topic Re: HPUX - 11iv2 and using vgmodify in Operating System - HP-UX

HPUX - 11iv2 and using vgmodify

Tom Haddad — Wed, 06 Oct 2010 11:09:05 GMT

I had an earlier thread on this issue but want to re-address it.
I have a 11iv2 host and I want to increase the max_pv. The VG is in exclusive status (and is part of a serviceguard package).
here my understanding as I reading a document on this and the steps to run
1. vgchange -c n /dev/vggroup
2. vgmodify -p xxxx /dev/vggroup
3. vgchange -c y /dev/vggroup

I think the vgmodify will de-activate the vggroup (vgchange -a n ..) then reactive it when done??!!

Anyone clarify the steps??!

Re: HPUX - 11iv2 and using vgmodify

AnthonySN — Wed, 06 Oct 2010 11:46:07 GMT

attached is a good document from HP

Re: HPUX - 11iv2 and using vgmodify

Kenan Erdey — Wed, 06 Oct 2010 11:46:37 GMT

Hi,

no you must manually de-activate by halting package.

> first halt the package that uses vg.
1. vgchange -c n /dev/vggroup
2. vgmodify -p xxxx /dev/vggroup
3. vgchange -c y /dev/vggroup
> run the package.

Re: HPUX - 11iv2 and using vgmodify

Tom Haddad — Wed, 06 Oct 2010 11:53:55 GMT

Thanks Kenan...
I see what you are saying..
Does the VGMODIFY deactivate/reactivate with LVM (vgchange -a n/y)as part of its process??

Re: HPUX - 11iv2 and using vgmodify

Kenan Erdey — Wed, 06 Oct 2010 11:57:16 GMT

No, it does not. as you are using hp-ux v2 you must halt the package, you cannot do this online.

Re: HPUX - 11iv2 and using vgmodify

Hakki Aydin Ucar — Wed, 06 Oct 2010 12:06:04 GMT

>SASJ put a good document, I also want to address a full vgmodify document;
http://docs.hp.com/en/B2355-60130/vgmodify.1M.html

-p max_pv

Set the maximum number of physical volumes that the volume group is allowed to contain (see vgcreate(1M) -p). The maximum number of physical volumes can range from the current number of physical volumes in the volume group to 255.

The -t option displays a table of possible max_pv values for vg_name.

Re: HPUX - 11iv2 and using vgmodify

AnthonySN — Wed, 06 Oct 2010 12:06:32 GMT

when a package is halted the lvols are umounted and vg is deactivated as part of halting the package.

Re: HPUX - 11iv2 and using vgmodify

Tom Haddad — Wed, 06 Oct 2010 12:07:32 GMT

Thanks to all..
WIll plan my changes accordingly.
Document is very helpful.

Re: HPUX - 11iv2 and using vgmodify

Dennis Handly — Fri, 04 Oct 2013 20:53:57 GMT

>I had an earlier thread on this issue but want to re-address it.

Your previous thread:
http://h30499.www3.hp.com/t5/System-Administration/Vgmodify-HPUX-11iv2-systems/m-p/5257124

Re: HPUX - 11iv2 and using vgmodify

Tom Haddad — Thu, 21 Oct 2010 19:22:46 GMT

i was able to document your info and refer to the HP document that you supplied..thanks