https://github.com/zfsonlinux/zfs/issues/8762
https://docs.oracle.com/cd/E37838_01/html/E61017/gkkih.html
https://wiki.archlinux.org/index.php/ZFS#Native_encryption
https://docs.oracle.com/cd/E36784_01/html/E36835/gkkuc.html#scrolltoc

zfs create tank01/test1 -o encryption=on -o  keyformat=passphrase

man zfs

encryption=on  keyformat=raw|hex|passphrase keylocation=prompt|file://</absolute/file/path>