nouser_xattr Disables Extended User Attributes.
acl Enables POSIX Access Control Lists support.
noacl (*) Disables POSIX Access Control Lists support.
-resv_level=2 (*) Set how agressive allocation reservations will be.
+resv_level=2 (*) Set how aggressive allocation reservations will be.
Valid values are between 0 (reservations off) to 8
(maximum space for reservations).
dir_resv_level= (*) By default, directory reservations will scale with file