Using zfs as root can be hard because zfs modules must be loaded before even being able to access your root partition. As I’ve said many times, when you update your system you always have to check that the zfs modules are build correctly, if not, you’ll have problems in the next boot.
OK, let’s try this:
- Boot with the livecd (or usb) of Antergos (when the installer pops up just click on “try it”)
- Open gnome-terminal
- Load zfs module:
sudo modprobe zfs
- This is a bit tricky. Before being able to chroot to your root you must Import your zfs pool first:
zpool import -R /mnt -f zroot (change zroot to the name of your pool)
- Now you can croot to your root:
Now you should be able to run pacman again, and check its output:
sudo pacman -Syu
sudo pacman -S zfs
Tell us how it goes.