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