Yep, my Rockies (production & dev) run over a VM, actually just missing disks passthrough on the production VM (having that should provide smart capabilities too).
It’s the first time I read about SeLinux issues over Rockstor, maybe related to Parallel way to have VMs?!? Don’t know, but happy to hear we have a new Mac guy ( Check this one → Simple AFP Setting Request - #12 by sfranzen , we need Mac testers & coders 
)
Mirko