HP-UX vPars and Integrity VM V6.3 Administrator Guide

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 or DVD using the appropriate IN and EJ commands. When the media is loaded, you can
proceed with the installation.
NOTE: The hpvmmodify command might fail to change a Virtual FileDVD if the device is 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, required
by the hpvmmodify command to change a Virtual FileDVD, use the hpvmstatus -D command.
6.4.2.3.6 Virtual NullDVDs
A Virtual NullDVD is an emulated SCSI DVD-ROM with no virtual media present. The next media
selection might come from a VSP CD or DVD drive or VSP ISO file, depending on how the Virtual
NullDVD is configured. After the next media is selected, the Virtual NullDVD turns into either a
Virtual DVD (see Section 6.4.2.3.4 (page 81)) or a Virtual FileDVD (see Section 6.4.2.3.5
(page 83)) 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 VSP administrator
gives to the guest administrator. Virtual DVD changes can be initiated from the virtual console (see
Section 6.5.1.2 (page 92)). All virtual DVD changes by the guest administrator are constrained
by the actions of the VSP administrator.
If the VSP administrator gives access to the guest administrator to load and unload physical media
on the VSP CD or DVD drive, the Virtual NullDVD can be set up with the following form of the
resource specification:
dvd:avio_stor::null:/dev/rdisk/disk#
where /dev/rdisk/disk# is an HP-UX esdisk character device file that points to the VSP CD
or DVD drive.
This is the same as setting up a Virtual DVD (see Section 6.4.2.3.4 (page 81)), except that the
VSP CD or DVD might not contain media. The media is expected to come from the guest
administrator, who should have access to the VSP 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:avio_stor::null:/dev/rdisk/disk7.
If the VSP administrator does not want to give rights to the guest administrator to access the VSP
CD or DVD drive, you can set up a Virtual NullDVD to a file system directory containing the ISO
files that the guest administrator wants to access. Following is the resource statement form:
dvd:avio_stor::null:/pathname
where /pathname is the file system directory where the ISO files are located.
This is the same as setting up a Virtual FileDVD (see Section 6.4.2.3.5 (page 83)), except that the
file is not specified. By specifying a file directory, the guest administrator can choose the ISO files
84 Storage devices