Compaq AlphaServer GS140 Manual de servicio

AlphaServer GS140Getting Started with Logical PartitionsOrder Number: EK–TUNLP–SFThis document describes the hardware configuration rules andthe conso

1-2 Getting Started with Logical Partitions1.1 Reasons for PartitioningPartitioning can be used for various reasons, including theconsolidation of

Introduction 1-3With logical partitioning, you can divide computing resources into as many asthree distinct partitions. Partitioning can be used f

1-4 Getting Started with Logical Partitions1.2 Important Considerations for Partitioned SystemsHere are some important considerations for partition

Introduction 1-5There are some important things to be aware of when running multipleinstances of operating systems on separate partitions on AlphaS

1-6 Getting Started with Logical Partitions1.3 Overview of the Partitioning ProcessTo define logical partitions, you need to check the hardwareconf

Introduction 1-7There are hardware, firmware, and software requirements and restrictions tomeet before you can run logical partitions. Chapter 2 d

Configuration Rules 2-1Chapter 2Configuration RulesTo define logical partitions for AlphaServer GS140 systems, you must havecertain hardware. Other

2-2 Getting Started with Logical Partitions2.1 Overview of Configuration RequirementsHere are the minimum and maximum configurations for partitione

Configuration Rules 2-3Table 2–1 lists the minimum requirements and maximum restrictions for threelogical partitions; Table 2–2, for two partitions.

First Printing, May 1999The information in this publication is subject to change without notice.COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TE

2-4 Getting Started with Logical Partitions2.2 Example of a Partitioned SystemThese illustrations give an overview of some of the interplay between

Configuration Rules 2-5Figures 2–1 and 2–2 show an example of an AlphaServer GS140 system withthree CPUs, three memories, and three I/O modules. Th

2-6 Getting Started with Logical Partitions2.3 Module ConfigurationPartitions are constructed of a number of CPUs, memory, and I/Omodules. Each p

Configuration Rules 2-7Logical partitions are divided on hardware module boundaries. For example,each CPU module contains 2 CPUs, but you cannot ha

2-8 Getting Started with Logical Partitions2.4 Memory Allocation2.4.1 Two PartitionsThe console firmware assigns memory to partitions such that an

Configuration Rules 2-9When you are defining two partitions, you may have from two to five memorymodules, depending on the number of CPU and I/O mod

2-10 Getting Started with Logical Partitions2.4.2 Three PartitionsThree-partition systems require at least three memory modules. Eachpartition i

Configuration Rules 2-11When you are defining three partitions, three memory modules are alwaysneeded. They may or may not be of the same size. Fig

2-12 Getting Started with Logical Partitions2.5 DWLPB PCI Card Cages and Hose ConnectionsOne DWLPB PCI card cage is required for each secondary par

Configuration Rules 2-13Each AlphaServer GS140 system may have a DWLPB PCI card cage with eithera KFE70 adapter (standard I/O) or a KFE72-EA adapter

iiiContentsPreface viiChapter 1 Introduction1.1 Reasons for Partitioning 1-21.2 Important Considerations for Partitioned Systems 1-41.3 Overview

2-14 Getting Started with Logical Partitions2.6 KFE72-DA Adapters and Attached ConsoleTerminalsOne KFE72-DA adapter is required for each logical pa

Configuration Rules 2-15The connection for the primary console terminal is on the control panel on thefront of the machine. This connection is show

2-16 Getting Started with Logical Partitions2.7 CD-ROM Drives for Secondary PartitionsThe CD-ROM drive for partition 0 is located near the control

Configuration Rules 2-17You can install one RRD46/47-VA CD-ROM drive for each secondary partitionin your system, if, for example, you have no networ

2-18 Getting Started with Logical Partitions2.8 Attaching Floppy Drives for Secondary Partitions(Optional)You may wish to install floppy drives on

Configuration Rules 2-19You may install a floppy drive off of the floppy drive port on the connectormodule of the KFE72-DA (in front panel slot 2 of

2-20 Getting Started with Logical Partitions2.9 Moving One Floppy Drive Between Partitions(Optional)Your configuration may include only one floppy

Configuration Rules 2-21If you need to run configuration utilities from various partitions, and have onlyone floppy drive, you can attach it to sepa

Environment Variables that Create Logical Partitions 3-1Chapter 3Environment Variables that CreateLogical PartitionsYou define what resources are a

iv4.4 Step 3: Set and Initialize Environment Variables,Boot/Install from Secondary Consoles 4-10Chapter 5 Tips and Troubleshooting5.1 Setting auto_ac

3-2 Getting Started with Logical Partitions3.1 Environment Variables UsedFour environment variables and the lpinit command define partitions.Figure

Environment Variables that Create Logical Partitions 3-3You define values for one environment variable to define the number of logicalpartitions on

3-4 Getting Started with Logical Partitions3.2 Detailed Directions for lp_cpu_maskThe lp_cpu_mask environment variable is set to a value that creat

Environment Variables that Create Logical Partitions 3-5Note that you must assign CPUs to a partition on module boundaries. CPUmodules can be assi

3-6 Getting Started with Logical PartitionsFigure 3–3 Construction of Two-Partition CPU Bit Masks13 12 11 10 9 8 7 6 5 4 3 2 1 0Bit No.

