Description of problem:
I had a cluster with a DLM conf file and I then used the GUI to switch to a GULM
file and then back to DLM again. Here is what the file looked like before
starting the GUI and then after the lock switching:

<?xml version="1.0"?>
<cluster name="link-cluster" config_version="1">

<cman>
</cman>



<fence_daemon post_join_delay="20" post_fail_delay="20" clean_start="0"/>

<clusternodes>
        <clusternode name="link-10.lab.msp.redhat.com" votes="1">

                <fence>
                        <method name="single">
                                <device name="apc" switch="2" port="2"/>
                        </method>
                </fence>
        </clusternode>
        <clusternode name="link-12.lab.msp.redhat.com" votes="1">

                <fence>
                        <method name="single">
                                <device name="apc" switch="2" port="4"/>
                        </method>
                </fence>
        </clusternode>
        <clusternode name="link-08" votes="1">

                <fence>
                        <method name="single">
                                <device name="apc" switch="1" port="8"/>
                        </method>
                </fence>
        </clusternode>
</clusternodes>


<fencedevices>
        <fencedevice name="apc" agent="fence_apc" ipaddr="link-apc" login="apc"
passwd="apc"/>
</fencedevices>


<rm>
</rm>

</cluster>




AFTER (note the missing and added tags):

<?xml version="1.0" ?>
<cluster config_version="2" name="link-cluster">
        <fence_daemon clean_start="0" post_fail_delay="20" post_join_delay="20"/>
        <clusternodes>
                <clusternode name="link-10.lab.msp.redhat.com" votes="1">
                        <fence>
                                <method name="single">
                                        <device name="apc" port="2" switch="2"/>
                                </method>
                        </fence>
                </clusternode>
                <clusternode name="link-12.lab.msp.redhat.com" votes="1">
                        <fence>
                                <method name="single">
                                        <device name="apc" port="4" switch="2"/>
                                </method>
                        </fence>
                </clusternode>
                <clusternode name="link-08" votes="1">
                        <fence>
                                <method name="single">
                                        <device name="apc" port="8" switch="1"/>
                                </method>
                        </fence>
                </clusternode>
        </clusternodes>
        <fencedevices>
                <fencedevice agent="fence_apc" ipaddr="link-apc" login="apc"
name="apc" passwd="apc"/>
        </fencedevices>
        <rm>
                <failoverdomains/>
                <resources/>
        </rm>
        <cman/>
</cluster>


Version-Release number of selected component (if applicable):
-42

How reproducible:
everytime