Are there other storage drivers than AUFS?

Ideally I would like to use my openzfs (o3x) partition for storage with the zfs storage driver.
Other potential candidates are welcome.

Least ideal how do I move it from ~/Library to a place of my choice?

The storage currently has to be on the Linux virtual machine, there is no way to use an OSX partition directly.

Ok. Is there a way to not use aufs? We have not been able to get any useful results with that in the past. It will crash (containers just vanish without a trace) and it is too slow to have any practical value (a 30m job takes 2.5h).