HP vPars and Integrity Virtual Machines V6.1 Administrator Guide

NOTE: When a DVD without a disk in the drive is added to a guest, specify the backing store
type of null, for example:
# hpvmmodify -P guest -a dvd:avio_stor::null:/dev/rdisk/disk#
Run ioscan on the booted guest if the guest if running HP-UX.
If an empty DVD drive is given the backing store type disk, the following example shows the
result:
# hpvmmodify -P testguest -a dvd:avio_stor::disk:/dev/rdisk/disk31
hpvmmodify: WARNING (testguest): DVD or burner: '/dev/rdisk/disk31' currently has no disk. This device may not
show up or be usable by the guest when booted.
If a guest boots when configured with a DVD using the disk backing store type when there is no
disk in the drive, the guest kit utility command hpvmdevinfo (available for HP-UX guests) might
return the following type of results:
# hpvmdevinfo
hpvmdevinfo: Error converting (0,0,1): Error 0
Device Type Bus,Device,Target Backing Store Type Host Device Name Virtual Machine Device
Name
=========== ================= ================== ================ ===========================
disk [0,0,0] disk /dev/rdisk/c2t0d0 /dev/rdisk/c0t0d0
dvd [0,0,1] disk /dev/rdisk/disk31 ??
The following results indicate a problem of an empty DVD drive:
• The "Error converting (0,0,1): Error 0" message
• The "??" string in the field for the virtual machine's device name
Output appears for the dvd , because it is stored as part of the guest configuration on the VSP.
However, because there is no disk in the drive, the drive itself is not virtualized as a device within
the guest. Also note that the DVD drive does not show up in ioscan output in the guest.
9.3.1.4 Guest user
The guest user runs applications on a guest OS. Access is provided and limited by the guest
administrator. There are no Integrity VM storage requirements for application users of the guest
OS.
There are no Integrity VM storage commands for application users in the guest OS. The guest users
use Integrity VM storage on the guest OS the same way as they normally use storage on an HP
Integrity server. Any required Integrity VM storage changes must be directed to the guest
administrator or VSP administrator.
9.3.2 Storage use cases
This subsection describes ways to use the vPar/VM storage commands.
9.3.2.1 Adding virtual storage devices
A VSP administrator adds or attaches vPar/VM storage using the hpvmstatus and hpvmmodify
commands. Virtual storage devices can be added or attached while the vPar/VM is powered on
or off. A new virtual storage adapter can be added only when the vPar/VM is off. The virtual
storage adapter can have up to 128 AVIO devices total (the number of virtual and attached
devices.)
The process to add or attach a virtual storage device to a guest is as follows:
136 Creating virtual storage devices