return "", err
	}
	if len(refs) == 0 {
		return "", fmt.Errorf("directory %s is not mounted", mountPath)
	}
	basemountPath := mount.NormalizeWindowsPath(pluginMountDir)
	for _, ref := range refs {
		if strings.Contains(ref, basemountPath) {
			volumeID, err := filepath.Rel(mount.NormalizeWindowsPath(basemountPath), ref)
			if err != nil {
				klog.Errorf("Failed to get volume id from mount %s - %v", mountPath, err)
				return "", err
			}