I'd like to add a second disk in a raid-1 configuration (would the proper jargon be a "mirrored pool"?). I have a fresh ubuntu 24.04 installation and my present disk configuration is whatever the ubuntu installer sets up when you opt for an encrypted ZFS. The exact relation between LUKS, ZFS (or any FS), and raid is not at all clear to me, so please be specific. None of the guides I've read so far seem very complete or descriptive but apparently it can be done. Thanks.