6.3.2. Optional and mandatory ordering

Here is an example of ordering constraints where Database must start before Webserver, and IP should start before Webserver if they both need to be started:

Example 6.4. Optional and mandatory ordering constraints

<constraints>
<rsc_order id="order-1" first="IP" then="Webserver" kind="Optional"/>
<rsc_order id="order-2" first="Database" then="Webserver" kind="Mandatory" />
</constraints>

Because the above example lets symmetrical default to TRUE, Webserver must be stopped before Database can be stopped, and Webserver should be stopped before IP if they both need to be stopped.