I tested creating a GFS disk with 2 nodes started in the cluster without using LVMs and CLVMD stop.
I mounted the disk on the first node but when I mounted the 2nd node it did the same thing. So it seems its something
other than CLVMD. I've attached my cluster.conf. It's kind of dumbed down because I was troubleshooting. So I removed the GFS mount for a services, etc.
This the config I used.
> If you suspect a problem with clvmd, you could simply remove it from
> the equation and retest, right?
>
> You could just use the underlying iSCSI device and mkfs.gfs on
> that.... at least for testing if clvmd is the problem.
>
> I suppose you could also test if clvmd is the problem by testing the
> logical volumes without GFS in the mix. IOW, create some LVs and read/
> write to them at the same time from different machines. If this is
> working, the file system should work. If the file system doesn't,
> then the problem is probably higher up than clvmd.
>
> brassow
>
> On Apr 25, 2008, at 11:34 AM, Tracey Flanders wrote:
>
>> 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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>
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