topic Re: Guest-to-host disk mapping in Operating System - HP-UX

Guest-to-host disk mapping

helsayed — Wed, 17 Mar 2010 19:11:29 GMT

Hello all,
Is there any way to map the WWID of the disks inside a VM to the corresponding WWID of the disk in the host server ?

Re: Guest-to-host disk mapping

Steven E. Protter — Wed, 17 Mar 2010 19:14:00 GMT

Shalom,

Assuming you are working with hpvm, the guests do not have access to the wwn at all.

What you might think is a wwn from ioscan output is not accurate.

That information is available based on my testing only in the guest machine.

To provide that information, you would need to have the host machine do a scripted report and write to a shared disk location.

SEP

Re: Guest-to-host disk mapping

helsayed — Wed, 17 Mar 2010 19:18:04 GMT

Hellow Steven,
i'm not quite sure what do you mean by a shared disk ?
By the way i have access to both host and guest machine given that the host is hpux 11iv3 and guest is 11iv2

Re: Guest-to-host disk mapping

Tim Nelson — Wed, 17 Mar 2010 19:28:00 GMT

A shorter version of SEP's response.

No.

( and I believe the shared disk mentioned was an NFS mount to both servers that could hold some type of report information)

There are a number of ways to easily distinguish which device is presented to each VM.

e.g.
use lv based backingstore with a meaningfull names

use hpvmdevmgmt commands on VMHost to determine which devices relate to the HW address on the VMGuest.

and probably many more creative ways...