topic Re: Virtual DVD problem in Operating System - HP-UX

Virtual DVD problem

shabash — Mon, 02 Mar 2009 07:44:24 GMT

i have 4 VMs installed on one rx6600.
Now i am facing problem when using dvd media.

whenever i need a dvd i have to add the path for specific vm.

is there any easy way that after putting the media in host the all media is accessible to all vms??

when i try to add path in second VMs it give me error "backing device not exit"

Question is do i need to add same path in all vms if it is then why its giving error.??

i know One Vm can access the data at a time but why again and again path adding and removing required for VMs to access DVD

Re: Virtual DVD problem

Torsten. — Mon, 02 Mar 2009 11:58:54 GMT

Configure the physical drive as virtual null dvd (shared) to all your VMs, if you need to insert a media, use the vMPs "insert" command.

Re: Virtual DVD problem

likid0 — Mon, 02 Mar 2009 12:07:49 GMT

Just to follow up Torsten:

And example of a null dvd config:

I have all my iso images in:
/var/opt/iso-images/

#hpvmstatus -P vm -d
dvd:scsi:0,2,1:null:/var/opt/iso-images/

when you need to mount a dvd, from the mp on the vm.

[vm] vMP:CM> ma

vMP MAIN MENU

CO: Console
CM: Command Menu
CL: Console Log
SL: Show Event Logs
VM: Virtual Machine Menu
HE: Main Help Menu
X: Exit Connection

[vm] vMP> in

Insertable Guest Devices
Num Hw-path (Bus,Slot,Tgt) Gdev
--------------------------------------------
[1] 0/0/2/0.1.0 (0,2,1) dvd

Enter menu item number or [Q] to Quit: 1

Insertable File Backing Stores
Num File
---------------------
[1] boot_helper.iso

Enter menu item number or [Q] to Quit: 1

Confirm insertion action
G - Go
F - Force

Enter menu item or [Q] to Quit: G

Re: Virtual DVD problem

Avinash20 — Mon, 02 Mar 2009 17:34:42 GMT

Hi,

I believe this doc will help you

http://docs.hp.com/en/T2767-90105/ch07s02.html#virtual_dvd_device

Please assign points to your threads

Re: Virtual DVD problem

shabash — Tue, 03 Mar 2009 04:48:26 GMT

I have another question regarding storage presented from EVA.
i have one single port fiber card used in host machine and all VMs installed on it.
Now All VMs using the storage from EVA.

when running the command ioscan -fnC disk
only 2 path showing from HSV.
i have added storage using one path.

Now i am looking for alternate path for the virtual machine i.e coming from EVA controller.

can i add another path with virtual machine.

if i do then can i make it alternate boot path??

Re: Virtual DVD problem

Torsten. — Tue, 03 Mar 2009 05:17:33 GMT

Are you using raw disks as backing store?

HPVM version B.04.00 will handle this.

For earlier versions you need multipathing software.

Re: Virtual DVD problem

shabash — Tue, 03 Mar 2009 07:37:59 GMT

Thx for reply.

Torsten your help indeed always very helpful.
yes B.04 installed evaluation version.

so now i can add the another path from EVA and make it alternate bootable right???

Re: Virtual DVD problem

Avinash20 — Tue, 03 Mar 2009 08:01:15 GMT

Yes.. Noted its 11.31 OS.

Re: Virtual DVD problem

Torsten. — Tue, 03 Mar 2009 10:23:56 GMT

Please provide your configuration details:

# hpvmstatus -P

Re: Virtual DVD problem

Eric SAUBIGNAC — Tue, 03 Mar 2009 16:40:08 GMT

Bonjour shabash,

as far as I know, begining with HPVM 2.0, you can't have an alternate path presented to a VM in order to use pvlink in the VM to configure LVM and/or have an alternate boot path for the VM. Anyway, hpvmcreate/hpvmmodify will complain if you try to add such a path.

As previously said you must rely on multipating at VM Host level.

If you are working with HPVM 4.0, VM Host should be 11.31. In this case instead of using raw devices like /dev/rdsk/cXtYdZ, use new permanent DSF like /dev/rdisk/diskXX for the VM. Multipathing is a native feature of Permanent DSF

Eric