}
}

func getClusterRepLinkOnlineMD() MetricDescription {
	return MetricDescription{
		Namespace: clusterMetricNamespace,
		Subsystem: replicationSubsystem,
		Name:      linkOnline,
		Help:      "Reports whether replication link is online (1) or offline(0)",
		Type:      gaugeMetric,
	}
}

func getClusterRepLinkCurrOfflineDurationMD() MetricDescription {
	return MetricDescription{

	if wantID == "" {
		return nil
	}
	id, err := p.storage.GetDiskID()
	if err != nil {
		return err
	}
	if id != wantID {
		return fmt.Errorf("disk ID %s does not match. disk reports %s", wantID, id)
	}
	return nil
}

// diskHealthCheckOK will check if the provided error is nil
// and update disk status if good.
// For convenience a bool is returned to indicate any error state

	derrs := make([]error, len(poolIndices))
	dobjects := make([]ObjectInfo, len(poolIndices))

	// Delete concurrently in all server pools that reported no error or read quorum error
	// where the read quorum issue is from metadata inconsistency.
	var wg sync.WaitGroup
	for idx, pe := range poolIndices {

func newBucketMeasurement(initTime time.Time) *bucketMeasurement {
	return &bucketMeasurement{
		startTime: initTime,
	}
}

// incrementBytes add bytes reported for a bucket.
func (m *bucketMeasurement) incrementBytes(bytes uint64) {
	atomic.AddUint64(&m.bytesSinceLastWindow, bytes)
}

// updateExponentialMovingAverage processes the measurements captured so far.

type MonitoredReader struct {
	r        io.Reader
	throttle *bucketThrottle
	ctx      context.Context // request context
	lastErr  error           // last error reported, if this non-nil all reads will fail.
	m        *Monitor
	opts     *MonitorReaderOptions
}

// BucketOptions represents the bucket and optionally its replication target pair.
type BucketOptions struct {

		// only at bucket level instead.
		VersionSuspended: globalBucketVersioningSys.Suspended(bucket),
	})
	if err != nil && !isErrVersionNotFound(err) { // VersionNotFound would be reported by pool that object version is missing on.
		sendEvent(eventArgs{
			BucketName: bucket,
			Object: ObjectInfo{
				Bucket:       bucket,
				Name:         dobj.ObjectName,
				VersionID:    versionID,

		return hh
	default:
		logger.CriticalIf(GlobalContext, errors.New("Unsupported bitrot algorithm"))
		return nil
	}
}

// Available reports whether the given algorithm is available.
func (a BitrotAlgorithm) Available() bool {
	_, ok := bitrotAlgorithms[a]
	return ok
}

// String returns the string identifier for a given bitrot algorithm.

	}

	// Dealing with error returns from close() - 'man 2 close'
	//
	// A careful programmer will check the return value of close(), since it is quite possible that
	// errors on a previous write(2) operation are reported only on the final close() that releases
	// the open file descriptor.
	//
	// Failing to check the return value when closing a file may lead to silent loss of data.

		peersLogOnceIf(ctx, err, sys.peerClients[index].host.String())
	}
	reports = append(reports, globalBucketMonitor.GetReport(bandwidth.SelectBuckets(buckets...)))
	consolidatedReport := bandwidth.BucketBandwidthReport{
		BucketStats: make(map[bandwidth.BucketOptions]bandwidth.Details),
	}
	for _, report := range reports {
		if report == nil || report.BucketStats == nil {
			continue
		}

	"strings"
	"time"
)

type scanStatus uint8

const (
	scanStateNone scanStatus = iota
	scanStateStarted
	scanStateSuccess
	scanStateError

	// Time in which the initiator of a scan must have reported back.
	metacacheMaxRunningAge = time.Minute

	// Max time between client calls before dropping an async cache listing.
	metacacheMaxClientWait = 3 * time.Minute