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#1 (**permalink**) 01-05-2008, 09:09 AM

How to change IP address on an AIX machine without making GPFS go down?

If I change the IP address, my new address is not showing up from neither
mmlscluster nor mmlsconfig, only the old one. And since that is the
situation after IP change, GPFS will not mount the GPFS file systems. The
same happens if I change the hostname.

Sure it is possible to fool GPFS with an IP alias, I have tried, but it is
for sure more simple way of doing it? mmchcluster, mmchconfig or something?
Without dropping existing GPFS file system?

Thanks!

ArneS

#2 (**permalink**) 01-05-2008, 09:09 AM

1) Which Version of GPFS
2) Have you read the Administratin Guide regarding IP Changes ?

cu
Hajo

#3 (**permalink**) 01-05-2008, 09:09 AM

"Hajo Ehlers" <service@metamodul.com> wrote in message
news:1143652269.584543.16340@j33g2000cwa.googlegro ups.com...
> 1) Which Version of GPFS
> 2) Have you read the Administratin Guide regarding IP Changes ?
>
> cu
> Hajo
>
1) 2.3
2) Ehh. No. About time, sure....

#4 (**permalink**) 01-05-2008, 09:09 AM

ArneS wrote:
> "Hajo Ehlers" <service@metamodul.com> wrote in message
> news:1143652269.584543.16340@j33g2000cwa.googlegro ups.com...
> > 1) Which Version of GPFS
> > 2) Have you read the Administratin Guide regarding IP Changes ?
....
> 2) Ehh. No. About time, sure....

http://publib.boulder.ibm.com/infoce...sctr/index.jsp

Going to GPFS 2.3 Administration .. you will find that you have to
shutdown GPFS on the Cluster node on which you are going to change the
IP &| Hostname

See

http://publib.boulder.ibm.com/infoce...4.html#chnamip

for details
hth
Hajo

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GPFS: File system woun't mount after change of IP address or hostname on master