HP Integrity Virtual Machines Release Notes

5 Using Integrity VM Commands
This section contains notes about the Integrity VM commands.
5.1 Using hpvmmodify -N -s Options Together Causes Guest to Be
Inaccessable
Using the hpvmmodify -N and -s options together can cause the guest to disappear from the
hpvmstatus output and become inaccessible. The guest directory name is erroneously changed,
but the guest configuration files still have the original guest names.
To correct this problem, change the guest name back to the original guest name using the following
command:
# mv /var/opt/hpvm/guest/guest_new_name /var/opt/hpvm/guest/guest_original_name
5.2 The hpvmmodify Command Reevaluates Guest Configurations
When you use the hpvmmodify command to modify a guest, the entire guest configuration is
reevaluated. Any problems that might prevent the guest from starting are reported. For example,
if a guest has a reference to a host device that no longer exists, and you enter an hpvmmodify
command that modifies the guest but does not fix the bad reference, a warning message is
generated.
5.3 The hpvmdevmgmt Command Truncates File Sizes
When you use the -S option on the hpvmdevmgmt command to create a file to be used as a
virtual device, you can specify the file size. The file size must be specified in whole integers.
Anything after the initial whole integer is ignored. For instance, both the hpvmdevmgmt -S 1G
command and the hpvmdevmgmt -S 1.5G command create a 1 GB file.
5.4 Setting Devices to Sharable Can Lead to Device Conflicts
Integrity VM allows Virtual FileDVDs to be shared by guests. With HP Serviceguard, you can
share Virtual Disks. Other types of storage devices are not supported for sharing and cannot be
allocated to multiple guests. Be careful when you set a virtual device to sharable using the
hpvmdevmgmt command. Incorrectly marking a virtual device as sharable can lead to device
conflicts and data corruption if multiple guests access it concurrently. In particular, attached
devices (tape, burner, or changer) should not be made sharable.
5.5 Errors on Displaying Guest or Vswitch Information While that
Information is Being Modified
The hpvmstatus, hpvmmodify, hpvmcreate, hpvmclone, and hpvmremove commands
might return the following error when another command accesses the same guest's configuration
files at the same time:
hpvm_guest_get_state:103:No Guest by that name or number
If you receive this error when you try to display a guest or vswitch configuration, enter the
command again.
5.6 Do Not Attempt to Remove Busy Virtual Devices
Before removing virtual devices with the hpvmmodify command, make sure that the guest
operating system is no longer directing I/O to the device. Unmount the device if it is mounted.
If you attempt to remove a device that has I/O in progress, the hpvmmodify command incorrectly
removes the device from the guest configuration file. The hpvmstatus command no longer
5.1 Using hpvmmodify -N -s Options Together Causes Guest to Be Inaccessable 33