Dm-Multipath Setup Overview - Red Hat ENTERPRISE LINUX 5 DM MULTIPATH Configuration And Administration Manual

Table of Contents

Chapter 1. Device Mapper Multipathing

Component

kpartx command

Table 1.1. DM-Multipath Components

1.4. DM-Multipath Setup Overview

DM-Multipath includes compiled-in default settings that are suitable for common multipath

configurations. Setting up DM-multipath is often a simple procedure.

The basic procedure for configuring your system with DM-Multipath is as follows:

1. Install device-mapper-multipath rpm.

2. Edit the multipath.conf configuration file:

• comment out the default blacklist

• change any of the existing defaults as needed

• save the configuration file

3. Start the multipath daemons.

4. Create the multipath device with the multipath command.

Detailed setup instructions for several example multipath configurations are provided in see

Setting Up

DM-Multipath.

Description

Creates device mapper devices for the partitions on a device It is

necessary to use this command for DOS-based partitions with DM-

MP. The kpartx is provided in its own package, but the device-

mapper-multipath package depends on it.

Chapter 3,

Table of Contents

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