HP Integrity Virtual Machines 4.3: Installation, Configuration, Administration

supported versions. Install the backup (client) agents on the VM Host and the guests. HP
highly recommends that the /var and /opt directories, in addition to the standard locations,
be backed up regularly on the VM Host system. Do not use the VM Host system as a backup
server. For more information, see the HP-UX 11i v2 Installation and Update Guide.
• Using HP GlancePlus/iX to monitor guests
You can use Glance on the VM Host to monitor guest data, but recorded measurements can
be misleading. Glance receives the CPU accounting information from the guest kernel.
Because the VM Host can take the guest processor away (for example, when a hardware
interrupt occurs), the time spent running other guests is reported for the state that the guest
was in at the time the CPU was taken away. For more information about using Glance, see
glance(1M).
Glance 4.6 or later is supported running in a VM Host or in a guest; however, certain
measurements might not apply in a particular context or report limited results. For example,
measuring CPU utilization on the VM Host reports all the time spent running in guests as
"system time"; to receive "user time" or "nice time" for a given guest, you must run Glance
in that guest. Similarly, memory-related faults, or system calls for a guest, are not visible
from Glance running in the VM Host, from Glance running in that guest. Glance also offers
a number of virtualization-related measurements. Note, Glance refers to virtual machines
as logical systems.
• Using HP Global Workload Manager (gWLM)
If you use gWLM within Insight Dynamics — VSE to manage virtual machines, when you
upgrade the VM Host, make sure the gWLM agent on that host is running gWLM A.02.50
or greater. Also, the managing Insight Dynamics — VSE Central Management Station (CMS)
must be running A.02.50 or greater, as described in the HP Insight Dynamics —VSE 6.0:
Integrity CMS Installation and Configuration Guide. To upgrade the VM Host, use the following
procedure:
1. Remove the gWLM agent using the following command:
# swremove gWLM-Agent
2. Upgrade Integrity VM as described in the HP Integrity Virtual Machines 4.3: Installation,
Configuration, and Administration manual.
3. Upgrade the gWLM agent, as described in the HP Insight Dynamics — VSE 6.2: Integrity
CMS Installation and Configuration Guide.
If you install the current version of Integrity VM without upgrading to gWLM A.02.50 or
later, and then attempt to use gWLM within Insight Dynamics — VSE to manage virtual
machines, the following error is reported:
Error acquiring workload management lock. Look in the the file
/var/opt/gwlm/gwlmagent.log.0 on hostname for more details.
NOTE: You can use gWLM on the VM Host, but to manage iCAP resources. gWLM is the
workload management solution for managing resource allocation to virtual machines.
• Using the HP Integrity Virtual Machines Manager (VMMgr)
The VMMgr product provides a graphical user interface (GUI) for Integrity VM. It is available
from either of the following management interfaces:
1.6 Do Not Install Applications on the VM Host System 23