Mark,
I was able to vgrename as you suggested by taking the system to single user
mode.

steps taken:      init  1 ß change the run time level to 1 for single user
mode.
            umount each lvm filesystem
            lvchange –an each LVM file system
            vgrename xxxx zzz
            mount each LVM file system
            lvchange –ay each LVM filesystem.
            Init  3  ß change the run time to 3 for normal network multi
user system.

Thanks Mark.....

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Mark Post replied:
I'd say you need to take the system down to single user mode, umount
all the LVM-based file systems, do the vgrename, then bring the system
back up to its normal runlevel.
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Regards,
Terry L. Spaulding
IBM Global Services
[EMAIL PROTECTED]

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