ZFSBoot try and bsdlabel bootstrap code

[Randy Bush]

next week, i have to do a system install on a 24tb array which has no
cdrom.  i want to use raidz2.  the new issues to me are
  o install from usb stick
  o installing on a new zfs
  o boot from zfs

i have a couple of systems where i did a small bootable gmirror
partition on the first two drives, and then gave the rest of the drives,
and other whole drives, to zfs.  i could do that this time too, i
guess.  but i wondered if i could do an install which was pure zfs.

i have been collecting email on the subject for six months.  so now i
have some clues and some confusion.  is there a zfs capable loader?

i will be doing this a jet-lagged.  is there a recipe?

randy