#!/bin/bash

function prep {
kvmclient=$1
partition=$2
lvcreate -s /dev/vgserver/${kvmclient} -L 200M  -n ${kvmclient}-backup
kpartx -a /dev/vgserver/${kvmclient}-backup
mount /dev/mapper/vgserver-${kvmclient}--backup${partition} /srv/${kvmclient}
}

function pop {
kvmclient=$1
umount /srv/${kvmclient}
kpartx -d /dev/vgserver/${kvmclient}-backup 
lvremove -f /dev/vgserver/${kvmclient}-backup
}

function check {
c=0
for i in "$@" ; do
    if [ -z "$(ls -A /srv/$i 2>/dev/null)" ]; then
        c=1
        echo WARNING: Abbruch, weil /srv/$i leer erscheint
    fi 
done
[ $c -eq 1 ] && return 1 || return 0
}


prep ipfire 1
prep chapman 1

# check for empty dirs
check ipfire chapman
# backup using rsnapshot
if [ $? -eq 0 ]; then
    rsnapshot daily
fi

# normalzustand herstellen
pop chapman
pop ipfire