Hi, while I was trying to setup a new cluster I've found a bug in the
valid name length of a cluster.
The MAX_CLUSTER_NAME_LEN is 16, but if I put a cluster name of 16 chars
when a node tries to connect to the cluster the node is refused to
connect and in 'dmesg' you can see this:
CMAN: attempt to join with cluster name 'qmail-be-cluster' refused
CMAN: attempt to join with cluster name 'qmail-be-cluster' refused
CMAN: attempt to join with cluster name 'qmail-be-cluster' refused
CMAN: attempt to join with cluster name 'qmail-be-cluster' refused
Searching through the code I found that It was here where the problem
exists:
-----------------------------------------------------------------------------
/* Check the cluster name matches */
if (strcmp(cluster_name, joinmsg->clustername)) {
printk(KERN_WARNING CMAN_NAME
": attempt to join with cluster name '%s'
refused\n",
joinmsg->clustername);
return -1;
}
----------------------------------------------------------------------------
The name of the cluster was the same in all nodes: qmail-be-cluster.
It's easy to reproduce the problem. Just create a cluster with a name of
16 chars and then It's impossible to connect to the cluster.
This is my conf file in all nodes:
<?xml version="1.0"?>
<cluster config_version="13" name="qmail-be-cluster">
<fence_daemon clean_start="1" post_fail_delay="0"
post_join_delay="3"/>
<clusternodes>
<clusternode name="qmail-be-01" votes="1">
<fence>
<method name="1">
<device name="manopla"
nodename="qmail-be-01"/>
</method>
</fence>
</clusternode>
<clusternode name="qmail-be-04" votes="1">
<fence>
<method name="1">
<device name="manopla"
nodename="qmail-be-04"/>
</method>
</fence>
</clusternode>
<clusternode name="qmail-be-05" votes="1">
<fence>
<method name="1">
<device name="manopla"
nodename="qmail-be-05"/>
</method>
</fence>
</clusternode>
</clusternodes>
<cman/>
<fencedevices>
<fencedevice agent="fence_manual" name="manopla"/>
</fencedevices>
<rm>
<failoverdomains/>
<resources/>
</rm>
</cluster>
I'm using Fedora Core 4 with this rpm's :
kernel-smp-2.6.14-1.1653_FC4
GFS-6.1.0-3
GFS-kernel-smp-2.6.11.8-20050601.152643.FC4.20
cman-kernel-smp-2.6.11.5-20050601.152643.FC4.18
cman-1.0.0-1
ccs-1.0.0-1
dlm-kernel-smp-2.6.11.5-20050601.152643.FC4.17
dlm-1.0.0-3
fence-1.32.1-1
rgmanager-1.9.34-5
lvm2-2.01.08-2.1
lvm2-cluster-2.01.09-3.0
We need to put this on bugzilla, but I don't know how to do it. :(
Thanks
German Staltari
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