HP Integrity Virtual Machines 4.3: Installation, Configuration, Administration

To prevent media conflicts, you must manage Virtual FileDVDs carefully (see Section 6.2.1.4
(page 99)). You can see where the file system directory where the ISO file resides using the guest's
virtual console. To simplify accounting, allocate file directories from complete logical volumes
or whole disks.
A Virtual FileDVD reverts to its original resource statement when the guest shuts down or
reboots. Therefore, after you install a guest from multiple CDs or DVDs, you must reload the
Virtual FileDVD when the guest reboots to complete the installation. Stop the automatic EFI
reboot and insert the CD/DVD using the appropriate IN and EJ commands. When the media is
loaded, proceed with the installation.
NOTE: The hpvmmodify command might fail to change a Virtual FileDVD if the device has
already been modified by the virtual console. The hpvmstatus command displays the current
status of the Virtual FileDVD, which might not be in its original resource state. To see the original
resource statement, which is required by the hpvmmodify command to change a Virtual FileDVD,
use the hpvmstatus -D command.
6.2.2.3.6 Virtual NullDVDs
A Virtual NullDVD is an emulated SCSI DVD-ROM with no virtual media currently present.
The next media selection may come from a VM Host CD/DVD drive or VM Host ISO file,
depending on how the Virtual NullDVD is configured. Once the next media is selected, the
Virtual NullDVD turns into either a Virtual DVD (see Section 6.2.2.3.4 (page 107)) or a Virtual
FileDVD (see Section 6.2.2.3.5 (page 108)) device. As such, a Virtual NullDVD is a transitory state
of an empty virtual DVD type.
The choice of how to configure a Virtual NullDVD depends on the access that the VM Host
administrator gives to the guest administrator. Virtual DVD changes can be initiated from the
virtual console (see Section 6.3.1.3 (page 115)). All virtual DVD changes by the guest administrator
are constrainted by the actions of the VM Host administrator.
If the VM Host administrator gives access to the guest administrator to load and unload physical
media on the VM Host CD/DVD drive, the Virtual NullDVD can be set up with the following
form of the resource specification:
dvd:scsi::null:/dev/rdisk/disk#
where /dev/rdisk/disk# is an HP-UX esdisk character device file that points to the VM
Host CD/DVD drive. The legacy sdisk device file, /dev/rdsk/cXtYdZ, may also be used.
This is the same as setting up a Virtual DVD (see Section 6.2.2.3.4 (page 107)), except that the VM
Host CD/DVD might not contain media. The media is expected to come from the guest
administrator, who should have access to the VM Host to make such physical media changes.
For example:
# ioscan -NfunC disk
disk 7 64000/0xfa00/0x6 esdisk CLAIMED DEVICE
TEAC DW-224E
/dev/disk/disk7 /dev/rdisk/disk7
# diskinfo /dev/rdisk/disk7
SCSI describe of /dev/rdisk/disk7:
vendor: TEAC
product id: DW-224E
type: CD-ROM
size: 0 Kbytes
bytes per sector: 0
In this example, the Virtual NullDVD resource statement is
dvd:scsi::null:/dev/rdisk/disk7.
6.2 Configuring Integrity VM Storage 109