Upgrading to Integrity VM Version 4.0 from 3.X

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A Technical White Paper

Introduction......................................................................................................................................... 2

Upgrade Process Overview................................................................................................................... 2

Migration Restrictions ....................................................................................................................... 2

Migration Strategies ......................................................................................................................... 3

Migration Decisions ......................................................................................................................... 3

Pre-Upgrade Preparation Steps.............................................................................................................. 5

Preparing the Integrity server from a Hardware / Firmware Perspective.................................................. 5

Performing Basic Preparations ........................................................................................................... 5

Cold Migration Steps ........................................................................................................................... 6

Update Steps ...................................................................................................................................... 7

Adjusting Root File Systems ............................................................................................................... 8

Getting and Running Update-UX ........................................................................................................ 9

Running hpvmdevtranslate............................................................................................................... 10

Issues with the DVD drive and 64K Base Page Size ............................................................................... 10

If the Guests won’t Start...................................................................................................................... 11

Special Considerations for Serviceguard: Rolling Updates ...................................................................... 12

Rolling updates for Guests as Serviceguard Packages......................................................................... 14

Rolling upgrades for Guests as Serviceguard Cluster Nodes................................................................ 14

Final Preparations for Production Mode................................................................................................ 15

References ........................................................................................................................................ 16

Summary of content (16 pages)

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Upgrading to Integrity VM Version 4.0 from 3.X A Technical White Paper Introduction......................................................................................................................................... 2 Upgrade Process Overview................................................................................................................... 2 Migration Restrictions .......................................................................................................................
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Introduction Integrity Virtual Machines is a soft partitioning and virtualization technology that provides operating system isolation, with sub-CPU allocation granularity and shared I/O. You can install Integrity VM on an Integrity server or hardware partition (nPartition) running HP-UX.
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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.
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Figure 1. Strategies Overview Once you’ve selected your upgrade approach, you need to choose the appropriate Operating Environment (OE). HP-UX 11i v3 is now available in a variety of OEs: – Base OE, which is roughly equivalent to 11i v2’s “Foundation OE” and “Technical Computing OE”. Anyone who has purchased update services and who currently has either of those operating environments has the right to receive this. – High Availability OE, which is roughly equivalent to 11i v2’s Mission Critical OE.
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Pre-Upgrade Preparation Steps Preparing the Integrity server from a Hardware / Firmware Perspective Before beginning the migration, read the documents HP-UX 11i v3 Read Before Installing or Updating, and HP-UX 11i v3 Installation and Update Guide (September 2008 (Update 3) versions or later) to understand the base requirements of HP-UX itself. Also check HP Integrity Virtual Machines Version 4.0 Installation, Configuration, and Administration (available at http://docs.hp.
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– Run vgexport(1M) on all non-root LVM volume groups, particularly if you plan to do a cold migration. You can either do this directly via the command line, or you can use the Disks and File Systems tools in the System Management Homepage (SMH) application. This will save all of the LVM meta-data and allow you to access all of the logical volumes after the cold install. All of these Integrity VM specific steps are fully documented in HP Integrity Virtual Machines Version 4.
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–  T2787AC Virtualization Manager (this is not the Virtual Machines Manager, but part of the VSE Management Suite) You can select the following: – Serviceguard and/or performance monitoring and error handling/diagnostics software. If you installed the Operating Environment without Integrity VM (by using the Base OE, for instance), insert the Application Release (AR) media, and use swinstall to install the Integrity VM software.
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Figure 4. Update Steps Once you’ve completed all of the preparation steps, start the update process from either media or a network depot. When you do so, please bear in mind:  If you are updating to either the VSE-OE or the Data Center OE (recommended), then you should update T2767BC(OE) - Integrity VM at the same time. Update-ux detects the presence of Integrity VM and auto-selects it, but it never hurts to explicitly request it.
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http://docs.hp.com. You can also find a guide to using DRD there – Using the DRD Toolset to Extend the /stand File System in an LVM Environment. Getting and Running Update-UX Once you’ve performed all the preparation steps (backups created, guests shut down, file system sizes confirmed, etc.), get the appropriate version of update-ux. This software is always on the Operating Environment media (and in OE depots) in the bundle Update-UX (case is mandatory).
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Running hpvmdevtranslate This script produces a new script that modifies the backing devices for all existing guests. There are patches available6 for the script, so it is critical that you check the ITRC for Integrity VM patches prior to this step. For example: hpvmdevtranslate -a /var/opt/hpvm/common/hpvm_mgmtdb_pre1131 This command produces the script /var/opt/hpvm/common/hpvm_dev_convert, which must be reviewed and edited (there is an exit statement at the beginning).
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The workaround is to either use network depots, thus avoiding the DVD drive, or to temporarily reduce the kernel tunable parameter base_pagesize to 4K, do your installations, and then restore the parameter to 64K. Here is an example of using the workaround to install Integrity VM from the VSE-OE media after the host has already been migrated to HP-UX 11i v3: 1. Install VMKernelSW (and any other desired bundles) from DVD #1: # swinstall -x autoreboot=true -s VMKernelSW 2.
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If the return code is 0, then virtual partitions are running. They should be removed with the swremove command. Special Considerations for Serviceguard: Rolling Updates There are two ways that Integrity VM guests can be integrated with Serviceguard. The first way is for the entire guest to be treated as a single “package”. In this configuration, the VM hosts are cluster nodes and the guest instance is restarted on a different host in the event of failure.
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Table 1: Serviceguard and Integrity VM Support Integrity VM Release A.01.20 A.02.00 A.03.00 A.03.50 (Dec 2007) A.04.00 (2H08) – – 11iv2 host support 11iv3 host support only only VMs as SG packages SG release SG release SG release SG release SG release A.11.16 A.11.16 A.11.16 A.11.16 A.11.18 A.11.17 A.11.17 A.11.17 A.11.17 w/ SMS A.01.007 A.11.17 w/ SMS A.01.007 A.11.17 w/ SMS A.01.007 A.11.18 w/ SMS A.02.007 A.11.18 A.11.18 A.11.18 w/ SMS A.01.017 A.11.18 w/ SMS A.01.
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Rolling updates for Guests as Serviceguard Packages When the guests are packages, the host upgrade is a combination of the standard Serviceguard rolling update (see Managing Serviceguard for a full description) combined with the Integrity VM specific steps outlined earlier in this document. Here is the modified sequence of operations: 1. Make sure all guests boot before any update. Perform the Pre-Upgrade Preparation Steps detailed above, and backup the guests and host. 2.
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Figure 8. Virtual Machine guest as a Serviceguard Cluster node VM Guest 1 Serviceguard Cluster VM Host 1 VM Guest 2 VM Host 2 3. Shutdown the guests and update (or cold migrate) the OS, Integrity VM and Serviceguard software on the host. (Note that if the cluster is already running Serviceguard 11.18, no update to the Serviceguard software will be required). Refer to the Cold Migration Steps and/or Update Steps sections above. 4. Check the ITRC and install any relevant patches. 5.
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References 1. See http://docs.hp.com/en/oshpux11iv3.html#HP%20Integrity%20Virtual%20Machines for the HP Integrity Virtual Machines Version 4.0 Installation, Configuration, and Administration. 2. See http://docs.hp.com/en/oshpux11iv3.html#Release%20Notes for the HP-UX 11i Version 3 Release Notes. 3. See http://docs.hp.com/en/oshpux11iv3.html#System%20Firmware for minimum required firmware versions. 4. See http://docs.hp.com/en/oshpux11iv3.html#Ignite-UX for the Ignite-UX Administration Guide. 5.