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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