LVM/LUKS partition creation

part.sh

#!/bin/bash

# stop on first error
set -e

DEVICE=/dev/sdb
LUKS_DEVNAME=CRYPTsys-$(hostname)
VGROUP=VGsys-$(hostname)
LV_VOLUME_PREFIX=LV-$(hostname)-
PART_PREFIX=$(hostname)-
MPT=/mnt/new

# Use the physical blocksize of your system
BLOCKSIZE=$(cat /sys/block/$(basename $DEVICE)/queue/physical_block_size)

# You may want to additionally randomize any bit on your drive 
#dd if=/dev/urandom of=$DEVICe bs=10M 

parted ${DEVICE} mktable gpt
parted ${DEVICE} mkpart fat32 0.5GB 1GB
parted ${DEVICE} mkpart ext2 1GB 100%
parted ${DEVICE} set 1 boot on
parted ${DEVICE} set 2 lvm on

parted ${DEVICE} print

for i in 1 2; do 
	parted ${DEVICE} align-check opt ${i}
done

# Plain, non-encrypted boot-partition
mkfs.fat -n boot -F32 ${DEVICE}1

# Encrypt the whole partition 
cryptsetup -y luksFormat ${DEVICE}2
cryptsetup luksOpen ${DEVICE}2 ${LUKS_DEVNAME}

pvcreate /dev/mapper/${LUKS_DEVNAME}
vgcreate ${VGROUP} /dev/mapper/${LUKS_DEVNAME}

lvcreate -n ${LV_VOLUME_PREFIX}root -L  50G /dev/${VGROUP}
lvcreate -n ${LV_VOLUME_PREFIX}home -L 200G /dev/${VGROUP}
lvcreate -n ${LV_VOLUME_PREFIX}swap -L   8G /dev/${VGROUP}

# Format every partition
mkfs.ext4 -b ${BLOCKSIZE} -L ${PART_PREFIX}root /dev/${VGROUP}/${LV_VOLUME_PREFIX}root
mkfs.ext4 -b ${BLOCKSIZE} -L ${PART_PREFIX}home /dev/${VGROUP}/${LV_VOLUME_PREFIX}home
mkswap    -p ${BLOCKSIZE} -L ${PART_PREFIX}swap /dev/${VGROUP}/${LV_VOLUME_PREFIX}swap

mkdir -p $MPT 
mount /dev/${VGROUP}/${LV_VOLUME_PREFIX}root $MPT
mkdir -p $MPT/home $MPT/boot
mount /dev/${VGROUP}/${LV_VOLUME_PREFIX}home $MPT/home
mount ${DEVICE}1 $MPT/boot

# Install your system now to $MPT