I thought you might be.

I just wanted to mention ZFS.

Have I mentioned how great ZFS is yet?

ZFS is great! However, it's too complicated for most Linux server use cases (especially with just one block device attached); it's not the default (root filesystem); and it's not supported for at least one major enterprise Linux distro family.

It's not as good as ed: https://www.gnu.org/fun/jokes/ed-msg.html