Setting up a SAMBA or NFS server on Android

Does anybody know how to get Volumio to see one?

I’ve tried Samba Filesharing, Sambadroid and Servers Ultimate to no avail.

The Samba servers could be seen by Windows, but not by Volumio. The NFS server I tried to set up with Servers Ultimate wouldn’t be found by Volumio either.

I am rooted.