odd problems with zfs when installing latest stable snapshot

Hello fs@,

I had to replace the boot/os disk on a 13-stable machine, so grabbed the
latest snapshot from 23rd Nov and installed via usb key memstick img.

Selected the guided zfs option, which seemed to go ok but did not result
in a bootable system. There are 2x SSDs in the machine, so selected the
options for 4k (think it was sector size), encrypt swap & fs, striped,
32gb swap size, and selected both of the disks.

The first thing is it made 2* 32GB swap partitions (one on each SSD, 
so 64GB total) and not 2* 16GB partitions as expected, on each of the SSDs.
It's not a problem per se, it's just unexpected, because I thought the
32g value would be the total and not per disk.

The second thing is that it wasn't directly bootable. I had to wait till it got
past the bios screen and then plug in the usb stick again, and then the
prompt for the geli password came up. So I'm guessing the bootcode isn't
present on the new install SSDs.

I understand there's a new way of zfs booting now, but can't find
exactly how. Are there newer instructions somewhere on how to fix this?

tia,
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