119 lines
3.5 KiB
Bash
Executable File
119 lines
3.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright (C) 2023 Umorpha Systems
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# SPDX-License-Identifier: AGPL-3.0-or-later
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set -euE -o pipefail
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set -x
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main() {
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local device rootfs
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device=$1
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rootfs=$2
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echo ":: Installing '${rootfs}' to '${device}'"
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cleanup=()
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trap 'for (( i=${#cleanup[@]}-1; i >= 0; i-- )); do eval "${cleanup[$i]}"; done' EXIT
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local tmpdir
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tmpdir="$(mktemp -dt "${0##*/}.XXXXXXXXXX")"
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cleanup+="rmdir -- ${tmpdir@Q}"
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########################################################################
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if [[ -f "$device" ]]; then
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echo " file '${device}' is not a block device, setting up a loopback device..."
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device=$(losetup --find --show --partscan -- "$device")
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echo " ... '${device}'"
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cleanup+=("losetup --detach ${device@Q}")
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fi
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local devicep="$device"
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if [[ "$devicep" == *[0-9] ]]; then
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devicep+='p'
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fi
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########################################################################
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echo ":: Setting up GPT"
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dd if=/dev/zero of="$device" bs=512 count=4
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cat >"$tmpdir/00-esp.conf" <<-EOF
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[Partition]
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Type=esp
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Format=vfat
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Label=Umorpha EFI System Partition
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SizeMinBytes=512M
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SizeMaxBytes=512M
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EOF
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cat >"$tmpdir/10-lvm.conf" <<-EOF
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[Partition]
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# https://en.wikipedia.org/w/index.php?title=User_talk:Claunia&diff=prev&oldid=1182832243
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Type=E6D6D379-F507-44C2-A23C-238F2A3DF928
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Label=Umorpha LVM Partition
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EOF
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systemd-repart \
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--empty=allow --dry-run=no \
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--no-pager \
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--definitions="$tmpdir" \
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"$device"
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rm -- "$tmpdir"/*.conf
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########################################################################
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echo ":: Setting up LVM"
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pvcreate "${devicep}2"
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vgcreate vg_umorpha "${devicep}2"
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cleanup+=("vgchange --activate=n vg_umorpha")
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lvcreate --name=lv_root_a --size="$(stat --format='%s' -- "$rootfs")b" vg_umorpha
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pv -- "$rootfs" >/dev/mapper/vg_umorpha-lv_root_a
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lvcreate --name=lv_root_overlay --size=1G vg_umorpha
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mkfs.ext4 /dev/mapper/vg_umorpha-lv_root_overlay
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########################################################################
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echo ":: Configuring boot"
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local selector_boot selector_root selector_overlay
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selector_boot="$( blkid --output=export "${devicep}1" | grep ^UUID=)"
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selector_root="$( blkid --output=export /dev/mapper/vg_umorpha-lv_root_a | grep ^UUID=)"
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selector_overlay="$(blkid --output=export /dev/mapper/vg_umorpha-lv_root_overlay | grep ^UUID=)"
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mkdir "$tmpdir/root"
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cleanup+=("rmdir -- ${tmpdir@Q}/root")
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mount -o ro -- /dev/mapper/vg_umorpha-lv_root_a "$tmpdir/root"
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cleanup+=("umount ${tmpdir@Q}/root")
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mkdir "$tmpdir/overlay"
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cleanup+=("rmdir -- ${tmpdir@Q}/overlay")
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mount -- /dev/mapper/vg_umorpha-lv_root_overlay "$tmpdir/overlay"
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cleanup+=("umount ${tmpdir@Q}/overlay")
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mkdir "$tmpdir/mnt" "$tmpdir/overlay/upperdir" "$tmpdir/overlay/workdir"
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cleanup+=("rmdir -- ${tmpdir@Q}/mnt")
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mount -t overlay -o "lowerdir=${tmpdir}/root,upperdir=${tmpdir}/overlay/upperdir,workdir=${tmpdir}/overlay/workdir" umorpha-rootfs \
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"${tmpdir}/mnt"
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cleanup+=("umount ${tmpdir@Q}/mnt")
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mount -- "${devicep}1" "$tmpdir/mnt/boot"
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cleanup+=("umount ${tmpdir@Q}/mnt/boot")
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mkdir -p "$tmpdir/mnt/etc/kernel"
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echo root=$selector_root overlay_root=$selector_overlay boot=$selector_boot rw >"$tmpdir/mnt/etc/kernel/cmdline"
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mkdir -p -- "$tmpdir/mnt/boot/EFI/Linux"
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if ! arch-chroot -- "$tmpdir/mnt" sh -c "printf '%s\n' usr/lib/modules/*/vmlinuz | /usr/share/libalpm/scripts/mkinitcpio install"; then
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pushd "$tmpdir/mnt"
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urxvt
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popd
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fi
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install -D "$tmpdir/mnt/usr/lib/systemd/boot/efi/systemd-bootx64.efi" "$tmpdir/mnt/boot/EFI/BOOT/BOOTX64.EFI"
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}
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main "$@"
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