Moving boot/root disk in 9.0

[james]

Now that I've moved to stable and mfi is working, I'd like to stop 
booting off my SATA SSD (and also move ZIL off it) to a RAID1 on the PERC.

I've sliced up the disk etc, but is there a handy procedure I can use to 
move the relevant parts of / to /newboot (where I've currently mounted 
the new boot slice)?

I'm thinking its not a straightforward tar in '/': /data is a ZFS root 
volume and contains a number of volumes for user home areas (mounted 
under /home) and also volumes mounted on /usr/src, /usr/obj and 
/usr/ports.  And then there's /dev too.

Once I've got everything moved I'll disable the ZIL and move over by 
fiddling the BIOS priorities.

James