`rootfs`: `[volume=] [,acl=<1|0>] [,quota=<1|0>] [,ro=<1|0>] [,size=]` `mp[n]`: `[volume=] ,mp= [,acl=<1|0>] [,backup=<1|0>] [,quota=<1|0>] [,ro=<1|0>] [,size=]` `acl`: `boolean` :: Explicitly enable or disable ACL support. `backup`: `boolean` :: Whether to include the mountpoint in backups. `mp`: `` :: Path to the mountpoint as seen from inside the container. `quota`: `boolean` :: Enable user quotas inside the container (not supported with zfs subvolumes) `ro`: `boolean` :: Read-only mountpoint (not supported with bind mounts) `size`: `` :: Volume size (read only value). `volume`: `` :: Volume, device or directory to mount into the container.