First I may have another valuable information: http://www.opensolaris.org/jive/thread.jspa?messageID=176478𫅞
where I exactly asked the same and got a lot of help. And this may be also of help: http://unixsadm.blogspot.com/2008/06/solaris-zfs-to-zfs-liveupgrade.html There is also a tutorial on how to liveupgrade with UFS. Great information at all ... Roman.
