Upgrading to Integrity VM Version 4.0 from 3.X

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– No layered software should be installed on the host other than that needed to manage the
system or the virtual machines on the system.
– It must be acceptable for the Integrity VM installation process to configure the system
specifically for virtual machines performance
– Ensure that there is enough disk space for root file systems.
– You must be able to reboot production guests.
– You must be able to update older guests to supported versions of guest operating systems
(See HP Integrity Virtual Machines Version 4.0 Installation, Configuration, and Administration.)
– You must have at least 1 GB of memory available
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(to handle increased host memory usage)
Migration Strategies
There are two general strategies for upgrading:
 Update (preserves VM Host settings and configuration)
 Cold Migration (clean, simple way to resize root volumes and/or get a clean installation of
the VM host)
As stated above, the update strategy means that virtual machines (guests) and other system
configuration information is preserved. Unfortunately, due to Operating Environment growth, the file
systems in the root volume group (/, /stand, /var, /usr, /tmp, /opt, and /home) are quite likely to
need to be extended prior to the update
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.
A cold migration strategy requires that you save the key configuration information (/var/opt/hpvm/
and various files in /etc/rc.config.d/) to an external device or system. It can be restored once the
migration is completed to recreate the VM guest configurations.
These are further discussed in the rest of this document.
Migration Decisions
Starting with an older version of Integrity VM, you must answer two fundamental questions:
1. Can the hardware in question support 11iv3?
2. Is it feasible/desirable to use Update-UX or must a “cold migration
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” be used? In other words, is it
simpler to keep all of the configuration files and manually handle any necessary file system
extensions, or is it preferable to save key configuration data and start with a clean disk? (Note that
saving and restoring /var/opt/hpvm/* will completely restore the virtual machine definitions and
configurations.)
Figure 1 provides an overview of the two strategies:
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When all Virtual Machines are running, the command hpvmstatus –s must show at least 1 GB of memory is available.
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According to the HP-UX 11i v3 Installation and Update Guide, September, 2008, the space requirements are:
 / 1GB
 /stand 1.75GB
 /var 4.5GB
 /tmp .5GB
 /opt 7.4GB
 /home 112MB
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Cold migration – the process of using Ignite-UX to install a new OS image to a new boot disk, and then importing all of the data/application
disks.