protected void stopPlugin() {
log.info("stop jifs");
try {
FileSystemService fSS = InitialNaming.lookup(FileSystemService.NAME);
final DeviceManager dm = DeviceUtils.getDeviceManager();
VirtualDevice dev = (VirtualDevice) dm.getDevice(JIFileSystemType.VIRTUAL_DEVICE_NAME);
fSS.unregisterFileSystem(dev);
log.info("jifs unmounted");
dm.unregister(dev);
log.info("jifs unregistered");
} catch (NameNotFoundException e) {