Networked filesystems are simply broken. They are never going to be supported. If by luck you come across a network filesystem that is broken in a way that does not affect calibre, good for you. If not, then you are out of luck.
Networked filesystems are simply broken. They are never going to be supported. If by luck you come across a network filesystem that is broken in a way that does not affect calibre, good for you. If not, then you are out of luck.