I had open-e v6 with latest ver os. I created a FC lun for netbackup dedupe pool. every few day, I cannot login web gui and NAS file sharing did not work. but FC lun was working on Windows 2k8 r2 host.
how can I fix without reboot
You can try to restart the web server from the console, CNTRL+ALT+W, addons.
If this does not work, run the file system repair from the console at CNTRL+ALT+X, file system repair option.
There could be an issue with your boot media where the DSS is installed on if you are not able to access the GUI and shares. Also it could be an IP conflict on the network that is the same as the DSS.