Changes coming to ZFS in Ubuntu 20.10 include enabling autotrim by default and the ability to encrypt root during install. Of course, those of you who read my blog already know how to do both those things, so no need to wait. ;)
FYI though, I found that autotrim hadn't actually done a trim on my SSD yet by running:
zpool status -t
So I started it manually with:
sudo zpool trim rpool
It took about 2 minutes to complete.
