h.mutex.Unlock()

	return nil
}

// healSequenceStart - this is the top-level background heal
// routine. It launches another go-routine that actually traverses
// on-disk data, checks and heals according to the selected
// settings. This go-routine itself, (1) monitors the traversal
// routine for completion, and (2) listens for external stop
// signals. When either event happens, it sets the finish status for

	// dynamic sleeper to avoid thundering herd for trash folder expunge routine
	deleteCleanupSleeper = newDynamicSleeper(5, 25*time.Millisecond, false)

	// dynamic sleeper for multipart expiration routine
	deleteMultipartCleanupSleeper = newDynamicSleeper(5, 25*time.Millisecond, false)

	// Is _MINIO_DISABLE_API_FREEZE_ON_BOOT set?

	}

	var id string
	if id, err = pools.initRebalanceMeta(ctx, buckets); err != nil {
		writeErrorResponseJSON(ctx, w, toAPIError(ctx, err), r.URL)
		return
	}

	// Rebalance routine is run on the first node of any pool participating in rebalance.
	pools.StartRebalance()

	b, err := json.Marshal(struct {
		ID string `json:"id"`
	}{ID: id})
	if err != nil {

)

const (
	processLocksReadTotal           = "locks_read_total"
	processLocksWriteTotal          = "locks_write_total"
	processCPUTotalSeconds          = "cpu_total_seconds"
	processGoRoutineTotal           = "go_routine_total"
	processIORCharBytes             = "io_rchar_bytes"
	processIOReadBytes              = "io_read_bytes"
	processIOWCharBytes             = "io_wchar_bytes"
	processIOWriteBytes             = "io_write_bytes"

	sendLog(ctx, entry)
}

// ErrCritical is the value panic'd whenever CriticalIf is called.
var ErrCritical struct{}

// CriticalIf logs the provided error on the console. It fails the
// current go-routine by causing a `panic(ErrCritical)`.
func CriticalIf(ctx context.Context, err error, errKind ...interface{}) {
	if err != nil {
		LogIf(ctx, "", err, errKind...)
		panic(ErrCritical)
	}
}

		err = errNoSuchGroup
	}
	return err
}

func (ies *IAMEtcdStore) watch(ctx context.Context, keyPath string) <-chan iamWatchEvent {
	ch := make(chan iamWatchEvent)

	// go routine to read events from the etcd watch channel and send them
	// down `ch`
	go func() {
		for {
		outerLoop:
			watchCh := ies.client.Watch(ctx,
				keyPath, etcd.WithPrefix(), etcd.WithKeysOnly())

			for {

				nsMutex:            mutex,
			}
		}(i)
	}

	wg.Wait()

	// start cleanup stale uploads go-routine.
	go s.cleanupStaleUploads(ctx)

	// start cleanup of deleted objects.
	go s.cleanupDeletedObjects(ctx)

	// Start the disk monitoring and connect routine.
	if !globalIsTesting {
		go s.monitorAndConnectEndpoints(ctx, defaultMonitorConnectEndpointInterval)
	}

	return s, nil
}

					continue
				}
			}
		}

		lastBatchProcess = time.Now()

	retry:
		// If the channel reaches above half capacity
		// we spawn more workers. The workers spawned
		// from this main worker routine will exit
		// once the channel drops below half capacity
		// and when it's been at least 30 seconds since
		// we launched a new worker.
		if mainWorker && len(h.logCh) > cap(h.logCh)/2 {

	return client.endpoint.PoolIdx, client.endpoint.SetIdx, client.endpoint.DiskIdx
}

// Wrapper to restClient.Call to handle network errors, in case of network error the connection is disconnected
// and a healthcheck routine gets invoked that would reconnect.
func (client *storageRESTClient) call(ctx context.Context, method string, values url.Values, body io.Reader, length int64) (io.ReadCloser, error) {
	if values == nil {
		values = make(url.Values)

| `cpu_total_seconds`           | `counter` | Total user and system CPU time spent in seconds                                                                | `server` |
| `go_routine_total`            | `gauge`   | Total number of go routines running                                                                            | `server` |