Solaris ZFS to ZFS LiveUpgrade

Regular UFS to UFS LiveUpgrade used to take a while to create the boot environment, etc. Complicated :-).
As of Solaris Express Community Edition 90, you can use LiveUpgrade with ZFS. You can also LU a UFS system to ZFS.
One of the benefits of ZFS root is the ZFS clone command (lucreate -n happens in a second):

# lucreate -n sxce91
Checking GRUB menu...
Analyzing system configuration.
No name for current boot environment.
INFORMATION: The current boot environment is not named - assigning name .
Current boot environment is named .
Creating initial configuration for primary boot environment .
The device is not a root device for any boot environment; cannot get BE ID.
PBE configuration successful: PBE name PBE Boot Device .
Comparing source boot environment file systems with the file
system(s) you specified for the new boot environment. Determining which
file systems should be in the new boot environment.
Updating boot environment description database on all BEs.
Updating system configuration files.
Creating configuration for boot environment .
Source boot environment is .
Creating boot environment .
Cloning file systems from boot environment to create boot environment .
Creating snapshot for on .
Creating clone for on .
Setting canmount=noauto for in zone on .
Creating snapshot for on .
Creating clone for on .
No entry for BE in GRUB menu
Population of boot environment successful.
Creation of boot environment successful.