dch 
Toby Bryans@dch yes, I did it just this week. No blog yet but will pull together what I did later (am using Bastille so it will be based on that)
@tobybryans awesome! Looking forwards to it. I’m interested in having a clean build with zfs rollback each time, did you go that far?
@dch I've pulled this together; apologies for the formatting, we're working on our website right now and will be adding a proper blog when we migrate to the new site (the URL will change then, I'll follow up here when it does)!
Do let me know if I've got anything wrong or can improve it in any way, this was from memory, but I think it covers everything I had to do!
@tobybryans awesome! Might be tomorrow before I get a chance to try this but thank-you!