globalScannerMetrics.setCycle(&cycleInfo)

			bgHealInfo := readBackgroundHealInfo(ctx, objAPI)
			scanMode := getCycleScanMode(cycleInfo.current, bgHealInfo.BitrotStartCycle, bgHealInfo.BitrotStartTime)
			if bgHealInfo.CurrentScanMode != scanMode {
				newHealInfo := bgHealInfo
				newHealInfo.CurrentScanMode = scanMode
				if scanMode == madmin.HealDeepScan {
					newHealInfo.BitrotStartTime = time.Now().UTC()

			var result healEntryResult
			fivs, err := entry.fileInfoVersions(bucket)
			if err != nil {
				res, err := er.HealObject(ctx, bucket, encodedEntryName, "",
					madmin.HealOpts{
						ScanMode: scanMode,
						Remove:   healDeleteDangling,
					})
				if err != nil {
					if isErrObjectNotFound(err) || isErrVersionNotFound(err) {
						// queueing happens across namespace, ignore

			if err := healEntry(bucket, entry, scanMode); err != nil {
				cancel()
			}
		},
		partial: func(entries metaCacheEntries, _ []error) {
			entry, ok := entries.resolve(&resolver)
			if !ok {
				// check if we can get one entry at least
				// proceed to heal nonetheless.
				entry, _ = entries.firstFound()
			}

			if err := healEntry(bucket, *entry, scanMode); err != nil {
				cancel()
				return
			}

		bucket:    source.bucket,
		object:    source.object,
		versionID: source.versionID,
		opts:      h.settings,
	}
	if source.opts != nil {
		task.opts = *source.opts
	} else {
		task.opts.ScanMode = madmin.HealNormalScan
	}

	h.countScanned(healType)

	if source.noWait {
		select {
		case globalBackgroundHealRoutine.tasks <- task:
			if serverDebugLog {

//     a not-found error or a hash-mismatch error.
func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetadata []FileInfo,
	errs []error, latestMeta FileInfo, filterByETag bool, bucket, object string,
	scanMode madmin.HealScanMode,
) (availableDisks []StorageAPI, dataErrsByDisk map[int][]int, dataErrsByPart map[int][]int) {
	availableDisks = make([]StorageAPI, len(onlineDisks))

func (client *storageRESTClient) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, _ func() bool) (dataUsageCache, error) {
	defer xioutil.SafeClose(updates)

	st, err := storageNSScannerRPC.Call(ctx, client.gridConn, &nsScannerOptions{
		DiskID:   *client.diskID.Load(),
		ScanMode: int(scanMode),
		Cache:    &cache,
	})
	if err != nil {
		return cache, toStorageErr(err)
	}

// HealObjectFn closure function heals the object.
type HealObjectFn func(bucket, object, versionID string, scanMode madmin.HealScanMode) error

func (z *erasureServerPools) HealObjects(ctx context.Context, bucket, prefix string, opts madmin.HealOpts, healObjectFn HealObjectFn) error {
	healEntry := func(bucket string, entry metaCacheEntry, scanMode madmin.HealScanMode) error {
		if entry.isDir() {
			return nil
		}

	NewNSLock(bucket string, objects ...string) RWLocker

	// Storage operations.
	Shutdown(context.Context) error
	NSScanner(ctx context.Context, updates chan<- DataUsageInfo, wantCycle uint32, scanMode madmin.HealScanMode) error
	BackendInfo() madmin.BackendInfo
	Legacy() bool // Only returns true for deployments which use CRCMOD as its object distribution algorithm.
	StorageInfo(ctx context.Context, metrics bool) StorageInfo

}

func (p *xlStorageDiskIDCheck) Healing() *healingTracker {
	return p.storage.Healing()
}

func (p *xlStorageDiskIDCheck) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, _ func() bool) (dataUsageCache, error) {
	if contextCanceled(ctx) {
		xioutil.SafeClose(updates)
		return dataUsageCache{}, ctx.Err()
	}

	if err := p.checkDiskStale(); err != nil {

		buf, _, err := s.readMetadataWithDMTime(ctx, itemPath)
		return buf, err
	})
}

func (s *xlStorage) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, weSleep func() bool) (dataUsageCache, error) {
	atomic.AddInt32(&s.scanning, 1)
	defer atomic.AddInt32(&s.scanning, -1)

	var err error