#!/usr/bin/sh -x

# Remove zero-areas from qemu image, compress it.
# Copyright (C) 2015 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


dir=$(mktemp -d "/tmp/$(id -n -u)-eimg-XXXXXX")
test -z "$dir" && exit 1
echo "using $dir"

qemu-img convert \
    -f qcow2 "$1" -c -O qcow2 -o compat=0.10 \
    "$dir/eimg-fixed-`date -I`.qcow2"
