topic Re: Dynamically Change MAX PV allowed for a VG in Operating System - HP-UX

Dynamically Change MAX PV allowed for a VG

Fern H2O — Tue, 02 Jun 2009 13:03:21 GMT

Hello All,

I have a quick question. Is there any way to dynamically change the MAX PV allowed for a VG? Or do I have to fully recreate a new VG with new specifications??
Example:

VG Name /dev/vg08
VG Write Access read/write
VG Status available, exclusive
Max LV 255
Cur LV 23
Open LV 23
Max PV 16
Cur PV 16
Act PV 16

I want to make MAX PV 64. Is there a way to do this W/O having to recreate a whole new VG??

THanks in advance!

Re: Dynamically Change MAX PV allowed for a VG

Fern H2O — Tue, 02 Jun 2009 13:08:33 GMT

BTW.

I'm running on an Itanium HP-UX 11.23 box.

Re: Dynamically Change MAX PV allowed for a VG

Rita C Workman — Tue, 02 Jun 2009 13:15:37 GMT

Each version offers different LVM options.

This doc should help you (vgmodify):

http://docs.hp.com/en/vgmodify/vgmodify_wp_modified_final.pdf

/rcw

Re: Dynamically Change MAX PV allowed for a VG

James R. Ferguson — Tue, 02 Jun 2009 13:18:34 GMT

Hi:

You can use the new 'vgmodify' command in lieu of recreating the volume group.

If you are running 11.31 you have the command. If you are running 11.23 you need patch PHCO_38717.

If your are running anything less than 11.23 you need to recreate the volume group from scratch.

Regards!

...JRF...

Re: Dynamically Change MAX PV allowed for a VG

Sunny123_1 — Tue, 02 Jun 2009 13:25:52 GMT

Hi

You can use vgmodify command for that you need patch PHCO_38717.Then use man command to know in details.

Regards
Sunny

Re: Dynamically Change MAX PV allowed for a VG

Fern H2O — Tue, 02 Jun 2009 13:32:35 GMT

Thank You Rita & James, You 2 nailed it!

I read the manual and I would really LOVE to test out that command vgmodify, hopefully management won't think it's to risky.

Thanks Again!