=====Mpathconf======
You set up multipath with the **mpathconf** utility, which creates the multipath configuration file **/etc/multipath.conf**.

  * If the **/etc/multipath.conf** file already exists, the **mpathconf** utility will edit it.
  * If the **/etc/multipath.conf** file does not exist, the mpathconf utility will use the **/usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf** file as the starting file.
  * If the **/usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf** file does not exist the **mpathconf** utility will create the **/etc/multipath.conf** file from scratch.

If you do not need to edit the **/etc/multipath.conf** file, you can set up DM-Multipath for a basic failover configuration by running the following command. This command enables the multipath configuration file and starts the **multipathd** daemon.

<file>
# mpathconf --enable --with_multipathd y
</file>

If you need to edit the /etc/multipath.conf file before starting the multipathd daemon. use the following procedure to set up DM-Multipath for a basic failover configuration.
Run the mpathconf command with the --enable option specified:
<file>
# mpathconf --enable
</file>

===Additional Options for MPathconf===
<file>
# mpathconf --help
usage: /sbin/mpathconf <command>

Commands:
Enable: --enable 
Disable: --disable
Set user_friendly_names (Default n): --user_friendly_names <y|n>
Set path_grouping_policy (Default n): --find_multipaths <y|n> 
Load the dm-multipath modules on enable (Default y): --with_module  <y|n>
start/stop/reload multipathd (Default n): --with_multipathd  <y|n>
chkconfig on/off multipathd (Default y): --with_chkconfig  <y|n>
</file>
===Default Values===
You can change them with the **mpathconf** command

^  Value  ^  Default  ^
|  path_grouping_policy  |  Failover  |
|  multipath device names  |  mpathn  |
|  user_friendly_name  |  yes  |