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Re: [Linux-cluster] problems with clvmd



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
>>> switch
>>> and read the output which might give some clues to why it's not working.
>>>
>>> Chrissie
>>>
>>
>>
>> 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
>>>> /sbin/dlm_controld
>>>> 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.
>
>
> Chrissie
>
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>

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 10.198.1.111 local 0
1303134840 cman: node 3 added
1303134840 set_configfs_node 3 10.198.1.110 local 1


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