The software described in this documentation is either in Extended Support or Sustaining Support. See https://www.oracle.com/us/support/library/enterprise-linux-support-policies-069172.pdf for more information.
Oracle recommends that you upgrade the software described by this documentation as soon as possible.
Modules accept parameters that you can specify using modprobe to modify a module's behavior:
# modprobe module_name parameter=value ...Use spaces to separate multiple parameter/value pairs. Array values are represented by a comma-separated list, for example:
# modprobe foo arrayparm=1,2,3,4
You can also change the values of some parameters for loaded
modules and built-in drivers by writing the new value to a file
under
/sys/module/,
for example:
module_name/parameters
# echo 0 > /sys/module/ahci/parameters/skip_host_reset
The /etc/modprobe.d directory contains
.conf configuration files specify module
options, create module aliases, and override the usual behavior of
modprobe for modules with special requirements.
The /etc/modprobe.conf file that was used with
earlier versions of modprobe is also valid if
it exists. Entries in the /etc/modprobe.conf
and /etc/modprobe.d/*.conf files use the same
syntax.
The following are commonly used commands in modprobe configuration files:
-
alias Creates an alternate name for a module. The alias can include shell wildcards. For example, create an alias for the
sd-modmodule:alias block-major-8-* sd_mod
As a result, a command such as modprobe block-major-8-0 has the same effect as modprobe sd_mod.
-
blacklist Ignore a module's internal alias that is displayed by the modinfo command. This command is typically used if the associated hardware is not required, if two or more modules both support the same devices, or if a module invalidly claims to support a device. For example, blacklist the alias for the frame-buffer driver
cirrusfb:blacklist cirrusfb
The
/etc/modprobe.d/blacklist.conffile prevents hotplug scripts from loading a module, usually so that a different driver binds the module instead, regardless of which driver happens to be probed first.-
install Runs a shell command instead of loading a module into the kernel. For example, load the module
snd-emu10k1-synthinstead ofsnd-emu10k1:install snd-emu10k1 /sbin/modprobe --ignore-install snd-emu10k1 && \ /sbin/modprobe snd-emu10k1-synth
-
options Defines options for a module,. For example, define the
nohwcryptandqosoptions for theb43module:options b43 nohwcrypt=1 qos=0
-
remove Runs a shell command instead of unloading a module. For example, unmount
/proc/fs/nfsdbefore unloading thenfsdmodule:remove nfsd { /bin/umount /proc/fs/nfsd > /dev/null 2>&1 || :; } ; \ /sbin/modprobe -r --first-time --ignore-remove nfsdFor more information, see the
modprobe.conf(5)manual page.