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Re: [Linux-cluster] problem with GNBD device


On 10/16/07, linux-cluster-request redhat com <linux-cluster-request redhat com > wrote:

Message: 9
Date: Mon, 15 Oct 2007 11:42:13 -0400
From: Lon Hohberger < lhh redhat com>
Subject: Re: [Linux-cluster] problem with GNBD device
To: linux clustering <linux-cluster redhat com>
       <1192462933 27135 24 camel ayanami boston devel redhat com>
Content-Type: text/plain

On Fri, 2007-10-12 at 10:18 +0800, Changer Van wrote:
> Hi all,
> I set up a http HA cluster consist of 3 nodes.
> Node 1 is set to gnbd server for fencing.
> Node 2 and node 3 are set to http HA.
> In case the http service is running on node 3.
> Once the network cable of node 3 was unplug,
> the service would shift to node 2 properly,
> but cman service on node 3 was killed after the catble was plugged in,
> and cman's pid file was still there.

After a node is evicted from the cluster, you generally need to reset it
before it can rejoin the cluster.
But I can not restart cman hung by fencing and I have to reboot the system forcedly.
After the system is rebooted, cman is running and node 3 rejoins the cluster.

> partial log messages on node 3:
> openais[6621]: [CPG  ] got joinlist message from node 1
> openais[6621]: [CPG  ] got joinlist message from node 2
> openais[6621]: [CMAN ] cman killed by node 3 for reason 2
> gnbd_import: ERROR [../../utils/gnbd_utils.c:78] cman_init failed :
> Connection refused
> gfs_controld[6648]: cman_start_notification error -1 104
> dlm_controld[6641]: cluster is down, exiting
> fenced[6635]: cluster is down, exiting
> fence_node[6645]: agent "fence_gnbd" reports: gnbd_import: ERROR
> cannot get node name : Connection refused gnbd_import: ERROR If you
> are not planning to use a cluster manager, use -n failed: fence_gnbd,
> node03

This is weird...  CMAN killed itself on node 3?
Yes, I think so, cman killed itself for reason 2, What is the reason 2?

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