On 18/09/13 23:16, Fabio M. Di Nitto wrote:
> On 09/19/2013 12:47 AM, David Lang wrote:
>> I'm trying to get a cluster up and running without using multicast, I've
>> made my cluster.conf be the following, but the systems are still sending
>> to the multicast address and not seeing each other as a result.
>>
>> Is there something that I did wrong in creating the cman segment of the
>> file? unforutunantly the cluster.conf man page just referrs to the
>> corosync.conf man page, but the two files use different config styles.
>>
>> If not, what else do I need to do to disable multicast and just use udpu?
> 
>>  <cman two_node="1" expected_votes="1">
>>   <totem vsftype="none" token="5000"
>> token_retransmits_before_loss_const="10" join="60" consensus="4800"
>> rrp_mode="none" transport="udpu">
>>     <interface ringnumber="0" bindnetaddr="10.1.18.0" mcastport="5405"
>> ttl="1" >
>>       <member memberaddr="10.1.18.177" />
>>       <member memberaddr="10.1.18.178" />
>>     </interface>
>>   </totem>
>>  </cman>
> 
> You don't need all of that...
> 
> <cman two_node="1" expected_votes="1" transport="udpu"/>
> 
> There is no need to specify anything else. memberaddresses et all will
> be determined by the node names.
> 
> Fabio

To add to what Fabio said;

You've not setup fencing. This is not support and, when you use
rgmanager, clvmd and/or gfs2, the first time a fence is called your
cluster will block.

When a node stops responding, the other node will call fenced to eject
it from the cluster. One of the first things fenced does is inform dlm,
which stops giving out locks until fenced tells it that the node is
gone. If the node can't be fenced, it will obviously never successfully
be fenced, so dlm will never start offering locks. This leaves
rgmanager, cman and gfs2 locked up (by design).

-- 
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What if the cure for cancer is trapped in the mind of a person without
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