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Diffstat (limited to 'assets/zfs/stage1.sh')
| -rwxr-xr-x | assets/zfs/stage1.sh | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/assets/zfs/stage1.sh b/assets/zfs/stage1.sh new file mode 100755 index 0000000..392ff74 --- /dev/null +++ b/assets/zfs/stage1.sh @@ -0,0 +1,210 @@ +#!/usr/bin/env bash +# install arch linux on zfs root, stage one +# Craig Jennings <c@cjennings.net> +# +# https://openzfs.github.io/openzfs-docs/Getting%20Started/Arch%20Linux/Root%20on%20ZFS.html +# + +set -e # halt on any error + +# -------------------------- Prerequisites -------------------------- + +sed -i "s/^#ParallelDownloads = 5$/ParallelDownloads = 15/" /etc/pacman.conf +# These are now done in stage 0 +# pacman-key --init +# pacman-key --refresh-keys +# pacman --noconfirm -Sy archlinux-keyring +loadkeys us +timedatectl set-ntp true + +### --------------------------- Choose Disk --------------------------- + +all_disk_ids=( $(ls /dev/disk/by-id/) ) +echo ""; echo "Select the disk id to use. All data will be erased." +select disk_id in "${all_disk_ids[@]}"; do + # ensure valid selection + if [[ -n $disk_id ]]; then + selection=$disk_id + break + else + echo "Invalid. Try again." + fi +done + +# Confirm the selected disk +read -p "Confirm: '$selection' [y/n]? " choice +if [[ "$choice" != "y" ]]; then + echo "Exiting..." + exit 1 +fi + +DISK="/dev/disk/by-id/$selection" +MNT=/mnt # Set a mount point +SWAPSIZE=4 # Set swap size in GB +RESERVE=1 # Set how much space to leave at the end of disk, minimum 1GB + +### --------------------------- Erase Disk ------------------------- +echo ""; echo "### Erasing Disk" +blkdiscard -f "${DISK}" || true # discard all sectors on flash-based storage +sgdisk --zap-all "${DISK}" # clear the disk + +### ------------------------- Partition Disk ------------------------ +echo ""; echo "### Partitioning Disk" +parted --script --align=optimal "${DISK}" -- \ + mklabel gpt \ + mkpart EFI 2MiB 1GiB \ + mkpart bpool 1GiB 5GiB \ + mkpart rpool 5GiB -$((SWAPSIZE + RESERVE))GiB \ + mkpart swap -$((SWAPSIZE + RESERVE))GiB -"${RESERVE}"GiB \ + mkpart BIOS 1MiB 2MiB \ + set 1 esp on \ + set 5 bios_grub on \ + set 5 legacy_boot on + +### ---------------------- Setup Encrypted Swap --------------------- +echo ""; echo "### Encrypted Swap" +for i in ${DISK}; do + cryptsetup open --type plain --key-file /dev/random "${i}"-part4 "${i##*/}"-part4 + mkswap /dev/mapper/"${i##*/}"-part4 + swapon /dev/mapper/"${i##*/}"-part4 +done + +# ------------------- Create Boot And Root Pools ------------------ + +# This step creates a separate boot pool for /boot with the features limited to +# only those that GRUB supports, allowing the root pool to use any/all features. + +echo ""; echo "### Checking ZFS Module" +modprobe zfs # ensure zfs module is loaded + +echo ""; echo "### Creating Boot Pool" +# shellcheck disable=SC2046 +zpool create -d \ + -o feature@async_destroy=enabled \ + -o feature@bookmarks=enabled \ + -o feature@embedded_data=enabled \ + -o feature@empty_bpobj=enabled \ + -o feature@enabled_txg=enabled \ + -o feature@extensible_dataset=enabled \ + -o feature@filesystem_limits=enabled \ + -o feature@hole_birth=enabled \ + -o feature@large_blocks=enabled \ + -o feature@lz4_compress=enabled \ + -o feature@spacemap_histogram=enabled \ + -o ashift=12 \ + -o autotrim=on \ + -O acltype=posixacl \ + -O canmount=off \ + -O compression=lz4 \ + -O devices=off \ + -O normalization=formD \ + -O relatime=on \ + -O xattr=sa \ + -O mountpoint=/boot \ + -R "${MNT}" \ + bpool \ + $(for i in ${DISK}; do + printf '%s ' "${i}-part2"; + done) + +echo ""; echo "### Creating Root Pool" +# shellcheck disable=SC2046 +zpool create \ + -o ashift=12 \ + -o autotrim=on \ + -R "${MNT}" \ + -O acltype=posixacl \ + -O canmount=off \ + -O compression=zstd \ + -O dnodesize=auto \ + -O normalization=formD \ + -O relatime=on \ + -O xattr=sa \ + -O mountpoint=/ \ + rpool \ + $(for i in ${DISK}; do + printf '%s ' "${i}-part3"; + done) + +echo ""; echo "### Creating Unencrypted Root System Container" +# create UNENCRYPTED root system container +zfs create \ + -o canmount=off \ + -o mountpoint=none \ +rpool/archlinux + +# --------------------- Create System Datasets -------------------- +echo ""; echo "### Creating System Datasets" +zfs create -o canmount=noauto -o mountpoint=/ rpool/archlinux/root +zfs mount rpool/archlinux/root +zfs create -o mountpoint=legacy rpool/archlinux/home +mkdir "${MNT}"/home +mount -t zfs rpool/archlinux/home "${MNT}"/home +zfs create -o mountpoint=legacy rpool/archlinux/var +zfs create -o mountpoint=legacy rpool/archlinux/var/lib +zfs create -o mountpoint=legacy rpool/archlinux/var/log +zfs create -o mountpoint=none bpool/archlinux +zfs create -o mountpoint=legacy bpool/archlinux/root +mkdir "${MNT}"/boot +mount -t zfs bpool/archlinux/root "${MNT}"/boot +mkdir -p "${MNT}"/var/log +mkdir -p "${MNT}"/var/lib +mount -t zfs rpool/archlinux/var/lib "${MNT}"/var/lib +mount -t zfs rpool/archlinux/var/log "${MNT}"/var/log + +# ---------------------- Format And Mount ESP --------------------- +echo ""; echo "### Format And Mount ESP" +for i in ${DISK}; do + mkfs.vfat -n EFI "${i}"-part1 + mkdir -p "${MNT}"/boot/efis/"${i##*/}"-part1 + mount -t vfat -o iocharset=iso8859-1 "${i}"-part1 "${MNT}"/boot/efis/"${i##*/}"-part1 +done + +mkdir -p "${MNT}"/boot/efi +mount -t vfat -o iocharset=iso8859-1 "$(echo "${DISK}" | sed "s|^ *||" | cut -f1 -d' '|| true)"-part1 "${MNT}"/boot/efi + +### -------------------------- Install Base ------------------------- +echo ""; echo "### Installing Base" +# install packages with pacstrap +pacstrap "${MNT}" \ + base \ + base-devel \ + dkms \ + efibootmgr \ + git \ + grub \ + intel-ucode \ + linux-firmware \ + linux-lts \ + linux-lts-headers \ + man-db \ + man-pages \ + vi + +# create fstab and remove all zroot entries +genfstab -U -p "${MNT}" >> "${MNT}"/etc/fstab +sed -i '/^# zroot/d' "${MNT}"/etc/fstab +sed -i '/^zroot/d' "${MNT}"/etc/fstab +sed -i '/^$/d' "${MNT}"/etc/fstab +echo "" >> "${MNT}"/etc/fstab # one blank line at the end + +# copy over dns settings to the new system +cp -v /etc/resolv.conf "${MNT}"/etc + +# copy stage2 script to the new system +cp ./stage2.sh "${MNT}"/root + +# ----------------------------- Chroot ---------------------------- + +echo ""; echo "Done with Stage One" +chroot "${MNT}" /usr/bin/env DISK="${DISK}" /root/stage2.sh + +# -------------------------- After Chroot ------------------------- + +umount -Rl "${MNT}" +zfs snapshot -r rpool@initial-installation +zfs snapshot -r bpool@initial-installation + +zpool export -a + +echo ""; echo "Done with Stage Two" |