if err != nil {
			if debugPrint {
				fmt.Printf("grid: Unable to upgrade: %v. http.ResponseWriter is type %T\n", err, w)
			}
			w.WriteHeader(http.StatusUpgradeRequired)
			return
		}
		// will write an OpConnectResponse message to the remote and log it once locally.
		writeErr := func(err error) {
			if err == nil {
				return
			}
			gridLogOnceIf(ctx, err, err.Error())
			resp := connectResp{

| `minio_node_drive_writes_per_sec`    | Writes per second on a drive.                            |
| `minio_node_drive_writes_kb_per_sec` | Kilobytes written per second on a drive.                 |
| `minio_node_drive_writes_await`      | Average time for write requests to be served on a drive. |

	if !corruptedMultipart {
		var writer io.Writer
		var err error
		if noFilename {
			writer, err = w.CreateFormField("file")
		} else {
			writer, err = w.CreateFormFile("file", "upload.txt")
		}
		if err != nil {
			// return nil, err
			return nil, err
		}
		writer.Write(objData)
		// Close before creating the new request.
		w.Close()
	}

	var funcReturned bool
	var funcReturnedMu sync.Mutex
	defer func() {
		funcReturnedMu.Lock()
		funcReturned = true
		funcReturnedMu.Unlock()
	}()
	// Write listing to results and saver.
	go func() {
		var returned bool
		for entry := range inCh {
			if !returned {
				funcReturnedMu.Lock()
				returned = funcReturned
				funcReturnedMu.Unlock()

	ctxt.ConnReadDeadline = ctx.Duration("conn-read-deadline")
	ctxt.ConnWriteDeadline = ctx.Duration("conn-write-deadline")
	ctxt.ConnClientReadDeadline = ctx.Duration("conn-client-read-deadline")
	ctxt.ConnClientWriteDeadline = ctx.Duration("conn-client-write-deadline")
	ctxt.SendBufSize = ctx.Int("send-buf-size")
	ctxt.RecvBufSize = ctx.Int("recv-buf-size")

	totalInodes    MetricName = "total_inodes"
	readsPerSec    MetricName = "reads_per_sec"
	writesPerSec   MetricName = "writes_per_sec"
	readsKBPerSec  MetricName = "reads_kb_per_sec"
	writesKBPerSec MetricName = "writes_kb_per_sec"
	readsAwait     MetricName = "reads_await"
	writesAwait    MetricName = "writes_await"
	percUtil       MetricName = "perc_util"
	usedInodes     MetricName = "used_inodes"

	// network stats

		Volume:         volume,
		FilePath:       path,
		ForceDelMarker: forceDelMarker,
		FI:             fi,
		Opts:           opts,
	})
	return toStorageErr(err)
}

// WriteAll - write all data to a file.
func (client *storageRESTClient) WriteAll(ctx context.Context, volume string, path string, b []byte) error {
	_, err := storageWriteAllRPC.Call(ctx, client.gridConn, &WriteAllHandlerParams{

	mimeXML mimeType = "application/xml"
)

// writeSuccessResponseJSON writes success headers and response if any,
// with content-type set to `application/json`.
func writeSuccessResponseJSON(w http.ResponseWriter, response []byte) {
	writeResponse(w, http.StatusOK, response, mimeJSON)
}

// writeSuccessResponseXML writes success headers and response if any,
// with content-type set to `application/xml`.

		// if IAM format
		return err
	}

	if iamFmt.Version >= iamFormatVersion1 {
		// Nothing to do.
		return nil
	}

	bootstrapTraceMsg("Write IAM format file")
	// Save iam format to version 1.
	return store.saveIAMConfig(ctx, newIAMFormatVersion1(), path)
}

func getGroupInfoPath(group string) string {

		mac := hmac.New(sha256.New, extKey)
		mac.Write(sealedKey.IV[:])
		mac.Write([]byte(domain))
		mac.Write([]byte(SealAlgorithm))
		mac.Write([]byte(path.Join(bucket, object))) // use path.Join for canonical 'bucket/object'
		unsealConfig = sio.Config{MinVersion: sio.Version20, Key: mac.Sum(nil), CipherSuites: fips.DARECiphers()}
	case InsecureSealAlgorithm:
		sha := sha256.New()
		sha.Write(extKey)
		sha.Write(sealedKey.IV[:])