Arch install with ZFS root on LUKS and EFISTUB

gistfile1.txt

# Create your partition layout (using GPT)
# 1 - ESP (FAT32, 128M)
# 2 - Linux (luks, any size)

# Format your partitions
mkfs.fat -F32 /dev/sdx1
cryptsetup luksFormat --key-size 512 --cipher aes-xts-plain64 /dev/sdx2

# Open your luks partition
cryptsetup open /dev/sdx2 luks_root

# Make sure ZFS is loaded before continuing
modprobe zfs

# Create your ZFS pool
# Note: 
# - For drives with a block size of 512b, use ashift=9
# - For drives with a blocks size of 4KiB, use ahift=12
zpool create \
 -o ashift=12\
 -O xattr=sa\
 -O redundant_metadata=most\
 -O normalization=formD\
 -O acltype=posixacl\
 -O compression=lz4\
 -O dedup=on\
 -O dnodesize=legacy\
 -O relatime=on\
 -O mountpoint=none\
 -O canmount=off\
 -O devices=off\
 -m none\
 zroot\
 /dev/mapper/luks_root
 
# Export your new zpool and reimport it with an alternate root to avoid mounting conflicts
zpool export zroot
zpool import -R /mnt zroot

# Create all of your datasets
# 1 - zroot/root (/)
# 2 - zroot/home (/home)
# 3 - zroot/home/root (/root)
# 4 - zroot/home/your_user_here (/home/your_user_here)
# 5 - zroot/var (/var)
zfs create -o mountpoint=/ -o canmount=noauto zroot/root
zfs create -o mountpoint=/home -o canmount=noauto zroot/home
zfs create -o mountpoint=/home/your_user_here -o canmount=noauto zroot/home/your_user_here
zfs create -o mountpoint=/root -o canmount=noauto zroot/home/root
zfs create -o mountpoint=/var -o canmount=noauto zroot/var

# Mount your ESP
mkdir -p /mnt/boot
mount /dev/sdx1 /mnt/boot

# Export your mount configuration to /mnt/etc/fstab
# Note: You must comment out all of the exported ZFS dataset mounts, otheriwse you will experience issues booting
genfstab -pU /mnt > /mnt/etc/fstab

# Add a tmpfs for /tmp to /mnt/etc/fstab
# tmpfs /tmp tmpfs defaults,noatime,mode=1777 0 0

# Install Arch Linux
pacstrap /mnt \
 base\
 base-devel\
 zsh\
 vim\
 git\
 efibootmgr\
 dialog\
 openssh\
 dhcpcd\
 dosfstools\
 linux\
 linux-headers\
 linux-firmware\
 mkinitcpio\
 intel-ucode\
 reflector
 
# Chroot into your new installation
arch-chroot /mnt

# Set your locales
echo "LANG=en_US.UTF-8\nLC_ALL=C\nLANGUAGE=en_US" > /etc/locale.conf
echo "en_US.UTF-8 UTF-8" > /etc/locale.gen
locale-gen

# Set your hostname
echo "your_hostname" > /etc/hostname

# Enable NTP and set your timezone
timedatectl set-ntp true
timedatectl set-timezone your_timezone

# Enable DHCPCD on boot
systemctl enable dhcpcd

oh ok