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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.
4
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,
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Table of Contents
Troubleshooting
