[Linux-cluster] Debug fencing.

[James Tyson]

Hi all.

I'm wondering if there is a way to get decent logs about what fenced  
is trying to do?  My machines (centos5) seem to hang at "starting  
fencing" and the log files aren't showing anything of import.

Any pointers on getting more debugging would be great.  Everything  
seemed to work until I added a third machine and changed the  
multicast address.

My cluster.conf as follows:

<?xml version="1.0" ?>
<cluster config_version="13" name="XenHosts">
         <fence_daemon post_fail_delay="0" post_join_delay="10"/>
         <clusternodes>
                 <clusternode name="karma01.sfac.auckland.ac.nz"  
nodeid="1" votes="1">
                         <multicast addr="239.193.236.96"  
interface="eth0"/>
                         <fence>
                                 <method name="1">
                                         <device name="Faux_Fence"  
nodename="karma01.sfac.auckland.ac.nz"/>
                                 </method>
                         </fence>
                 </clusternode>
                 <clusternode name="karma02.sfac.auckland.ac.nz"  
nodeid="2" votes="1">
                         <multicast addr="239.193.236.96"  
interface="eth0"/>
                         <fence>
                                 <method name="1">
                                         <device name="Faux_Fence"  
nodename="karma02.sfac.auckland.ac.nz"/>
                                 </method>
                         </fence>
                 </clusternode>
                 <clusternode name="xmail01.sfac.auckland.ac.nz"  
nodeid="3" votes="1">
                         <multicast addr="239.193.236.96"  
interface="eth0"/>
                         <fence>
                                 <method name="1">
                                         <device name="Faux_Fence"  
nodename="xmail01.sfac.auckland.ac.nz"/>
                                 </method>
                         </fence>
                 </clusternode>
         </clusternodes>
         <cman>
                 <multicast addr="239.193.236.96"/>
         </cman>
         <fencedevices>
                 <fencedevice agent="fence_manual" name="Faux_Fence"/>
         </fencedevices>
         <rm>
                 <failoverdomains>
                         <failoverdomain name="XenVMs" ordered="0"  
restricted="1">
                                 <failoverdomainnode  
name="karma01.sfac.auckland.ac.nz" priority="1"/>
                                 <failoverdomainnode  
name="karma02.sfac.auckland.ac.nz" priority="1"/>
                         </failoverdomain>
                         <failoverdomain name="MailVMs" ordered="1"  
restricted="0">
                                 <failoverdomainnode  
name="xmail01.sfac.auckland.ac.nz" priority="1"/>
                                 <failoverdomainnode  
name="karma01.sfac.auckland.ac.nz" priority="2"/>
                                 <failoverdomainnode  
name="karma02.sfac.auckland.ac.nz" priority="2"/>
                         </failoverdomain>
                 </failoverdomains>
                 <resources>
                         <clusterfs device="/dev/Xen/Configs"  
force_unmount="0" fsid="18041" fstype="gfs" mountpoint="/var/xen"  
name="XenConfigs" options=""/>
                 </resources>
         </rm>
</cluster>


-- 
James Tyson
x87422
9:249:17:2:157:116:227:91:216:65:86:197:99:86:136:192