beadm

In my last post I wrote a short howto to handmade zfs rpool cloning. It takes only a few steps, but forgetting one of them may provide wrong results. But OpenSolaris has one nice tool to do it all for you:

beadm create opensolaris-2

Simply do it, and your system will be cloned, your grub will have a new entry and the new filesystem's /etc/vfstab will have it's '/' entry corrected.
Now, why not do a clone every few days, just in case you ever remove your '/etc'?