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Re: [Linux-cluster] problems with clvmd

On 18/04/11 15:11, Terry wrote:
On Mon, Apr 18, 2011 at 8:57 AM, Christine Caulfield
<ccaulfie redhat com>  wrote:
On 18/04/11 14:38, Terry wrote:

On Mon, Apr 18, 2011 at 3:48 AM, Christine Caulfield
<ccaulfie redhat com>    wrote:

On 17/04/11 21:52, Terry wrote:

As a result of a strange situation where our licensing for storage
dropped off, I need to join a centos 5.6 node to a now single node
cluster.  I got it joined to the cluster but I am having issues with
CLVMD.  Any lvm operations on both boxes hang.  For example, vgscan.
I have increased debugging and I don't see any logs.  The VGs aren't
being populated in /dev/mapper.  This WAS working right after I joined
it to the cluster and now it's not for some unknown reason.  Not sure
where to take this at this point.   I did find one weird startup log
that I am not sure what it means yet:
[root omadvnfs01a ~]# dmesg | grep dlm
dlm: no local IP address has been set
dlm: cannot start dlm lowcomms -107
dlm: Using TCP for communications
dlm: connecting to 2

That message usually means that dlm_controld has failed to start. Try
starting the cman daemons (groupd, dlm_controld) manually with the -D
and read the output which might give some clues to why it's not working.


Hi Chrissie,

I thought of that but I see dlm started on both nodes.  See right below.

[root omadvnfs01a ~]# ps xauwwww | grep dlm
root      5476  0.0  0.0  24736   760 ?        Ss   15:34   0:00
root      5502  0.0  0.0      0     0 ?        S<        15:34   0:00

Well, that's encouraging in a way! But it's evidently not started fully or
the DLM itself would be working. So I still recommend starting it with -D to
see how far it gets.


Linux-cluster mailing list
Linux-cluster redhat com

I think we had posts cross.  Here's my latest:

Ok, started all the CMAN elements manually as you suggested.  I
started them in order as in the init script. Here's the only error
that I see.  I can post the other debug messages if you think they'd
be useful but this is the only one that stuck out to me.

[root omadvnfs01a ~]# /sbin/dlm_controld -D
1303134840 /sys/kernel/config/dlm/cluster/comms: opendir failed: 2
1303134840 /sys/kernel/config/dlm/cluster/spaces: opendir failed: 2
1303134840 set_ccs_options 480
1303134840 cman: node 2 added
1303134840 set_configfs_node 2 local 0
1303134840 cman: node 3 added
1303134840 set_configfs_node 3 local 1

Can I see the whole set please ? It looks like dlm_controld might be stalled registering with groupd.


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