[gpfsug-discuss] Dual server NSDs

[John Hearns]

I should say I already have a support ticket open for advice on this issue.
We have a filesystem which has NSDs which have two servers defined, for instance:
nsd:
              device=/dev/sdb
              servers=sn007,sn008
              nsd=nsd1
              usage=dataOnly

Can I remove one of these servers?  The object is to upgrade this server and change its hostname, the physical server will stay in place.
Has anyone carried out an operation similar to this?

I guess the documentation here is quite clear:
https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/General%20Parallel%20File%20System%20(GPFS)/page/NSD%20server%20balance
"If you want to change configuration for a NSD which is already belongs to a file system, you need to unmount the file system before running mmchnsd command."
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