Partitioning for Linux

ERserver Partitioning for Linux  ERserver Partitioning for Linux  Sixth Edition (April 2005) This edition applies to IBM AIX 5L Version 5.3 and to version 5, release 3, modification 0 of IBM i5/OS (product number 5722-SS1) and to all subsequent releases and modifications until otherwise indicated in new editions. This version does not run on all reduced instruction set computer (RISC) models nor does it run on CISC models. © Copyright International Business Machines Corporation 2004, 2005. All rights reserved. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents Scenario: Configuring an IBM eServer OpenPower Chapter 1. Partitioning for Linux . . . .1 710 system with Linux on two logical partitions using virtual I/O . . . . . . . . . . . .39 Chapter 2. What’s new . . . . . . . .3 Prerequisites . . . . . . . . . . . . .40 Preparing your system . . . . . . . . . .40 Chapter 3. Printable PDFs . . . . . . .7 Using the HMC to set up and configure your server . . . . . . . . . . . . . . .41 Chapter 4. Concepts for partitioning the Install Linux . . . . . . . . . . . . .48 Appendix 1: Resource allocation . . . . . .50 server . . . . . . . . . . . . . . .9 Scenario: Creating a Linux logical partition and Logical partition overview . . . . . . . . . .9 partition profile . . . . . . . . . . . . .52 Benefits of partitioning . . . . . . . . . .11 Scenario: Using partition profiles . . . . . . .52 Types of logical partition configurations . . . . .12 system profiles . . . . . . . .54 Manufacturing default configuration . . . . .12 Scenario: Capacity on Demand for Linux . . . .57 Service partition . . . . . . . . . . . .13 Server consolidation . . . . . . . .57 Virtual I/O Server partition . . . . . . . .14 i5/OS on IBM eServer p5 servers . . . . . .14 Components of a partitioned system . . . . . .16 Chapter 7. Planning for Linux logical Managed systems . . . . . . . . . . .16 partitions . . . . . . . . . . . . . .59 Profiles . . . . . . . . . . . . . . .17 Hardware resources . . . . . . . . . . .19 Chapter 8. Configuring Linux logical Minimum hardware configuration requirements partitions . . . . . . . . . . . . . .61 for logical partitions . . . . . . . . . .19 Creating logical partitions and partition profiles . .61 Minimum configuration requirements for a Linux Cr additional partition profiles . . . . . .62 partition . . . . . . . . . . . . . .19 Creating logical partitions from the manufacturing Physical and virtual hardware resources . . . .20 default configuration or from the nonpartitioned Virtual adapters . . . . . . . . . . . .20 configuration . . . . . . . . . . . . . .62 How each OS implements virtual resources . . .22 Creating logical partitions from the Processors . . . . . . . . . . . . . .22 manufacturing default configuration or from the Memory . . . . . . . . . . . . . .26 nonpartitioned configuration on an IBM eServer requirements for Linux logical partitions 27 i5 server . . . . . . . . . . . . . .63 Expansion unit . . . . . . . . . . . .27 Creating logical partitions from the Console options for logical partitions . . . . .28 manufacturing default configuration or from the I/O devices . . . . . . . . . . . . . .28 nonpartitioned configuration on an IBM eServer Communications options for logical partitions . . .29 p5 server . . . . . . . . . . . . . .66 Virtual Ethernet . . . . . . . . . . . .29 Creating logical partitions from the Logical partition utilities . . . . . . . . . .30 manufacturing default configuration or the LPAR Validation Tool . . . . . . . . . .30 nonpartitioned configuration on an OpenPower server . . . . . . . . . . . . . . .69 Chapter 5. Concepts for Linux logical Migrating a Linux installation . . . . . . . .71 partitions . . . . . . . . . . . . . .31 a Linux from an existing Hardware requirements for Linux logical partitions 31 iSeries to IBM eServer i5 . . . . . . . . .72 Supported hardware resources for Linux logical Migrating a Linux installation from pSeries to partitions . . . . . . . . . . . . . .31 IBM eServer p5 . . . . . . . . . . . .72 Shared processor support for Linux logical Copying a partition profile . . . . . . . . .72 partitions . . . . . . . . . . . . . .34 Creating a system profile . . . . . . . . . .73 Console requirements for Linux logical partitions 34 Copying a profile . . . . . . . . . .73 Storage options for Linux logical partitions . . .35 Creating a Linux logical partition using i5/OS Virtual I/O devices . . . . . . . . . . . .35 virtual I/O resources . . . . . . . . . . .73 Communications options for Linux logical partitions 35 Creating a network server description and a Linux distributions . . . . . . . . . . . .37 network-server storage space for a Linux logical partition . . . . . . . . . . . . . .74 Chapter 6. Scenarios for Linux