change VG Mode

I am trying to change "VG Mode: Non-Concurrent" to "VG Mode:        Concurrent".  chvg -c or -C doesn't help.

How do yo change it?

thx much

VOLUME GROUP:   prod8vg                  VG IDENTIFIER:  00cdcbdc00004c000000011
7d58f6e08
VG STATE:       active                   PP SIZE:        128 megabyte(s)
VG PERMISSION:  read/write               TOTAL PPs:      861 (110208 megabytes)
MAX LVs:        256                      FREE PPs:       861 (110208 megabytes)
LVs:            0                        USED PPs:       0 (0 megabytes)
OPEN LVs:       0                        QUORUM:         2
TOTAL PVs:      3                        VG DESCRIPTORS: 3
STALE PVs:      0                        STALE PPs:      0
ACTIVE PVs:     3                        AUTO ON:        no
Concurrent:     Enhanced-Capable         Auto-Concurrent: Disabled
VG Mode:        Non-Concurrent                          
MAX PPs per PV: 1016                     MAX PVs:        32
LTG size:       128 kilobyte(s)          AUTO SYNC:      no
HOT SPARE:      no                       BB POLICY:      relocatable
ethanjohnsonsAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Duncan MeyersCommented:
Check that you have Cluster Resource Manager for HACMP software installed:
lslpp -L |grep cluster
cluster.clvm.rte or cluster.es.clvm.rte will be displayed

You need to stop HACMP to change the VG mode - so you'll need to organise an outage if this is a production system.

http://publib.boulder.ibm.com/infocenter/pseries/v5r3/index.jsp?topic=/com.ibm.aix.cmds/doc/aixcmds1/chvg.htm

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Storage

From novice to tech pro — start learning today.