Leonardo Romor lromor

Encrypted Btrfs storage setup and maintenance guide

Initial setup with LUKS/dm-crypt

This exemplary initial setup uses two devices /dev/sdb and /dev/sdc but can be applied to any amount of devices by following the steps with additional devices.

Create keyfile:

dd bs=64 count=1 if=/dev/urandom of=/etc/cryptkey iflag=fullblock
chmod 600 /etc/cryptkey

	# /etc/conf.d/redshift

	DISPLAY="${DISPLAY:-:0}"

	# Make it a function in case we have to repeat it in init script later
	set_xauth() {

	# common case (works in almost all tested environments (except of lightdm)):
	#XAUTHORITY="$(ps wwax -C X,Xorg -o args= --sort=-stime \| grep -m 1 -o '\B[-]auth\s/var\S' \| cut -d ' ' -f 2)"