[gpfsug-discuss] mmlsnode: Unable to determine the local node identity.

Jaime Pinto pinto at scinet.utoronto.ca
Wed Feb 10 20:24:21 GMT 2016


Quoting "Buterbaugh, Kevin L" <Kevin.Buterbaugh at Vanderbilt.Edu>:

> Hi Jaime,
>
> Have you tried wiping out /var/mmfs/gen/* and /var/mmfs/etc/* on the  
>  old nodeA?
>
> Kevin

That did the trick.
Thanks Kevin and all that responded privately.

Jaime



>
>> On Feb 10, 2016, at 1:26 PM, Jaime Pinto <pinto at scinet.utoronto.ca> wrote:
>>
>> Dear group
>>
>> I'm trying to deal with this in the most elegant way possible:
>>
>> Once upon the time there were nodeA and nodeB in the cluster, on a   
>> 'onDemand manual HA' fashion.
>>
>> * nodeA died, so I migrated the whole OS/software/application stack  
>>  from backup over to 'nodeB', IP/hostname, etc, hence 'old nodeB'   
>> effectively became the new nodeA.
>>
>> * Getting the new nodeA to rejoin the cluster was already a pain,   
>> but through a mmdelnode and mmaddnode operation we eventually got   
>> it to mount gpfs.
>>
>> Well ...
>>
>> * Old nodeA is now fixed and back on the network, and I'd like to   
>> re-purpose it as the new standby nodeB (IP and hostname already   
>> applied). As the subject say, I'm now facing node identity issues.   
>> From the FSmgr I already tried to del/add nodeB, even nodeA, etc,   
>> however GPFS seems to keep some information cached somewhere in the  
>>  cluster.
>>
>> * At this point I even turned old nodeA into a nodeC with a   
>> different IP, etc, but that doesn't help either. I can't even start  
>>  gpfs on nodeC.
>>
>> Question: what is the appropriate process to clean this mess from   
>> the GPFS perspective?
>>
>> I can't touch the new nodeA. It's highly committed in production already.
>>
>> Thanks
>> Jaime
>>
>>
>>
>>
>>
>>
>>         ************************************
>> ---
>> Jaime Pinto
>> SciNet HPC Consortium  - Compute/Calcul Canada
>> www.scinet.utoronto.ca - www.computecanada.org
>> University of Toronto
>> 256 McCaul Street, Room 235
>> Toronto, ON, M5T1W5
>> P: 416-978-2755
>> C: 416-505-1477
>>
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>>
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>
>






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Jaime Pinto
SciNet HPC Consortium  - Compute/Calcul Canada
www.scinet.utoronto.ca - www.computecanada.org
University of Toronto
256 McCaul Street, Room 235
Toronto, ON, M5T1W5
P: 416-978-2755
C: 416-505-1477

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