#!/bin/bash
set -e

usage="lxc-pack CONTAINER"

if [ -z "$1" ]; then
	echo $usage
	exit 8
fi

container=$1
stopped=0

cd /var/lib/lxc
if [ ! -e $container ]; then
	echo "container $container not existing"
	exit 16
fi

# check if container is running
if [[ $(lxc-info -s $container) =~ "RUNNING" ]]; then
	echo "Container $container still running. Stop it (Y/n)"
	read answ
	if [ "$ans" == "n" ]; then
		echo "..aborted"
		exit 24
	fi
	echo "..stopping $container"
	lxc-stop $container
	stopped=1
fi

# pack it into /tmp
echo "..packing $container"
tar czf /tmp/$container.tgz $container
echo "..packed into /tmp/$container.tgz"

# restart container?
if [ $stopped -eq 1 ]; then
	lxc-start $container
	echo "..$container started again"
fi