}

			// ensure data file is created
			dataDir := filepath.Dir(mounter.GetPath())
			dataFile := filepath.Join(dataDir, volDataFileName)
			if _, err := os.Stat(dataFile); err != nil {
				if os.IsNotExist(err) {
					t.Errorf("data file not created %s", dataFile)
				} else {
					t.Fatal(err)
				}
			}
			data, err := loadVolumeData(dataDir, volDataFileName)
			if err != nil {