globalServiceFreezeCnt++
	if globalServiceFreezeCnt == 1 {
		globalServiceFreeze.Store(make(chan struct{}))
	}
	globalServiceFreezeMu.Unlock()
}

// unfreezeServices will unfreeze all incoming S3 API calls.
// For each call, unfreezeServices must be called once.
func unfreezeServices() {
	// We need a lock since we need the 2 atomic values to remain in sync.
	globalServiceFreezeMu.Lock()
	// Close when we reach 0
	globalServiceFreezeCnt--

			bootstrapTrace("go startSFTPServer", func() {
				go startSFTPServer(globalServerCtxt.SFTP)
			})
		}
	}()

	go func() {
		if globalEnableSyncBoot {
			defer bootstrapTrace("unfreezeServices", unfreezeServices)
			t := time.AfterFunc(5*time.Minute, func() {
				warnings = append(warnings,

	}

	// Reply to the client before restarting, stopping MinIO server.
	writeSuccessResponseHeadersOnly(w)

	switch serviceSig {
	case serviceFreeze:
		freezeServices()
	case serviceUnFreeze:
		unfreezeServices()
	case serviceRestart, serviceStop:
		globalServiceSignalCh <- serviceSig
	}
}

type servicePeerResult struct {
	Host          string                        `json:"host"`

		ng.Go(GlobalContext, func() error {
			return client.SignalService(serviceSig, "", false, nil)
		}, idx, *client.host)
	}
	nerrs := ng.Wait()
	if freeze {
		freezeServices()
	} else {
		unfreezeServices()
	}
	return nerrs
}

// Netperf - perform mesh style network throughput test
func (sys *NotificationSys) Netperf(ctx context.Context, duration time.Duration) []madmin.NetperfNodeResult {

			}
			return np, grid.NewRemoteErrString(string(buf))
		}
		if !dryRun {
			globalServiceSignalCh <- signal
		}
	case serviceFreeze:
		freezeServices()
	case serviceUnFreeze:
		unfreezeServices()
	case serviceReloadDynamic:
		objAPI := newObjectLayerFn()
		if objAPI == nil {
			return np, grid.NewRemoteErr(errServerNotInitialized)
		}
		srvCfg, err := getValidConfig(objAPI)
		if err != nil {