If room for the necessary code, {,gpt}zfsboot should announce during boot which dataset is currently set as the bootfs. Fix: Make the necessary changes to {,gpt}zfsboot if deemed relevant.
For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped
This one's too old, we need not bother with this one.