MPATHCONF(8) Linux Administrator's Manual MPATHCONF(8)NAMEmpathconf - A tool for configuring device-mapper-multipath
SYNOPSISmpathconf [commands] [options]
DESCRIPTIONmpathconf is a utility that creates or modifies /etc/multipath.conf.
It can enable or disable multipathing and configure some common
options. mpathconf can also load the dm_multipath module, start and
stop the multipathd daemon, and configure the multipathd service to
start automatically or not. If mpathconf is called with no commands, it
will display the current configuration.
The default options for mpathconf are --with_module and --with_chkcon‐
fig. The --with_multipathd option is not set by default. Enabling
multipathing will load the dm_multipath module and chkconfig multipathd
to start on the next boot, but it will not immediately start it. This
is so that users can manually edit their config file if necessary,
before starting multipathd.
If /etc/multipath.conf already exists, mpathconf will edit it. If it
does not exist, mpathconf will use /usr/share/doc/device-mapper-multi‐
path-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. For most users, this means
that user_friendly_names will be set by default, unless they use the
--user_friendly_names n command.
COMMANDS--enable
Removes any line that blacklists all device nodes from the
/etc/multipath.conf blacklist section.
--disable
Adds a line that blacklists all device nodes to the /etc/multi‐
path.conf blacklist section. If no blacklist section exists, it
will create one.
--user_friendly_name { y | n }
If set to y, this adds the line user_friendly_names yes to the
/etc/multipath.conf defaults section. If set to n, this removes
the line, if present. This command can be used along with any
other command.
--find_multipaths { y | n }
If set to y, this adds the line find_multipaths yes to the
/etc/multipath.conf defaults section. If set to n, this removes
the line, if present. This command can be used aldong with any
other command.
OPTIONS--with_module { y | n }
If set to y, this runs modprobe dm_multipath to install the mul‐
tipath modules. This option only works with the --enable com‐
mand. This option is set to y by default.
--with_multipathd { y | n }
If set to y, this runs service multipathd start to start the
multipathd daemon on --enable, service multipathd stop to start
the multipathd daemon on --disable, and service multipathd
reload to reconfigure multipathd on --user_frindly_names and
--find_multipaths. This option is set to n by default.
--with_chkconfig { y | n }
If set to y, this runs chkconfig multipathd on to set multipathd
to start automatically on --enable and chkconfig multipathd off
to stop multipathd for starting automatically on --disable.
This option is set to y by default.
FILES
/etc/multipath.conf
SEE ALSOmultipath.conf(5), chkconfig(8), modprobe(8), multipath(8), multi‐
pathd(8), service(8),
AUTHOR
Benjamin Marzinski <bmarzins@redhat.com>
June 2010 MPATHCONF(8)
