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# Rather convoluted LVM-on-MD-on-LUKS2 layout with 2 swap areas, /boot
# on RAID1, SWAP0 on RAID0, LVM on RAID1 and 4 independently encrypted
# partitions decrypt at early boot stage:
# NAME TYPE MOUNTPOINTS
# vda disk
# ├─vda1 part
# ├─vda2 part
# │ └─md0 raid1 /boot
# ├─vda3 part
# │ └─vda3_crypt crypt
# │ └─md1 raid0 [SWAP]
# └─vda4 part
# └─vda4_crypt crypt
# └─md2 raid1
# ├─cryptvg-swap lvm [SWAP]
# └─cryptvg-root lvm /
# vdb disk
# ├─vdb1 part
# ├─vdb2 part
# │ └─md0 raid1 /boot
# ├─vdb3 part
# │ └─vdb3_crypt crypt
# │ └─md1 raid0 [SWAP]
# └─vdb4 part
# └─vdb4_crypt crypt
# └─md2 raid1
# ├─cryptvg-swap lvm [SWAP]
# └─cryptvg-root lvm /
sfdisk --append /dev/vda <<-EOF
unit: sectors
start=$((64*1024*2)), size=$((128*1024*2)), type=${GUID_TYPE_Linux_FS}
start=$(((64+128)*1024*2)), size=$((64*1024*2)), type=${GUID_TYPE_LUKS}
start=$(((64+128+64)*1024*2)), type=${GUID_TYPE_LUKS}
EOF
udevadm settle
# copy vda's partition table onto vdb
sfdisk -d /dev/vda | sfdisk /dev/vdb
udevadm settle
for d in vda3 vda4 vdb3 vdb4; do
echo -n "${d}_crypt" >/keyfile
cryptsetup luksFormat --batch-mode \
--key-file=/keyfile \
--type=luks2 \
--pbkdf=argon2id \
--pbkdf-force-iterations=4 \
--pbkdf-memory=32 \
-- "/dev/$d"
cryptsetup luksOpen --key-file=/keyfile --allow-discards \
-- "/dev/$d" "${d}_crypt"
udevadm settle
done
mdadm --create /dev/md0 --metadata=default --level=1 --raid-devices=2 /dev/vda2 /dev/vdb2
mdadm --create /dev/md1 --metadata=default --level=0 --raid-devices=2 /dev/mapper/vda3_crypt /dev/mapper/vdb3_crypt
mdadm --create /dev/md2 --metadata=default --level=1 --raid-devices=2 /dev/mapper/vda4_crypt /dev/mapper/vdb4_crypt
udevadm settle
lvm pvcreate /dev/md2
lvm vgcreate "cryptvg" /dev/md2
lvm lvcreate -Zn --size 64m --name "swap" "cryptvg"
lvm lvcreate -Zn -l100%FREE --name "root" "cryptvg"
lvm vgchange -ay "cryptvg"
lvm vgmknodes
udevadm settle
mke2fs -Ft ext4 /dev/cryptvg/root
mount -t ext4 /dev/cryptvg/root "$ROOT"
mkdir "$ROOT/boot"
mke2fs -Ft ext2 -m0 /dev/md0
mount -t ext2 /dev/md0 "$ROOT/boot"
mkswap /dev/cryptvg/swap
swapon /dev/cryptvg/swap
mkswap /dev/md1
swapon /dev/md1
# vim: set filetype=sh :
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