where is cifs defined

Adding music to my library works just fine after manually adding it. However, after deleting ‘all user data’ I have to manually add the cifs mounts again.
Looking in the /etc/fstab the music library I added in the GUI is not listed.

Where are the cifs mounts defined (the ones added in the GUI)?
Where can I add my cifs shares so they will always be mounted, also after deleting user data?

thanks in advance?

.Nico

Not answering your question, but have a look at Macmpi’s backup plugin: volumio-plugins-collection-t6251.html