HP Integrity Virtual Machines Version 4.2 Release Notes

8.2.3 Agile Device Name Recommendations
The Integrity VM commands supports mass storage agile device names. Use of agile device
names (with the exception of attached devices using avio_stor, which uses the hardware path)
for configuring storage devices is highly recommended as it provides VM Host multipathing
benefits.
8.2.4 Configuration Limits
A guest can have up to 158 LUNs — 128 AVIO and 30 VIO. A guest can have a maximum of 30
file backing stores, including both AVIO and VIO.
8.2.5 Using USB CD/DVD Devices
With VIO (scsi adapter type), USB CD/DVD devices are not supported for use as attachable
media. AVIO (avio_stor adapter type) supports USB 2.0 DVD burners. Hardware supportability
requirements for Integrity VM are described in the HP Integrity Virtual Machines Installation,
Configuration, and Administration manual.
To identify USB CD/DVD devices, use the ioscan -fun command.
NOTE: Because Integrity VM may do four to six calls to open() on a DVD when accessing it,
and hpvmcreate or hpvmmodify command might take more than a minute to complete when
there is no media in the drive. Example commands that could appear to hang are:
# hpvmcreate -P guest -a dvd:scsi::disk:/dev/rdisk/disk5
# hpvmcreate -P guest -a dvd:scsi::null:/dev/rdisk/disk5
# hpvmmodify -P guest -a dvd:scsi::disk:/dev/rdisk/disk5
# hpvmmodify -P guest -a dvd:scsi::null:/dev/rdisk/disk5
8.2.6 The sam Command might Display Incorrect Number of Disks and Paths on an
HP-UX 11i v2 Guest
The number of disks displayed by the sam command using “Sam Areas->Disks and File
Systems->Disk Devices” might be incorrect. The number of paths displayed for a device might
also be incorrect. This problem exists on disks configured under both SCSI and AVIO storage
adapters. ioscan displays all the disks correctly.
For example, the following are the sam output and theioscan output on the same HP-UX 11i
v2 guest:
"Disk Devices" window in sam(1M) shows the following disks and number of paths:
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xDisk Devices 0 of 8 selectedx
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
x Hardware Number Volume Total x
x Path of Paths Use Group Mbytes Description x
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
xx 0/0/2/0.0.0 2 VxFS/Swap -- 70007 HP Virtual x
xx 0/0/5/0.0.0 1 Unused -- 69504 HP Virtual x
xx 0/0/5/0.1.0 2 Unused -- 70007 HP Virtual x
xx 0/0/5/0.2.0 2 Unused -- 70007 HP Virtual x
xx 0/0/6/0.3.0 1 Unused -- 70007 HP Virtual x
xx 0/0/6/0.4.0 1 Unused -- 70007 HP Virtual x
"ioscan -kfnC disk" shows the following disks:
Class I H/W Path Driver S/W State H/W Type Description
=======================================================================
disk 15 0/0/2/0.0.0 sdisk CLAIMED DEVICE HP Virtual Disk
/dev/dsk/c0t0d0 /dev/rdsk/c0t0d0
/dev/dsk/c0t0d0s1 /dev/rdsk/c0t0d0s1
/dev/dsk/c0t0d0s2 /dev/rdsk/c0t0d0s2
8.2 Known Issues and Information 77