logical Connecting to the virtual console for a Linux logical partition . . . . . . . . . . . .76 partitions . . . . . . . . . . . . . .39 Starting and stopping the network server description for a Linux logical partition . . . .77 © Copyright IBM Corp. 2004, 2005 iii Backing up and recovering Linux . . . . . .94 Chapter 9. Managing Linux logical partitions . . . . . . . . . . . . . .79 Chapter 10. Using Linux installed on a Managing partition profiles for logical partitions . .79 Activating a partition profile . . . . . . .80 logical partition . . . . . . . . . . .97 Changing profile properties . . . . .80 Restarting and shutting down Linux in a logical Deleting a partition profile . . . . . . . .80 partition . . . . . . . . . . . . . . .97 Managing system profiles for logical partitions . .81 Using the Hardware Management Console to Activating a system profile . . . . . . . .81 shut down Linux logical partitions . . . . .97 Deleting a profile . . . . . . . . .81 Using the Hardware Console to Managing partitions remotely . . . . . . . .81 restart Linux logical partitions . . . . . . .98 Dynamically managing Linux logical partition resources . . . . . . . . . . . . . . .82 Chapter 11. Troubleshooting Linux managing physical I/O devices and logical partitions . . . . . . . . . . 101 slots on Linux . . . . . . . . . . . . .82 Dynamically managing processing power on Linux 84 Chapter 12. Related information for Managing logical-partition and operating-system Linux logical partitions . . . . . . . 103 security . . . . . . . . . . . . . . . .85 Application support . . . . . . . . . . .86 Samba with i5/OS Netserver . . . . .86 Appendix. Notices . . . . . . . . . 105 Accessing i5/OS data using Linux ODBC driver 86 Trademarks . . . . . . . . . . . . . . 107 Backing up and recovering Linux installations . . .86 Terms and conditions for downloading and Backing up and r Linux logical printing information . . . . . . . . . . . 107 partitions that use i5/OS virtual I/O resources .87 Backing up the network server description and virtual disk drives associated with a Linux logical partition . . . . . . . . . . . .90 iv Partitioning for Linux Chapter 1. Partitioning for Linux The process of getting Linux up and running on IBM eServer hardware begins with Planning for Linux ™ logical partitions. If you already have Linux for POWER installed on IBM eServer hardware, you may want to proceed to Migrating a Linux installation ® ™ ™ In order to use logical partitions on an IBM eServer OpenPower system, you need the appropriate Advanced OpenPower Virtualization technologies activated in your system’s Hardware Management Console What’s new Use this information to see the new or significantly changed enhancements to Linux partitioning. Printable PDFs If you prefer a hardcopy version of this information, go here to print the PDF. General concepts for partitioning the server Use this information to learn more about logical partitions on IBM eServer hardware. Concepts for Linux logical partitions Use this information to learn important concepts pertinent to logical partitioning for Linux. Scenarios for Linux logical partitions Use this information to understand related functions for Linux logical partitions. Planning for Linux logical partitions Use this information to help you plan for Linux logical partitions on IBM eServer hardware. This is your starting point for getting Linux up and running on IBM eServer hardware. Configuring Linux logical partitions Use this information to learn about logical partition configuration and resource requirements for a Linux installation. Managing Linux logical partitions ™ Use this information to learn about procedures for managing Linux logical partitions. Using Linux installed on a logical partition Find information about using Linux when it is installed on a logical partition. Troubleshooting Linux logical partitions Use this information to learn how to resolve Linux logical partition errors. Related for Linux logical partitions Use this information to find related material for Linux logical partitions, including Web sites, ™Redbooks , and information center topics. © Copyright IBM Corp. 2004, 2005 12 Partitioning for Linux Chapter 2. What’s new You can run Linux in a logical partition on the IBM eServer OpenPower systems. The following tables describe the enhancements to Linux logical partition support on IBM eServer ™ ®hardware iSeries and pSeries server hardware systems. On iSeries systems, Linux logical partitions support these enhancements. Function Linux on IBM iSeries Linux on IBM eServer i5 LPAR (Logical v iSeries Navigator v Hardware Management Console (HMC) required to partition the Partitioning) user server. v Dedicated Service interface Tools (DST) or System v HMC remote command Service T