Re: Change vg00 vg version (409 Views)
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Frequent Advisor
uxbeginner22
Posts: 37
Registered: ‎11-25-2013
Message 1 of 7 (460 Views)

Change vg00 vg version

Is possible to change vg00 version?

I want to migrate a system from 1.0 to 2.2

I try booting in maintenance mode

i can change a vg(not vg00) with root mounted

If i try to change vg00,is impossible because

usr is a vg00 volume.

Someone know an howto for install or change vg00

to version 2.2?

Thanks

Honored Contributor
Bill Hassell
Posts: 14,210
Registered: ‎05-29-2000
Message 2 of 7 (415 Views)

Re: Change vg00 vg version

[ Edited ]

 

The first question is: why would you want to do this?

 

vg00 is quite unique in that is is not just the root volume, but it is attached to the boot, swap and dump areas, all of which are tied to either the processor boot code or very low level HP-UX code associated with crash handling.

 

From the vgversion man page:

 

         Volume group versions 2.2 and higher do support root, boot, swap,
         and dump.  But the vgversion command currently does not support the
         migration of a volume group version 1.0 with bootable physical
         volumes to version 2.2 or higher in the HP-UX 11i v3 March 2010
         Update.

 What is unclear in this doc is whether it is currently supported with the latest (2013) update.

 

However, the biggest issue is for vg00 recovery. Ignite cannot create a vg00 2.x VG. And if the reason to migrate to version 2.2 is so you can have a petabyte sized vg00, that is a big misunderstanding of how to manage vg00. vg00 is the OS, config files, libraries and product installation. Keeping massive amounts of data in vg00 will negate any perceived value in having just one VG for the entire system. And then there's the big issue with backup tools such as Data Protector, Netbackup, etc.

 

And even if HP does update vgversion (and HP-UX and crash dump tools and swap code and and Service Guard, and vPars, and...) to allow for version 2.2, I would not recommend moving that direction unless you have time (several days) to test implementation, compatibility and bare-metal recovery before any movement into production.

 

 

 

 

 

 

Honored Contributor
likid0
Posts: 981
Registered: ‎03-01-2005
Message 3 of 7 (409 Views)

Re: Change vg00 vg version

Hi,

 

Never tried it, but you could try  with a ignite backup/restore, take a make_*_recovery, then in advance settings before you restore your image in ignite check if you can select vg00 version 2.2.

 

"Ignite-UX now supports boot, dump, swap and data volumes for LVM volume group version 2.2 for HP-UX 11iv3, as well as the earlier version 1.0."

 

 

http://h20565.www2.hp.com/portal/site/hpsc/template.BINARYPORTLET/public/kb/docDisplay/resource.proc...

Windows?, no thanks
Frequent Advisor
uxbeginner22
Posts: 37
Registered: ‎11-25-2013
Message 4 of 7 (375 Views)

Re: Change vg00 vg version

I have made tape_recovery

but when i try to load vgversion give me error.

Load vgdisplay works but

 

./vgdisplay 
/sbin/sh: ./vgdisplay:  not found

 I try sbin/vgdisplay,give me same error

Frequent Advisor
uxbeginner22
Posts: 37
Registered: ‎11-25-2013
Message 5 of 7 (364 Views)

Re: Change vg00 vg version

The newest hpux installer allow to create a vg00 2.2

,i want to use this for one reason: lvm snapshots :)

 

Acclaimed Contributor
Torsten.
Posts: 23,375
Registered: ‎10-02-2001
Message 6 of 7 (355 Views)

Re: Change vg00 vg version

I never worked with LVM snapshots.

 

After you did your tests, could you please tell if you can boot from such snapshot?

 

If this doesn't work, consider to stay with DRD.


Hope this helps!
Regards
Torsten.

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Frequent Advisor
uxbeginner22
Posts: 37
Registered: ‎11-25-2013
Message 7 of 7 (349 Views)

Re: Change vg00 vg version

I use snapshot for backup
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