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

[Jaime Pinto]

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






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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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