[Linux-cluster] Re: CLVMD hangs on 2nd node startup and hangs all gfs nodes.

[Tracey Flanders]

I ended up abandoning Qemu KVM Virtual Machines all together and going back to VMware Server Beta 2. For what ever reason the servers could communictate just fine. Maybe it was sending the wrong IP Address, like the NAT'd IP. Doesn't make sense for it to NAT an IP thats on the same network. Anyways, I setup the same rig on 4 vmware virtual machines running CentOS 5.1 and it works great. I must be doing something wrong with Qemu KVM networking. It's disappointing because Qemu KVMs run a lot better on my box than vmware, even though I have tweaked the configs for performance. Oh well, I need to do some more reading I guess. Thanks for all the info. 

> Message: 7
> Date: Tue, 29 Apr 2008 09:50:26 -0600
> From: Gary Romo 
> Subject: Re: [Linux-cluster] CLVMD hangs on 2nd node startup and hangs
> 	all	gfs	nodes.
> To: linux clustering 
> Message-ID:
> 	
> Content-Type: text/plain; charset="us-ascii"
> 
> Had you seen this?
> 
> https://bugzilla.redhat.com/show_bug.cgi?id=435491
> 
> Gary
> 
> 
> 
> 
> Tracey Flanders  
> Sent by: linux-cluster-bounces at redhat.com
> 04/25/2008 10:34 AM
> Please respond to
> linux clustering 
> 
> 
> To
> 
> cc
> 
> Subject
> [Linux-cluster] CLVMD hangs on 2nd node startup and hangs all gfs nodes.
> 
> 
> 
> 
> 
> 
> I've been trying to setup a 3 server cluster with GFS mounted over iSCSI 
> on Qemu Virtual Machines. A 4th server acts as a iSCSI Target. I found and 
> article that explains my issue, but I can't seem to figure out what the 
> solution is. QUOTED from : http://kbase.redhat.com/faq/FAQ_51_10923.shtm 
> After successfully setting up a cluster, cman_tool shows the cluster is 
> healthy. Mounting the gfs mount on the first node works successfully. 
> However, when mounting gfs on the second node, the mount command hangs. 
> Writing to a file on the first node also hangs. On the second node, the 
> following error is seen in /var/log/messages: Jul 18 14:49:27 blade3 
> kernel: Lock_Harness 2.6.9-72.2 (built Apr 24 2007 12:45:55) installed Jul 
> 18 14:49:27 blade3 kernel: GFS 2.6.9-72.2 (built Apr 24 2007 12:46:12) 
> installed Jul 18 14:52:53 blade3 kernel: GFS: Trying to join cluster 
> "lock_dlm", "vcomcluster:testgfs" Jul 18 14:52:53 blade3 kernel: Lock_DLM 
> (built Apr 24 2007 12:45:57) installed Jul 18 14:52:53 blade3 kernel: dlm: 
> connect from non cluster node Jul 18 14:52:53 blade3 kernel: dlm: connect 
> from non cluster node END QUOTE My Virtual Machines only have one 
> interface so I still can't figure out why this is happening. I can 
> successfully mount the GFS partition on any one node but as soon as I try 
> to start the clvmd on a 2nd node it hangs the whole cluster. I'm wondering 
> if its a Qemu VM network issue? Each host can ping each other by name and 
> ip. The cluster works fine but I cant get GFS to work on th VMs. Is it 
> possible to debug the clvmd to see what IP Address it is sending? Thanks, 
> Tracey Flanders 
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