+## ------- ##
+## restart ##
+## ------- ##
+
+save_interfaces_if_required () {
+ # Save interfaces if we are upgrading from a pre-1.10 branch.
+ case `ovs-appctl version | sed 1q` in
+ "ovs-vswitchd (Open vSwitch) 1."[0-9].*)
+ ifaces=`internal_interfaces`
+ action "Detected internal interfaces: $ifaces" true
+ if action "Saving interface configuration" save_interfaces; then
+ chmod +x "$script_interfaces"
+ fi
+ ;;
+ esac
+}
+
+restart () {
+ if daemon_is_running ovsdb-server && daemon_is_running ovs-vswitchd; then
+ init_restore_scripts
+ save_interfaces_if_required
+ action "Saving flows" ovs_save save-flows "${script_flows}"
+ save_ofports_if_required
+ fi
+
+ # Restart the database first, since a large database may take a
+ # while to load, and we want to minimize forwarding disruption.
+ stop_ovsdb
+ start_ovsdb
+
+ # Restore of ofports, if required, should happen before vswitchd is
+ # restarted.
+ restore_ofports
+
+ stop_forwarding
+ start_forwarding
+
+ # Restore the saved flows.
+ restore_flows
+
+ # Restore the interfaces if required. Return true even if restore fails.
+ restore_interfaces || true
+}
+