nova upstart jobs will be stopped but not restarted on transition from runlevel 1 to 2

etc/init/nova-ajax-console-proxy.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-ajax-console-proxy.conf:stop on runlevel [016]
etc/init/nova-api.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-api.conf:stop on runlevel [016]
etc/init/nova-compute.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-compute.conf:stop on runlevel [016]
etc/init/nova-instancemonitor.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-instancemonitor.conf:stop on runlevel [016]
etc/init/nova-network.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-network.conf:stop on runlevel [016]
etc/init/nova-objectstore.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-objectstore.conf:stop on runlevel [016]
etc/init/nova-scheduler.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-scheduler.conf:stop on runlevel [016]
etc/init/nova-vncproxy.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-vncproxy.conf:stop on runlevel [016]
etc/init/nova-volume.conf:start on (filesystem and net-device-up IFACE!=lo)
etc/init/nova-volume.conf:stop on runlevel [016]

filesystem and net-device-up will not necessarily happen on transition from runlevel 1 to 2, but all of these jobs will be stopped if the system is transitioned from 2 to 1.