Environment Variables that Create Logical Partitions 3-7Two-Partition SystemA two-partition system has more possibilities for CPU allocation. From

3-8 Getting Started with Logical Partitions3.3 Detailed Instructions for lp_io_maskThe lp_io_mask environment variable is set to a hexadecimal mask

Environment Variables that Create Logical Partitions 3-9Two-partition-systems may have two or three I/O modules. Figure 3–5 gives two examples of

Setting Up, Initializing, and Booting Logical Partitions 4-1Chapter 4Setting Up, Initializing, and BootingLogical PartitionsThe sequence of console

v3-1 Environment Variables and lpinit Command 3-23-2 Construction of Three-Partition CPU Bit Mask 3-43-3 Construction of Two-Partition CPU Bit Masks 3

4-2 Getting Started with Logical Partitions4.1 Primary Console: Check ConfigurationBefore you define any partitions, check to make sure you have a

Setting Up, Initializing, and Booting Logical Partitions 4-3From the primary console terminal, check the configuration. You can do thiseither from

4-4 Getting Started with Logical PartitionsExample 4–1 Check Configuration from Primary Console (Continued)P00>>> sho config ➊

Setting Up, Initializing, and Booting Logical Partitions 4-5Example 4–1 Check Configuration from Primary Console (Continued) C8 PCI connected to

4-6 Getting Started with Logical Partitions4.2 Step 1: Create and Initialize EnvironmentVariables from the Primary ConsoleCreate (or set) a series

Setting Up, Initializing, and Booting Logical Partitions 4-7Begin to define logical partitions by issuing commands from the primary consoleterminal.

4-8 Getting Started with Logical Partitions4.3 Step 2: Initialize Partitions from the PrimaryConsole; Boot/Install OS in Partition 0Initialize part

Setting Up, Initializing, and Booting Logical Partitions 4-9Following the system reset, you are still issuing commands at the primaryconsole. Perfo

4-10 Getting Started with Logical Partitions4.4 Step 3: Set and Initialize Environment Variables,Boot from Secondary ConsolesFrom each secondary co

Setting Up, Initializing, and Booting Logical Partitions 4-11Once lpinit is executed from the primary console, initialization displays appearat the

Tips and Troubleshooting 5-1Chapter 5Tips and TroubleshootingThis chapter describes some things you may want to do after you have definedand initial

5-2 Getting Started with Logical Partitions5.1 Setting auto_action Within PartitionsHere are some tips on setting the auto_action environment variab

Tips and Troubleshooting 5-3In general, it is reasonable practice to set auto_action to halt in each partitionwhen you are first starting up logical

5-4 Getting Started with Logical Partitions5.2 How to Stop a Hung PartitionYou can halt a hung operating system instance in partition 0 by typingCtr

Tips and Troubleshooting 5-5CAUTION: It is always recommended practice to shut down the operatingsystem before attempting to halt a partition. This

5-6 Getting Started with Logical Partitions5.3 Halting All Partitions to ReconfigureYou may wish to change the allocations set with the lp_* environ

Tips and Troubleshooting 5-7➊Shut down the operating system, using a command such as this one, at eachof the primary and secondary console terminals

5-8 Getting Started with Logical Partitions5.4 Correcting Errors in Environment VariablesIt is easy enough to make a mistake in setting bit masks fo

Tips and Troubleshooting 5-9Continuing from the previous section, where the console firmware revealed thatCPUs 2 and 3 were not assigned to any part

viiPrefaceIntended AudienceThis manual is written for anyone wishing to understand the concepts andrequirements of logical partitions for a Compaq Alp

5-10 Getting Started with Logical Partitions5.5 Using Tools to Debug a PartitionYou can analyze crash dumps and run DECevent from a partition whileo

Tips and Troubleshooting 5-11A partition can crash, while other partitions remain up and running. You canuse the same tools to debug the problem pa

Index-1IndexAAuto_action environment variable,4-7, 4-11, 5-2BBoot_osflags environment variable,4-11Boot_reset environment variable,4-7Bootdef_dev envi

Index-2Llp_count, 3-4lp_cpu_mask, 3-4, 3-5, 3-6lp_io_mask, 3-4, 3-9, 3-10lp_mem_mode, 3-4Lpinit command, 3-2, 4-9MMemory allocationtwo partitions, 2-8

viiiDocumentation TitlesTable 1 lists the books in the AlphaServer GS140 documentation set andoperating system documentation that you may find useful.

Introduction 1-1Chapter 1IntroductionPartitioning is defined as the capability to run multiple copies, or instances, ofan operating system on one h