Arch mbr+efi bootable usb installation using zfs with encryption at rest

arch_on_usb_with_zfs.txt

# Partition the drive:
parted /dev/sdX
  mklabel gpt
  mkpart primary fat32 1MiB 2MiB
  mkpart ESP fat32 2MiB 514MiB
  mkpart primary ext4 514MiB 100%
  set 1 bios_grub on
  set 2 esp on
  set 2 boot on
  quit

# Format the EFI partition:
mkfs.fat -F32 /dev/sdX2

# Install the system as detailed in my other gist, but:
#  - user a pool name other than zroot/rpool (a more unique name the better)
#  - do not install the bootloader
#  - do not install/configure zectl

# All the following commands are to be given WITHIN the chrooted environment.

# Disable cache for the pool:
zpool set cachefile=none pool_name
rm /etc/zfs/zpool.cache
systemctl disable zfs-import-cache

# Install grub:
pacman -S grub

# Configure grub to work with zfs (using the real zfs pool):
vim /etc/default/grub
  GRUB_CMDLINE_LINUX_DEFAULT=""
  GRUB_CMDLINE_LINUX="verbose pause_on_oops=15 zfs=pool_name/e/ROOT/default rw"

# Install grub (mbr):
grub-install --target=i386-pc /dev/sdb --recheck

# Install grub (efi):
grub-install --target=x86_64-efi --efi-directory=/boot --recheck

# Generate grub config:
ZPOOL_VDEV_NAME_PATH=1 grub-mkconfig -o /boot/grub/grub.cfg

# IMPORTANT: ZPOOL_VDEV_NAME_PATH=1 must be used on the live system every time
#            grub-mkconfig is run, or it will fail!