how does geli interact with ZFS?

[Michal]

Hello,

I'm using root ZFS on geli encrypted partition (with /boot on UFS usb 
dongle). Does adding this extra layer between ZFS and disk can get me 
into troubles in case of a system crash?
I mean, does it affects zfs's robustness and features like 
Copy-On-Write, checksumming or anything else? Or it can only get as bad 
as with plain ZFS and geom_eli has nothing to do with that.

Michal
-- 
"It is only when they go wrong that machines remind you how powerful 
they are." -Clive James