		}

		// Get the checksums of the current part.
		bitrotReaders := make([]io.ReaderAt, len(disks))
		for index, disk := range disks {
			if disk == OfflineDisk {
				continue
			}
			tillOffset := erasure.ShardFileOffset(test.offset, test.length, test.data)

			bitrotReaders[index] = newBitrotReader(disk, nil, "testbucket", "object", tillOffset, writeAlgorithm, bitrotWriterSum(writers[index]), erasure.ShardSize())
		}