[Linux-cluster] 3 node cluster and quorum disk?

[Jakov Sosic]

Hi.

I have a situation - when two nodes are up in 3 node cluster, and one
node goes down, cluster looses quorate - although I'm using qdiskd...

I think that problem is in switching qdisk master from one node to
another. In that case, rgmanager disables all running services, which is
not acceptable situation. Services are currently set to
autostart="0" because cluster is in evaluation phase.

Here is my config:

<?xml version="1.0"?>
<cluster alias="cluster-c00" config_version="56" name="cluster-c00">
	<fence_daemon post_fail_delay="0" post_join_delay="120"/>
	<!-- DEFINE CLUSTER NODES, AND FENCE DEVICES  -->
	<clusternodes>
		<clusternode name="node01" nodeid="1" votes="1">
			<fence>
				<method name="1">
					<device name="node01-ipmi"/>
				</method>
			</fence>
		</clusternode>
		<clusternode name="node02" nodeid="2" votes="1">
			<fence>
				<method name="1">
					<device name="node02-ipmi"/>
				</method>
			</fence>
		</clusternode>
		<clusternode name="node03" nodeid="3" votes="1">
			<fence>
				<method name="1">
					<device name="node03-ipmi"/>
				</method>
			</fence>
		</clusternode>
	</clusternodes>

	<!-- DEFINE CLUSTER MANAGER BEHAVIOUR -->
	<cman expected_votes="3" deadnode_timeout="80"/>
<!--		<multicast addr="224.0.0.1"/>	</cman> -->

	<!-- Token -->
	<totem token="55000"/>

	<!-- Quorum Disk -->
	<quorumd interval="5" tko="5" votes="2"
	label="SAS-qdisk" status_file="/tmp/qdisk"/>

	<!-- DEFINE FENCE DEVICES -->
	<fencedevices>
		<fencedevice agent="fence_ipmilan" auth="password"
	ipaddr="" login="" passwd="" name="node01-ipmi"/>
		<fencedevice agent="fence_ipmilan" auth="password"
	ipaddr="" login="" passwd="" name="node02-ipmi"/>
		<fencedevice agent="fence_ipmilan" auth="password"
	ipaddr="" login="" passwd="" name="node03-ipmi"/>
	</fencedevices>

</cluster>

Should I change any of the timeouts?






-- 
|    Jakov Sosic    |    ICQ: 28410271    |   PGP: 0x965CAE2D   |
=================================================================
| start fighting cancer -> http://www.worldcommunitygrid.org/   |