topic Re: Vg problem max PV in Operating System - HP-UX

Vg problem max PV

gigiz — Thu, 23 Mar 2006 10:59:08 GMT

Hallo ,
I have a problem with my Vg :

--- Volume groups ---
VG Name /dev/vgdb
VG Write Access read/write
VG Status available, exclusive
Max LV 255
Cur LV 2
Open LV 2
Max PV 41
Cur PV 41
Act PV 41
Max PE per PV 17263
VGDA 82
PE Size (Mbytes) 32
Total PE 88437
Alloc PE 81672
Free PE 6765
Total PVG 1
Total Spare PVs 0
Total Spare PVs in use 0

I want to say if a parameter "Max PV" can be modify and how to modify it ...

Re: Vg problem max PV

James R. Ferguson — Thu, 23 Mar 2006 11:01:19 GMT

Hi:

Sorry, once a volume group is created, you can't modify its 'pv_max', 'max_pe', 'pe_size' nor 'max_lv' without recreating it. Plan ahead is the axiom here.

Regards!

...JRF...

Re: Vg problem max PV

Doug O'Leary — Thu, 23 Mar 2006 11:19:12 GMT

Hey;

Generally, true; you should pump that parameter up when generating vgs in the first place.

I usually use:

vgcreate -l 255 -p 64 -s 8 -e 10000 ${vg} ${pvs[*]}

That, so far, has given some good flexibility.

All that being said, I have seen several posts that tell about an unsupported HP script that will allow you to modify preexisting vg parameters. You apparently have to open a tt w/HP to get it and then promise you won't sue them if you use it...

Doug

Re: Vg problem max PV

Jeff Schussele — Thu, 23 Mar 2006 11:24:14 GMT

Hi,

Sorry - it can't be done.
Once it's set at creation, it's set forever.
The only way to change is backup the data, destroy the VG and rebuild a new one specifically setting the value(s) on the vgcreate command line.

Rgds,
Jeff

Re: Vg problem max PV

gigiz — Thu, 23 Mar 2006 12:13:55 GMT

OK
I search a unofficial script

Re: Vg problem max PV

elsaesser, thomas — Fri, 24 Mar 2006 03:23:35 GMT

You can use vgmodify tool from HP.
It's an unsupported Tool. I think it's only
supported if a HP stuff do the action with this tool.
see attachment
Kind Regards

Thomas Elsaesser