Create the encryption key with random
sudo dd if=/dev/random of=/media/usb_with_keys/macbookpro.key bs=1 count=32 sudo zfs create timemachine/jason/macbookpro
-o mountpoint=/mnt/timemachine/jason/macbookpro
-o compression=on
-o quota=1T
-o encryption=aes-256-gcm
-o keyformat=raw
-o keylocation=file:///media/usb_with_keys/macbookpro.key