}

	// Update size...
	binary.BigEndian.PutUint32(dst[dataOffset-4:dataOffset], uint32(len(dst)-dataOffset))

	// Add CRC of metadata as fixed size (5 bytes)
	// Prior to v1.3 this was variable sized.
	tmp = tmp[:5]
	tmp[0] = 0xce // muint32
	binary.BigEndian.PutUint32(tmp[1:], uint32(xxhash.Sum64(dst[dataOffset:])))
	dst = append(dst, tmp[:5]...)
	return append(dst, x.data...), nil
}

	totalWrites           atomic.Uint64
	totalDeletes          atomic.Uint64
	totalErrsAvailability atomic.Uint64 // Captures all data availability errors such as faulty disk, timeout errors.
	totalErrsTimeout      atomic.Uint64 // Captures all timeout only errors

	// apiCalls should be placed first so alignment is guaranteed for atomic operations.
	apiCalls     [storageMetricLast]uint64

func reduceCommonVersions(diskVersions [][]byte, writeQuorum int) (versions []byte) {
	diskVersionsCount := make(map[uint64]int)
	for _, versions := range diskVersions {
		if len(versions) > 0 {
			diskVersionsCount[binary.BigEndian.Uint64(versions)]++
		}
	}

	var commonVersions uint64
	max := 0
	for versions, count := range diskVersionsCount {
		if max < count {
			max = count
			commonVersions = versions

	debug bool
}

type sizeSummary struct {
	totalSize       int64
	versions        uint64
	deleteMarkers   uint64
	replicatedSize  int64
	replicatedCount int64
	pendingSize     int64
	failedSize      int64
	replicaSize     int64
	replicaCount    int64
	pendingCount    uint64
	failedCount     uint64
	replTargetStats map[string]replTargetSizeSummary
	tiers           map[string]tierStats
}

// If versioned the latest version will be returned.
func (e *metaCacheEntry) fileInfo(bucket string) (FileInfo, error) {
	if e.isDir() {
		return FileInfo{
			Volume: bucket,
			Name:   e.name,
			Mode:   uint32(os.ModeDir),
		}, nil
	}
	if e.cached != nil {
		if len(e.cached.versions) == 0 {
			// This special case is needed to handle xlMeta.versions == 0
			return FileInfo{
				Volume:   bucket,

// Updates are sent on a regular basis and the caller *must* consume them.
func (er erasureObjects) nsScanner(ctx context.Context, buckets []BucketInfo, wantCycle uint32, updates chan<- dataUsageCache, healScanMode madmin.HealScanMode) error {
	if len(buckets) == 0 {
		return nil
	}

	// Collect disks we can use.
	disks, healing := er.getOnlineDisksWithHealing(false)

	// Locking operations on object.
	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.

				} else {
					write([]byte{0})
				}
				xioutil.SafeClose(doneCh)
				return
			case block := <-blockCh:
				var tmp [5]byte
				tmp[0] = 2
				binary.LittleEndian.PutUint32(tmp[1:], uint32(len(block)))
				write(tmp[:])
				write(block)
				if canWrite {
					w.(http.Flusher).Flush()
				}
			}
		}
	}()
	return &h
}

var poolBuf8k = sync.Pool{

			Code:       AdminUpdateUnexpectedFailure,
			Message:    err.Error(),
			StatusCode: http.StatusInternalServerError,
		}
	}
	return resp.Body, nil
}

var updateInProgress atomic.Uint32

// Function to get the reader from an architecture
func downloadBinary(u *url.URL, mode string) (binCompressed []byte, bin []byte, err error) {
	transport := getUpdateTransport(30 * time.Second)

// chance the file doesn't exist yet.
var (
	randN  uint32
	randmu sync.Mutex
)

// Temp files created in default Tmp dir
var globalTestTmpDir = os.TempDir()

// reseed - returns a new seed every time the function is called.
func reseed() uint32 {
	return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}