HP Integrity Virtual Machines Release Notes

6.7 Restoring the NVRAM for Windows Guests
When a guest has been terminated unexpectedly due to a panic or another critical condition, the
guest's boot settings (which are stored in a per-guest NVRAM file on the VM Host) can become
corrupted. This can cause problems with subsequent reboots of that guest. To correct the problem,
copy the file /opt/hpvm/guest-images/common/nvram to
/var/opt/hpvm/guests/vm_name/nvram on the VM Host system. This procedure restores
the copy of the NVRAM that was used when the guest was created. Then you can used the EFI
Boot Manager to recreate the guest's boot path and other data. (The installed guest's operating
system should be intact and unaffected by the corruption.)
To build the EFI Boot Menu Entry for Windows Enterprise:
1. From the Boot Maintenance options, select the boot device and enter the following command:
fs0> ls \EFI\Microsoft\WINNT50
Look for the Bootxxxx filename.
2. Change to the MSUtil directory. For example:
fs0> cd \MSUtil
3. Enter the following command:
fs0:> nvrboot
4. Enter the I command to import the Windows boot entry. Then enter the correct location of
the boot entry. For example:
\EFI\Microsoft\WINNT50\Bootxxxx
6.8 How to Stop Guests
To stop a guest, HP recommends that you perform an operating system shutdown from a
privileged account on the guest. If the guest is not responding, use the hpvmstop -g command
on the VM Host. Do not stop a guest by killing the hpvmapp process.
6.9 The hpvmconsole pc –cycle Command Occasionally Doesn’t Complete
If the guest hpvmconsole pc –cycle command doesn’t complete and restart the guest, enter
Ctrl/B to interrupt the command and then press Enter to return to the virtual console. Exit the
virtual console by entering the X command. At the VM Host command prompt, enter the following
command to start the guest:
# hpvmstart –P guestname
6.10 How to Recover from a Guest Hang
If a guest hangs, use Ctrl/B to enter the virtual console. Enter the tc command to reset the guest.
The guest captures a memory dump of the machine state, which can be used later for offline
diagnosis. Do not kill the guest from the VM Host or use the virtual console to power down a
hung guest. Doing so can corrupt the guest file system.
6.11 Using HP Serviceguard to Manage Guests
This section lists release notes specific to using Serviceguard in the Integrity VM environment.
Do not attempt to use guests as Serviceguard packages and guests as Serviceguard nodes at the
same time on the same VM Host system.
You can install HP Serviceguard A.11.16 or 11.17 on the VM Host or on the HP-UX guest. You
can install HP Serviceguard 11.18 only on guests running HP-UX 11i v3.
6.7 Restoring the NVRAM for Windows Guests 39