HP Integrity Virtual Machines Installation, Configuration, and Administration

devices, attached devices can be attached and detached dynamically across active virtual machines
(see Section 7.3: “Using Integrity VM Storage” (page 92)). Also, as the device is being attached
to a virtual machine, it cannot be opened by the VM Host at the time of or during attachment.
Because tapes, media changers, and CD/DVD burners are not virtualized, media changes with
them must be done physically. Therefore, all media changes with attached devices must be done
by individuals with access to that physical storage. Changes to attached devices may require the
device to be unlocked from an active guest OS. Attached devices remain in the last lock state the
guest OS put it in when the device is detached or the virtual machine is shut down. Empty devices
are attached and are not locked.
No multipath solutions are available for attached devices on the VM Host. No multipath products
are supported in the virtual machine.
Manage attached devices to prevent the wrong virtual machines from viewing sensitive
information. You can display which virtual machines are currently using attached devices using
the hpvmstatus command.
7.3 Using Integrity VM Storage
The following sections describe the roles of individuals accessing virtual storage, the commands
they use, and some examples of using Integrity VM storage.
7.3.1 Integrity VM Storage Roles
This section describes the roles that individuals play in working with Integrity VM storage. Each
role has different responsibilities in using Integrity VM storage. The roles may be played by one
or more individuals depending on security requirements and skill sets. The three roles are:
• Section 7.3.1.1: “VM Host Administrator” (page 92)
• Section 7.3.1.2: “Guest Administrator” (page 93)
• Section 7.3.1.3: “Guest User” (page 93)
7.3.1.1 VM Host Administrator
The VM Host administrator role is an individual responsible for the proper configuration and
maintenance of the VM Host for running virtual machines. As such, this person needs complete
access to the VM Host to install hardware and software. This person also needs to understand
how to do HP-UX system maintenance, how to configure hardware properly, and how to set up
and use various software applications and tools.
The VM Host administrator uses the following commands to manage virtual machine storage
devices:
Integrity VM CommandManagement Function
hpvmmodify (see Section 3.4: “Changing Virtual Machine
Configurations” (page 36))
Add, delete, manage, and modify virtual machine storage
devices
hpvmstatus (see Section 9.1: “Monitoring Guests”
(page 113))
Display information about the storage devices for a virtual
machine.
Once a resource is added or attached to a virtual machine and the virtual machine is powered
on, the storage resource is owned by the guest administrator. That is, the guest OS may access
that storage resource at any time. A deletion, detachment or modification fails if any guest I/O
is active on the resource. Dynamic storage changes on an active virtual machine must be approved
by the guest administrator.
92 Creating Virtual Storage Devices