[Linux-cluster] Unable to obtain lock

[Marc Grimme]

Hello,
yesterday we saw a clusterfreeze (which seems to come from the rgmanager) with 
RHEL4/U4 GFS installed (see logs) consisting of 6 nodes x86_64 Architecture.
After fencing one node the cluster came back to live.
Any idea what could have happend? 
And why didn't the cluster "heal" itself?

Thanks and Regards 
Marc.

------------------------------------------------------------------------------------------
Jan 25 17:05:42 lilr623a clurgmgrd: [20947]:  Executing
/usr/local/swadmin/caa/SAP/P06DB status  
Jan 25 17:05:47 lilr623e clurgmgrd[21137]:  #48: Unable to obtain
cluster lock: Connection timed out  
Jan 25 17:05:48 lilr623d clurgmgrd[20293]:  #48: Unable to obtain
cluster lock: Connection timed out  
Jan 25 17:05:48 lilr623b clurgmgrd[20883]:  #48: Unable to obtain
cluster lock: Connection timed out  
Jan 25 17:05:49 lilr623f clurgmgrd[21489]:  #48: Unable to obtain
cluster lock: Connection timed out  
Jan 25 17:06:03 lilr623a clurgmgrd: [20947]:  Executing /etc/init.d/ldap
status  
Jan 25 17:06:19 lilr623f clurgmgrd[21489]:  #50: Unable to obtain
cluster lock: Connection timed out  
Jan 25 17:06:22 lilr623a clurgmgrd: [20947]:  Executing
/usr/local/swadmin/caa/SAP/P06DB status  
--------------------------------------------------------------------------------------
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Gruss / Regards,

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Marc Grimme
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