[Linux-cluster] Cluster for number-crunching purposes

[Fedele Stabile]

I experienced that using vote=1 for all members gives the same quorum votes as result of command
cman_tool status

Instead i woulk create a quorum disk on SAN storage.
Can you help me?


Jayson Vantuyl wrote:
> I think having 20 votes per node with cman expecting 1 vote could  
> completely break quorum calculation (although it would appear to work  
> just fine until you had a network failure).
> 
> On Jan 10, 2007, at 9:13 AM, Fedele Stabile wrote:
> 
>> I have a new 35-nodes cluster with a SAN for data storage, my SAN  is 
>> connected via SCSI with two nodes.
>> OS is CentOS4 with ClusterSuite
>> Cluster purpose is numer-crinching:
>> SAN disks are GFS and exported via gnbd to the other 33 nodes in  the 
>> cluster.
>> Configuration file cluster.conf is below.
>>
>> This is my first cluster configured with the ClusterSuite, can  anyone 
>> help me to understand if i made any mistake?
>>
>> Thank you
>>
>>  Fedele STABILE
>>
>>
>> /etc/cluster/cluster.conf
>>
>> <?xml version="1.0"?>
>> <cluster config_version="138" name="linuxlab-cl">
>>         <fence_daemon post_fail_delay="0" post_join_delay="20"/>
>>         <clusternodes>
>>                 <clusternode name="server1" votes="20">
>>                         <fence>
>>                                 <method name="1">
>>                                         <device name="ILO_server1"/>
>>                                 </method>
>>                         </fence>
>>                 </clusternode>
>>                 <clusternode name="server2" votes="20">
>>                         <fence>
>>                                 <method name="1">
>>                                         <device name="ILO_sevrer2"/>
>>                                 </method>
>>                         </fence>
>>                 </clusternode>
>>                 <clusternode name="pc0" votes="0">
>>                         <fence>
>>                                 <method name="1">
>>                                         <device name="GNBD_server1"  
>> nodename="pc0"/>
>>                                 </method>
>>                         </fence>
>>                 </clusternode>
>>     .....
>>     .....
>>         </clusternodes>
>>         <cman expected_votes="1"/>
>>         <fencedevices>
>>                 <fencedevice agent="fence_ilo" .... />
>>                 <fencedevice agent="fence_gnbd" name="GNBD_server1"  
>> servers="server1 server2"/>
>>                 <fencedevice agent="fence_ilo" .... />
>>         </fencedevices>
>>         <rm>
>>     .....
>>     .....
>> </cluster>
>>
>>
>>
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> 
> 
>