mpathconf command failed to create multipath.conf

Solution Verified - Updated -

Environment

  • Red Hat Enterprise Linux 6
    • device-mapper-multipath prior to 0.4.9-41.el6

Issue

  • mpathconf command failed to create multipath.conf
    < man mpathconf >mpathconf is a utility that creates or modifies /etc/multipath.conf. 
...
If  /etc/multipath.conf  already exists, mpathconf will edit it.
If it does not exist,mpathconf will use /usr/share/doc/device-mapper-
multipath-0.4.9/multipath.conf as the starting file.
This file has user_friendly_names set. If this file does not exist,
mpathconf will create /etc/multipath.conf from scratch.
< / man >

Resolution

  • Create the multipath.conf file manually with a text editor.

Root Cause

Diagnostic Steps

  • Create multipath.conf file from scratch by mpathconf command
    # mpathconf --enable multipath is enabled
find_multipaths is disabled
user_friendly_names is enabled
dm_multipath module is loaded
multipathd is chkconfiged on

# less /etc/multipath/
bindings             .multipath.conf.tmp  wwids

# multipath -ll
Sep 22 21:04:04 | /etc/multipath.conf does not exist, blacklisting all devices.
Sep 22 21:04:04 | A sample multipath.conf file is located at
Sep 22 21:04:04 | /usr/share/doc/device-mapper-multipath-0.4.9/multipath.conf
Sep 22 21:04:04 | You can run /sbin/mpathconf to create or modify /etc/multipath.conf

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