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The HP Virtual Server Environment : Virtual Partition Example Scenario (part 1)

2/16/2015 3:47:15 AM

The purpose of this scenario is to demonstrate the power and flexibility provided by Virtual Partitions. The scenario begins with an overview that outlines the steps that are generally required when deploying vPars. It then describes the environment in which Virtual Partitions will be deployed. Proper planning of the virtual partition configuration greatly eases the implementation; therefore, a few tips and suggestions are provided to facilitate the planning process. Next, the sequence of creating and booting the initial virtual partition is described. After the first virtual partition is running, the second vPar is created and booted from an Ignite-UX server. With two vPars running HP-UX, a shell script is written to illustrate the dynamic capabilities of vPars. Finally, the shell script is added as a scheduled task using the cron tool, which results in the dynamic reconfiguration of the system based on the timing of workload utilization peaks.

It should be noted that portions of command output shown throughout this example have been modified for formatting purposes and to provide additional clarity.

Example Scenario Overview

This example scenario consists of the following steps. These steps are covered in detail throughout the example scenario. There are many possible ways to deploy vPars, and the intent of this example is to illustrate just one of them.

1.
Determine the Virtual Partition Environment

This step encompasses choosing where vPars will be installed, determining how many vPars will be deployed, and deciding the initial configuration of the vPars. In this example, two vPars will be deployed on an nPartition with four CPUs.

2.
Plan for Virtual Partitions

This step involves capturing the hardware configuration of the system where vPars will be deployed. Most important aspect of this phase is capturing the output of ioscan for I/O configuration purposes.

3.
Install Virtual Partition Software

This step consists of installing the Virtual Partitions software on the instance of HP-UX where the first vPar will be created. In this example, HP-UX is already running on the nPartition where the first vPars will be booted so the installation of the Virtual Partitions software is performed in the same way traditional HP-UX software bundles are installed.

4.
Create the First vPar

After installing the vPar software, the first vPar can be created. The vPar command-line interface is used to create Virtual Partitions.

5.
Boot the Virtual Partition Monitor

After creating the first vPar, it must be booted. In order to boot a vPar, the virtual partition monitor must be loaded. The vPar monitor is loaded by shutting down the operating system running in the server and then booting the vPar monitor from the firmware interface in much the same way the HP-UX kernel is loaded.

6.
Load the First Virtual Partition

Having loaded the virtual partition monitor, a text-based interface is available for performing various vPar tasks, such as loading vPars. Loading a vPar starts the HP-UX boot process as it would traditionally be performed from the firmware interface.

7.
Create the Second Virtual Partition

The next step is to create the second vPar. This step involves using the vPar command-line interface from within the first vPar to create the second vPar.

8.
Boot the Second Virtual Partition

Booting the second vPar is a bit simpler than booting the first one because the vPar monitor is already running. As a result, a command can be issued from the first vPar to boot the second vPar. In fact, as is shown in this example, the second vPar can be directed to boot directly from an Ignite-UX server.

9.
Configure vPars to Automatically Boot

After creating and booting both vPars, there are steps that must be performed in order for all of the vPars to be booted automatically.

10.
Automate the CPU migration

The final step in this scenario involves an elementary example of how CPUs can be automatically migrated from on vPar to another.
Other  
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