modprobe.conf(5) - phpMan

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MODPROBE.D(5)                               modprobe.d                              MODPROBE.D(5)

       modprobe.d - Configuration directory for modprobe




       Because the modprobe command can add or remove more than one module, due to modules having
       dependencies, we need a method of specifying what options are to be used with those
       modules. All files underneath the /etc/modprobe.d directory which end with the .conf
       extension specify those options as required. They can also be used to create convenient
       aliases: alternate names for a module, or they can override the normal modprobe behavior
       altogether for those with special requirements (such as inserting more than one module).

       Note that module and alias names (like other module names) can have - or _ in them: both
       are interchangeable throughout all the module commands as underscore conversion happens

       The format of and files under modprobe.d is simple: one command per line, with blank lines
       and lines starting with '#' ignored (useful for adding comments). A '\' at the end of a
       line causes it to continue on the next line, which makes the file a bit neater.

       alias wildcard modulename
           This allows you to give alternate names for a module. For example: "alias my-mod
           really_long_modulename" means you can use "modprobe my-mod" instead of "modprobe
           really_long_modulename". You can also use shell-style wildcards, so "alias my-mod*
           really_long_modulename" means that "modprobe my-mod-something" has the same effect.
           You can't have aliases to other aliases (that way lies madness), but aliases can have
           options, which will be added to any other options.

           Note that modules can also contain their own aliases, which you can see using modinfo.
           These aliases are used as a last resort (ie. if there is no real module, install,
           remove, or alias command in the configuration).

       blacklist modulename
           Modules can contain their own aliases: usually these are aliases describing the
           devices they support, such as "pci:123...". These "internal" aliases can be overridden
           by normal "alias" keywords, but there are cases where two or more modules both support
           the same devices, or a module invalidly claims to support a device that it does not:
           the blacklist keyword indicates that all of that particular module's internal aliases
           are to be ignored.

       install modulename command...
           This command instructs modprobe to run your command instead of inserting the module in
           the kernel as normal. The command can be any shell command: this allows you to do any
           kind of complex processing you might wish. For example, if the module "fred" works
           better with the module "barney" already installed (but it doesn't depend on it, so
           modprobe won't automatically load it), you could say "install fred /sbin/modprobe
           barney; /sbin/modprobe --ignore-install fred", which would do what you wanted. Note
           the --ignore-install, which stops the second modprobe from running the same install
           command again. See also remove below.

           The long term future of this command as a solution to the problem of providing
           additional module dependencies is not assured and it is intended to replace this
           command with a warning about its eventual removal or deprecation at some point in a
           future release. Its use complicates the automated determination of module dependencies
           by distribution utilities, such as mkinitrd (because these now need to somehow
           interpret what the install commands might be doing. In a perfect world, modules would
           provide all dependency information without the use of this command and work is
           underway to implement soft dependency support within the Linux kernel.

           If you use the string "$CMDLINE_OPTS" in the command, it will be replaced by any
           options specified on the modprobe command line. This can be useful because users
           expect "modprobe fred opt=1" to pass the "opt=1" arg to the module, even if there's an
           install command in the configuration file. So our above example becomes "install fred
           /sbin/modprobe barney; /sbin/modprobe --ignore-install fred $CMDLINE_OPTS"

       options modulename option...
           This command allows you to add options to the module modulename (which might be an
           alias) every time it is inserted into the kernel: whether directly (using modprobe
           modulename) or because the module being inserted depends on this module.

           All options are added together: they can come from an option for the module itself,
           for an alias, and on the command line.

       remove modulename command...
           This is similar to the install command above, except it is invoked when "modprobe -r"
           is run.

       softdep modulename pre: modules... post: modules...
           The softdep command allows you to specify soft, or optional, module dependencies.
           modulename can be used without these optional modules installed, but usually with some
           features missing. For example, a driver for a storage HBA might require another module
           be loaded in order to use management features.

           pre-deps and post-deps modules are lists of names and/or aliases of other modules that
           modprobe will attempt to install (or remove) in order before and after the main module
           given in the modulename argument.

           Example: Assume "softdep c pre: a b post: d e" is provided in the configuration.
           Running "modprobe c" is now equivalent to "modprobe a b c d e" without the softdep.
           Flags such as --use-blacklist are applied to all the specified modules, while module
           parameters only apply to module c.

           Note: if there are install or remove commands with the same modulename argument,
           softdep takes precedence.

       A future version of kmod will come with a strong warning to avoid use of the install as
       explained above. This will happen once support for soft dependencies in the kernel is
       complete. That support will complement the existing softdep support within this utility by
       providing such dependencies directly within the modules.

       This manual page originally Copyright 2004, Rusty Russell, IBM Corporation. Maintained by
       Jon Masters and others.

       modprobe(8), modules.dep(5)

       Jon Masters <jcm AT>

       Robby Workman <rworkman AT>

       Lucas De Marchi < AT>

kmod                                        03/01/2015                              MODPROBE.D(5)

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