topic Re: EMC Power Path in Operating System - HP-UX

EMC Power Path

Bedare Nikhil — Tue, 07 Jul 2009 09:58:07 GMT

Hi everybody,
Need some help on EMC Power Path on HP unix.
I have installed the EMCPP on a hp machine which has Veritas volume manager also.
HOw to initialise the disks using EMCPP so that the disks are seen under the control of EMCPP ?

Thanks in advance.

Re: EMC Power Path

Steven E. Protter — Tue, 07 Jul 2009 10:11:36 GMT

Shalom,

It would help to know the version of Power Path. The model of the HP-UX system. The Version of HP-UX.

Maybe this document will help:
http://www.emc.com/microsites/clariion-support/pdf/300-005-166.pdf

Could you perhaps share the document you are using?

SEP

Re: EMC Power Path

Michal Kapalka (mikap) — Tue, 07 Jul 2009 10:15:17 GMT

hi,

powermt config

powermt display dev=all

mikap

Re: EMC Power Path

SUDHAKAR_18 — Tue, 07 Jul 2009 10:22:56 GMT

1)Assign the LUNS to the server(from storage).
2) #ioscan -fnC disk
3) #insf -e
4) powermt config
5) powermt save
6) powermt display
7) powermt display dev=all
use the c*t*d* from powermt output and use this on LVM / VXVM.

Re: EMC Power Path

Bedare Nikhil — Tue, 07 Jul 2009 10:30:29 GMT

Thanks for the reply.
However,still some issues :
First I assigned external disks from clariion array[multiple paths] to my HP 11.23 machine.
Then installed the EMCPP 5.1 on the machine.
ioscan -C disk shows the disks properly but powermt display dev=all shows initialization error as I didnt reboot the machine after installing EMCPP.If I reboot the machine,it just hangs after "Starting EMC Powerpath "

Any suggestions ?

Re: EMC Power Path

Michal Kapalka (mikap) — Tue, 07 Jul 2009 10:33:14 GMT

hi,

you should reboot the machine because during the installation is a kernel modification required.

mikap

Re: EMC Power Path

SUDHAKAR_18 — Tue, 07 Jul 2009 10:36:55 GMT

use #powermt restore if o/p is showing errors.

Normally EMC powerpath will take time during booting.

I hope you are using PA machine.

Re: EMC Power Path

Michal Kapalka (mikap) — Tue, 07 Jul 2009 10:48:52 GMT

hi,

on a IA-64 ( hp-ux 11.23 ), the boot takes some minutes, this was the reason why we don't upgraded it on our system.

mikap

Re: EMC Power Path

Bedare Nikhil — Tue, 07 Jul 2009 10:53:47 GMT

Any idea how much time will it take normally to boot up after installing EMCPP ?

Re: EMC Power Path

SUDHAKAR_18 — Tue, 07 Jul 2009 10:58:27 GMT

Hi Nikhil,

In my RP8420 servers, its taking 10min.

Re: EMC Power Path

Michal Kapalka (mikap) — Tue, 07 Jul 2009 11:03:41 GMT

hi,

if you have a account on powerlink.emc.com

check this "Install PowerPath 5.1.0 Hot Fix 4 causes boot sequence to increase." in the knowledge base.

mikap