}, idx, *client.host)
	}
	return ng.Wait()
}

var errPeerNotReachable = errors.New("peer is not reachable")

// GetLocks - makes GetLocks RPC call on all peers.
func (sys *NotificationSys) GetLocks(ctx context.Context, r *http.Request) []*PeerLocks {
	locksResp := make([]*PeerLocks, len(sys.peerClients))
	g := errgroup.WithNErrs(len(sys.peerClients))

		if err != nil {
			writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
			return
		}
	}
	stale := r.Form.Get("stale") == "true" // list also stale locks

	peerLocks := globalNotificationSys.GetLocks(ctx, r)

	topLocks := topLockEntries(peerLocks, stale)

	// Marshal API response upto requested count.
	if len(topLocks) > count && count > 0 {
		topLocks = topLocks[:count]
	}

}

// Close - marks the client as closed.
func (client *peerRESTClient) Close() error {
	client.restClient.Close()
	return nil
}

// GetLocks - fetch older locks for a remote node.
func (client *peerRESTClient) GetLocks(ctx context.Context) (lockMap map[string][]lockRequesterInfo, err error) {
	resp, err := getLocksRPC.Call(ctx, client.gridConn(), grid.NewMSS())
	if err != nil || resp == nil {

	if opts.CheckPrecondFn != nil {
		if !opts.NoLock {
			ns := er.NewNSLock(bucket, object)
			lkctx, err := ns.GetLock(ctx, globalOperationTimeout)
			if err != nil {
				return nil, err
			}
			ctx = lkctx.Context()
			defer ns.Unlock(lkctx)
			opts.NoLock = true
		}

		Bucket:    bucket,
		Object:    object,
		VersionID: versionID,
		DiskCount: len(storageDisks),
	}

	if !opts.NoLock {
		lk := er.NewNSLock(bucket, object)
		lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
		if err != nil {
			return result, err
		}
		ctx = lkctx.Context()
		defer lk.Unlock(lkctx)
	}

	// Re-read when we have lock...

	versionSuspended := globalBucketVersioningSys.PrefixSuspended(srcBucket, srcObject)

	lock := api.NewNSLock(r.Bucket, objInfo.Name)
	lkctx, err := lock.GetLock(ctx, globalOperationTimeout)
	if err != nil {
		return err
	}
	ctx = lkctx.Context()
	defer lock.Unlock(lkctx)

	opts := ObjectOptions{
		VersionID:        objInfo.VersionID,

			return err
		}
	}

	// Prevent parallel erasure set healing
	locker := z.NewNSLock(minioMetaBucket, fmt.Sprintf("new-drive-healing/%d/%d", poolIdx, setIdx))
	lkctx, err := locker.GetLock(ctx, newDiskHealingTimeout)
	if err != nil {
		return fmt.Errorf("Healing of drive '%v' on %s pool, belonging to %s erasure set already in progress: %w",
			disk, humanize.Ordinal(poolIdx+1), humanize.Ordinal(setIdx+1), err)

	rebalSaveStoppedAt
)

func (z *erasureServerPools) saveRebalanceStats(ctx context.Context, poolIdx int, opts rebalSaveOpts) error {
	lock := z.serverPools[0].NewNSLock(minioMetaBucket, rebalMetaName)
	lkCtx, err := lock.GetLock(ctx, globalOperationTimeout)
	if err != nil {
		rebalanceLogIf(ctx, fmt.Errorf("failed to acquire write lock on %s/%s: %w", minioMetaBucket, rebalMetaName, err))
		return err
	}
	defer lock.Unlock(lkCtx)

	}

	// Lock the object name before starting replication operation.
	// Use separate lock that doesn't collide with regular objects.
	lk := objectAPI.NewNSLock(bucket, "/[replicate]/"+dobj.ObjectName)
	lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
	if err != nil {
		globalReplicationPool.Get().queueMRFSave(dobj.ToMRFEntry())
		sendEvent(eventArgs{
			BucketName: bucket,
			Object: ObjectInfo{
				Bucket:       bucket,

// The function will block until the context is canceled.
// There should only ever be one scanner running per cluster.
func runDataScanner(ctx context.Context, objAPI ObjectLayer) {
	ctx, cancel := globalLeaderLock.GetLock(ctx)
	defer cancel()

	// Load current bloom cycle
	var cycleInfo currentScannerCycle

	buf, _ := readConfig(ctx, objAPI, dataUsageBloomNamePath)
	if len(buf) == 8 {