Originally posted by: SystemAdmin

Hi,
I’m working on a AIX6.1 box in a production environment & got the "Unable to create logical volume" error while tried to allocate a new lv (using mklv command).
I have checked the existing rootvg & it has enough free PP’s.I have attached the error info.
Anybody have any idea what is the cause of the problem & what’s the necessary steps to resolve this issue?

Any help will be appreciated.
#AIX-Forum

Originally posted by: tony.evans

Can you post the full mklv command you used.
#AIX-Forum

Originally posted by: SystemAdmin

Thanks for your attention!
mklv cmd. is ==> mklv -t jfs2 -y lv_sap rootvg 18 (Where PP size is 128)
#AIX-Forum

Originally posted by: tony.evans

Two options, either your volume group / odm are corrupt or you've found a bug in 6.1.

I'd be tempted to raise a call with IBM software support.
#AIX-Forum

Originally posted by: SystemAdmin

Okay. But I have successfully installed VxVM5.0 multipath s/w & configured. After that I got this error.
How can I check the status of ODM?
#AIX-Forum

Originally posted by: tony.evans

I've no experience of VxVM5.0. However, the error message you are seeing means that AIX is struggling to deal with some issue around VG minor numbers. It's either because the ODM is confused, the volume group is corrupt or there's a bug in your software or AIX.

Since it's rootvg you can't simply varyoff and varyon as the error message suggests and I wouldn't suggest a reboot if rootvg is known to have issues.

Since I've never seen the issue before, rather than make it worse I would personally call IBM Software Support.
#AIX-Forum

Originally posted by: SystemAdmin

Hi tony;
appreciate your valuable suggestions...Thanks!

Prasenjit Ray (India)
#AIX-Forum