rootaufs.sh

# 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 3 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, see <http://www.gnu.org/licenses/>.

# Create directories for mount points
mkdir /aufs
mkdir /ro
mkdir /rw

# Remount root using aufs and tmpfs
mount -t tmpfs aufs-tmpfs /rw
mount --move ${rootmnt} /ro
mount -t aufs -o dirs=/rw:/ro=ro aufs /aufs
mount --move /ro /aufs/ro
mount --move /rw /aufs/rw
mount --move /aufs ${rootmnt}

# Remove the old root mount from fstab
sed -i '/ \/ /d' /etc/fstab