#!/bin/bash
set -e

RED='\e[31m'
GREEN='\e[32m'
YELLOW='\e[33m'
RESET='\e[0m'

img_file="PBX-Test.img"

if [[ $EUID -ne 0 ]]; then
  echo -e "${RED}You must be root to do this." 1>&2
  exit 100
fi

losetup -fP $img_file
loop_device=$(losetup -l | grep $img_file | cut -d ' ' -f1)
echo $loop_device

vgchange -a y PBX-vg

lvreduce -L 12G -r PBX-vg/root

partclone.ext4 -c -s /dev/mapper/PBX--vg-root | lz4 -z >./PBX-root.img.lz4

vgchange -a n PBX-vg

losetup -D