The script below restarts a virtual machine instance on boot as per the instructions on the virtual machines page. It assumes the following:

• the virtual machine will be running under user nano.
• the virtual machine is located under the /srv/nano/ subdirectory.

This file has to be placed in the /etc/init.d/ subdirectory and activated with:

chmod +x /usr/sbin/nano
/usr/sbin/update-rc.d nano defaults

after which the virtual machine can be booted using:

/etc/init.d/nano restart

nano

#!/bin/sh
###########################################################################
##  Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3      ##
##  Please see: http://www.gnu.org/licenses/gpl.html for legal details,  ##
##  rights of fair usage, the disclaimer and warranty conditions.        ##
###########################################################################
### BEGIN INIT INFO
# Provides: nano
# Required-Start: $local_fs $remote_fs $network $syslog $named
# Required-Stop: $local_fs $remote_fs $network $syslog $named
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# X-Interactive: false
# Short-Description: nano service
### END INIT INFO
 
#nano service
NANO_USER="nano"
 
start() {
   echo "Starting nano..."
   HOMEDIR=`getent passwd $NANO_USER | cut -d: -f6`
   if [ -f $HOMEDIR/nano.img ]; then
       HOME="$HOMEDIR" start-stop-daemon --start -c root --pidfile $HOMEDIR/nano.pid --make-pidfile --exec /usr/bin/kvm -- -hda $HOMEDIR/nano.img -m 512 -cpu kvm64 -name nano -enable-kvm -net nic,vlan=0 -net tap,vlan=0,ifname=nan0,script=$HOMEDIR/nan-up.sh -pidfile $HOMEDIR/nano.pid -runas nano -daemonize -vnc :1 
   fi
}
 
stop() {
   echo "Stopping nano..."
   HOMEDIR=`getent passwd $NANO_USER | cut -d: -f6`
   if [ -f $HOMEDIR/nano.img ]; then
       start-stop-daemon -o -c $NANO_USER -K -u $NANO_USER --pidfile $HOMEDIR/nano.pid -x /usr/bin/kvm -- -hda $HOMEDIR/nano.img -m 512 -cpu kvm64 -name nano -enable-kvm -net nic,vlan=0 -net tap,vlan=0,ifname=nan0,script=$HOMEDIR/nan-up.sh -pidfile $HOMEDIR/nano.pid -runas nano -daemonize -vnc :1
   fi
}
 
status() {
 
   dbpid=`pgrep -u $NANO_USER kvm`
   if [ -z $dbpid ] ; then
       echo "kvm for USER $NANO_USER: not running."
   else
       echo "kvm for USER $NANO_USER: running (pid $dbpid)"
   fi
 
}
 
case "$1" in
 
   start)
       start
       ;;
   stop)
       stop
       ;;
   restart|reload|force-reload)
       stop
       start
       ;;
   status)
       status
       ;;
   *)
       echo "Usage: /etc/init.d/nano {start|stop|reload|force-reload|restart|status}"
       exit 1
 
esac
 
exit 0