topic Re: Increasing Max PV in Operating System - HP-UX

Increasing Max PV

Jim Naylor — Fri, 25 Aug 2006 11:39:17 GMT

Is there still a restiction on HP-UX 11.0 to increase the maximum number of physical volumes? Do you still have to backup data and re-create the volume group?

Re: Increasing Max PV

James R. Ferguson — Fri, 25 Aug 2006 11:41:50 GMT

Hi Jim:

Once 'vgcreate'd, the geometry of a volume group specified by 'pe_size', 'max_pv', 'max_pe' and 'max_lv' cannot be changed without backing up any data and destroying and recreating the volume group.

Regards!

...JRF...

Re: Increasing Max PV

IT_2007 — Fri, 25 Aug 2006 11:43:21 GMT

you can't do it without destroying it. Take backup and create new vg with required specifications and copy data.

Re: Increasing Max PV

inventsekar_1 — Fri, 25 Aug 2006 13:13:36 GMT

Is there still a restiction on HP-UX 11.0 to increase the maximum number of physical volumes? ---while creating the VG or when a VG is already there?

if the VG is already there--> the above response.

if u r going to create VG-->

man vgcreate

-p max_pv Set the maximum number of physical volumes
that the volume group is allowed to contain.
The default value for max_pv is 16. The
maximum number of physical volumes can be a
value in the range 1 to 255.

SYNOPSIS
/usr/sbin/vgcreate [-f] [-A autobackup] [-x extensibility] [-e max_pe]
[-l max_lv] [-p max_pv] [-s pe_size] [-g pvg_name] vg_name
pv_path ...

Re: Increasing Max PV

sathish kannan — Sat, 26 Aug 2006 08:27:58 GMT

Hi Jim,
Yes, if it is a exisiting volume group. These parameters are defined defined while creating VG.

Regards
Sathish

Re: Increasing Max PV

siva baskaran — Sat, 26 Aug 2006 10:28:01 GMT

hi to all,
just be good will don't thing abt begative point of view, just thing on postive mind, but don't forget to analysis the defectives to make it positive, like wise i telling that

use the pvmove cmd to move particular pv to some other without taking backup, get more solution also for it, there will be option to do same, that what we are Admin.

thanks
siva

Re: Increasing Max PV

Jim Naylor — Tue, 29 Aug 2006 11:41:34 GMT

Thanks for the responses.