HP Integrity Virtual Machines Installation, Configuration, and Administration Version A.03.50

— changer
— burner
• adapter-type can be scsi or avio_stor on an HP-UX 11i v2 guest (0505 or later).
• hardware-address or scsi:pcibus,pcislot:,scsitgt (optional) specifies the virtual device
PCI bus number, PCI slot number, and SCSI target number. If you do not specify this
information, it is generated automatically. HP recommends that you allow the hardware
address to be generated automatically. To omit the hardware address, use the following
format (including two colons):
device::VM-Host-storage-specification
• VM-Host-storage-specification defines where and how the virtual machine storage
is supplied on the VM Host. Specify it using the following format:
storage:location
Where storage is one of the following:
— disk
— lv
— file
— null
— attach
And location is a VM Host system file.
NOTE: Only HP-UX guests can use AVIO, and the backing store can be only disk or volume.
There is no attached AVIO device support, and guests can be only disk or DVD.
For complete information about constructing storage specifications for virtual machines, see
Section 7.2.2.1 (page 91).
The type of VM Host backing store can affect the performance of the virtual machine. Use the
ioscan command to obtain information about the current device configuration on the VM Host
system, and try to distribute the workload of the virtual machines across the physical backing
stores.
When you share a physical backing storage device among virtual machines. potential conflicts
are not always obvious. For example, if you use a file in a file system on /dev/dsk/c8t2d0 as
a backing store, the raw device (/dev/rdsk/c8t2d0) cannot also be used as a backing store.
For more information about specifying virtual devices, see Chapter 7 (page 81).
Integrity VM checks the current physical configuration when you create a virtual machine using
the hpvmcreate command. If the virtual machine uses backing stores that are not available, the
virtual machine is created, and warning messages provide details. If you use the hpvmstart
command to start a virtual machine that requires physical resources that are not available on the
VM Host system, the virtual machine is not allowed to start, and error messages provide detailed
information about the problem.
After you create a virtual machine, you can use the hpvmmodify command to add, remove, or
modify storage devices for the virtual machine. To add a device to an exising virtual machine,
include the —a option, the same way you would on an hpvmcreate command. For example,
the following command modifies the virtual machine named compass1, adding a virtual DVD
device backed by the physical disk device /c1t1d2. The virtual hardware address is omitted
and will be generated automatically.
# hpvmmodify -P compass1 -a dvd:scsi::disk:/dev/rdsk/c1t1d2
You can modify storage devices while the virtual machine is running. It is not necessary to restart
the virtual machine; however, it may be necessary to rescan for devices on the virtual machine.
36 Creating Virtual Machines