The following three properties cannot be changed  after  the
      file  system  is  created, and therefore, should be set when
      the file system is created. If the properties  are  not  set
      with the "zfs create" or "zpool create" commands, these pro-
      perties are inherited from the parent dataset. If the parent
      dataset  lacks  these  properties due to having been created
      prior to these features being supported, the new file system
      will have the default values for these properties.

      casesensitivity = sensitive | insensitive | mixed

	...

      normalization =none | formD | formKCf

	...

      utf8only =on | off