UNIX for Advanced & Expert Users

Hello all,

Strange problem on p5 520 server. I've created two volume groups, filesystems, etc.. Everything working fine, without any problem. After some tests with a DS4300 unit I wanted to remove the volume groups, change the DS4300 configuration, and re-create a new volumegroup. However, I'm at this time unable to remove the VG. I tried with smitty vg, without success and also using command line, also without success. The error I get is:
0516-010 lqueryvg: Volume group must be varied on; use varyonvg command.
0516-882 reducevg: Unable to reduce volume group.
When I try to varyonvg the VG I get the following:
0516-008 varyonvg: LVM system call returned an unknown
error code (3).
Apparently, the VG is still 'seen' by the system, but since no more disks are attached to it, something went wrong.
I think I have to remove the VG in question directly from the ODM, but haven't got a clue on how to do this. Can anyone advice? All answers are greatly appreciated.

Kind regards,

Eric Van Steenbergen