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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">I was fighting a very similar issue today. I am not familiar with the fencing you are using, but I would guess your fence device is not working properly.
If a node fails and the fencing doesn’t succeed it will halt all gfs activity. If a clustat shows both nodes and the quorum disk online, but no rgmanager try running a fence_tool leave and fence_tool join on both nodes. That worked for me today.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Starting one node with the other node down is failing because it is trying to fence all nodes not present before proceeding. I am testing clean_start=”1”
in the cluster.conf. It has worked well so far. I would definitely read the man page for fenced about clean_start before using it. It does have some risks.<o:p></o:p></span></p>
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color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D">Gary<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> linux-cluster-bounces@redhat.com [mailto:linux-cluster-bounces@redhat.com]
<b>On Behalf Of </b>Mikko Partio<br>
<b>Sent:</b> Wednesday, March 18, 2009 2:43 AM<br>
<b>To:</b> linux clustering<br>
<b>Subject:</b> [Linux-cluster] Problems with cluster (fencing?)<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello all<br>
<br>
I have a two-node cluster with a quorum disk. <br>
<br>
When I pull off the power cord from one node, the other node freezes the shared gfs-volumes and all activity stops, even though the cluster maintains quorum. When the other node boots up, I can see that "starting fencing" takes many minutes and afterwards starting
clvmd fails. That node therefore cannot mount gfs disks since the underlying lvm volumes are missing.
<br>
<br>
Also, if I shut down both nodes and start just one of them, the starting node still waits in the "starting fencing" part many minutes even though the cluster should be quorate (there's a quorum disk)!<br>
<br>
Fencing method used is HP iLO 2. I don't remember seeing this in CentOS 5.1 (now running 5.2). Any clue what might cause this?<br>
<br>
Regards<br>
<br>
Mikko<o:p></o:p></p>
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