topic Re: Mirroring root partition in Operating System - HP-UX

Mirroring root partition

Robert Peregrin — Sun, 18 Jul 2010 11:15:41 GMT

We will be doing a disk mirroring in one of the HP Servers in STC. Kindly advise if the attached procedure is correct.

Iâ m having problem trying to identify which volume group will be used for the root, boot, swap and dump. So I was not able to complete the procedure for this part:

# lvextend â r
# lvextend â b
# lvextend â s
# lvextend â d

Attached is the RMS Server disk info for your reference.

Regards,

Robert Peregrin
BTC Networks

Re: Mirroring root partition

AnthonySN — Sun, 18 Jul 2010 11:21:35 GMT

note that the procedure for root disk mirroring is different for parisc and itanium.

your root disk volume group is vg00

Re: Mirroring root partition

Robert Peregrin — Sun, 18 Jul 2010 11:46:34 GMT

Yes the root partition is vg00.

Is there a command to verify if the server is parisc or itanium?

Re: Mirroring root partition

AnthonySN — Sun, 18 Jul 2010 11:57:20 GMT

what is your server model
post the output of
model and uname -a
if ur model starts with RPxxxx then its pa-risc if RXxxxx then itanium.

Re: Mirroring root partition

Robert Peregrin — Sun, 18 Jul 2010 12:09:41 GMT

Here it is:

s7dmc # uname -a
HP-UX s7dmc B.11.11 U 9000/800 3617756966 unlimited-user license

s7dmc # model
9000/800/rp4440

Re: Mirroring root partition

AnthonySN — Sun, 18 Jul 2010 12:10:48 GMT

it is a PA-RISC system

Re: Mirroring root partition

singh sanjeev — Sun, 18 Jul 2010 15:51:25 GMT

>>IÃ¢Â Â m having problem trying to identify which volume group will be used for the root, boot, swap and dump.

i think you looking for command "lvlnboot" to identify the logical volumes.

#man lvlnboot

Re: Mirroring root partition

Suraj K Sankari — Sun, 18 Jul 2010 16:09:31 GMT

Hi,

See the attached file go to page 48 Appendix D for "Mirroring the Root Volume"

Suraj

Re: Mirroring root partition

Abid Iqbal — Tue, 27 Jul 2010 10:43:55 GMT

Hi,
Find attached "mirror_script".
How to run? >> Do 'ioscnan -fnC disk'
Copy the (cxtxdx) path of mirror disk and run command.
./mirror_script cxtxdx

Re: Mirroring root partition

Robert Peregrin — Wed, 28 Jul 2010 05:59:08 GMT

Thanks guys. I will check it on Saturday and feed you back.

Re: Mirroring root partition

Robert Peregrin — Sat, 07 Aug 2010 11:58:19 GMT

Hi,

I still don't get the idea on which logical volume to use for root, swap, boot and dump.

Regards,

Robert Peregrin

Re: Mirroring root partition

Torsten. — Sun, 08 Aug 2010 03:32:58 GMT

Run

# lvlnboot -v vg00

to get this information.

Now use

# lvlnboot -r|-b|-d|-s ...

to write this information to the new disk too.

Re: Mirroring root partition

Robert Peregrin — Sun, 08 Aug 2010 08:41:56 GMT

Thanks Torsten. I now found what I was looking for.

Re: Mirroring root partition

Robert Peregrin — Tue, 10 Aug 2010 06:19:30 GMT

Hi Torsten,

One more question. What does "/usr/sbin/lvlnboot -R" do?

Regards,

Robert Peregrin

Re: Mirroring root partition

AnthonySN — Tue, 10 Aug 2010 06:27:27 GMT

lvlnboot -R /dev/vg00
Recover any missing links to all of the logical volumes

Re: Mirroring root partition

Robert Peregrin — Tue, 10 Aug 2010 07:58:56 GMT

Thanks SASJ.

Re: Mirroring root partition

Robert Peregrin — Tue, 10 Aug 2010 08:00:39 GMT

Thanks Guys. the mirroring procedure is now clear to me.