dracut.conf(5)

NAME

   dracut.conf - configuration file(s) for dracut

SYNOPSIS

   /etc/dracut.conf /etc/dracut.conf.d/*.conf
   /usr/lib/dracut/dracut.conf.d/*.conf

DESCRIPTION

   dracut.conf is loaded during the initialisation phase of dracut.
   Command line parameter will overwrite any values set here.

   *.conf files are read from /usr/lib/dracut/dracut.conf.d and
   /etc/dracut.conf.d. Files with the same name in /etc/dracut.conf.d will
   replace files in /usr/lib/dracut/dracut.conf.d. The files are then read
   in alphanumerical order and will overwrite parameters set in
   /etc/dracut.conf. Each line specifies an attribute and a value. A #
   indicates the beginning of a comment; following characters, up to the
   end of the line are not interpreted.

   dracut command line options will overwrite any values set here.

   Configuration files must have the extension .conf; other extensions are
   ignored.

   add_dracutmodules+=" <dracut modules> "
       Add a space-separated list of dracut modules to call when building
       the initramfs. Modules are located in /usr/lib/dracut/modules.d.

   dracutmodules+=" <dracut modules> "
       Specify a space-separated list of dracut modules to call when
       building the initramfs. Modules are located in
       /usr/lib/dracut/modules.d. This option forces dracut to only
       include the specified dracut modules. In most cases the
       "add_dracutmodules" option is what you want to use.

   omit_dracutmodules+=" <dracut modules> "
       Omit a space-separated list of dracut modules to call when building
       the initramfs. Modules are located in /usr/lib/dracut/modules.d.

   drivers+=" <kernel modules> "
       Specify a space-separated list of kernel modules to exclusively
       include in the initramfs. The kernel modules have to be specified
       without the ".ko" suffix.

   add_drivers+=" <kernel modules> "
       Specify a space-separated list of kernel modules to add to the
       initramfs. The kernel modules have to be specified without the
       ".ko" suffix.

   force_drivers+=" <list of kernel modules> "
       See add_drivers above. But in this case it is ensured that the
       drivers are tried to be loaded early via modprobe.

   omit_drivers+=" <kernel modules> "
       Specify a space-separated list of kernel modules not to add to the
       initramfs. The kernel modules have to be specified without the
       ".ko" suffix.

   filesystems+=" <filesystem names> "
       Specify a space-separated list of kernel filesystem modules to
       exclusively include in the generic initramfs.

   drivers_dir="<kernel modules directory>"
       Specify the directory, where to look for kernel modules

   fw_dir+=" :<dir>[:<dir> ...] "
       Specify additional directories, where to look for firmwares,
       separated by :

   install_items+=" <file>[ <file> ...] "
       Specify additional files to include in the initramfs, separated by
       spaces.

   install_optional_items+=" <file>[ <file> ...] "
       Specify additional files to include in the initramfs, separated by
       spaces, if they exist.

   compress="{bzip2|lzma|xz|gzip|lzo|lz4|<compressor [args ...]>}"
       Compress the generated initramfs using the passed compression
       program. If you pass it just the name of a compression program, it
       will call that program with known-working arguments. If you pass
       arguments, it will be called with exactly those arguments.
       Depending on what you pass, this may result in an initramfs that
       the kernel cannot decompress.

   do_strip="{yes|no}"
       Strip binaries in the initramfs (default=yes)

   do_prelink="{yes|no}"
       Prelink binaries in the initramfs (default=yes)

   hostonly="{yes|no}"
       Host-Only mode: Install only what is needed for booting the local
       host instead of a generic host and generate host-specific
       configuration.

   hostonly_cmdline="{yes|no}"
       If set, store the kernel command line arguments needed in the
       initramfs

   persistent_policy="<policy>"
       Use <policy> to address disks and partitions.  <policy> can be any
       directory name found in /dev/disk. E.g. "by-uuid", "by-label"

   tmpdir="<temporary directory>"
       Specify temporary directory to use.

       Warning
       If chrooted to another root other than the real root device, use
       --fstab and provide a valid /etc/fstab.

   use_fstab="{yes|no}"
       Use /etc/fstab instead of /proc/self/mountinfo.

   add_fstab+=" <filename> "
       Add entries of <filename> to the initramfs /etc/fstab.

   add_device+=" <device> "
       Bring up <device> in initramfs, <device> should be the device name.
       This can be useful in hostonly mode for resume support when your
       swap is on LVM an encrypted partition.

   mdadmconf="{yes|no}"
       Include local /etc/mdadm.conf (default=yes)

   lvmconf="{yes|no}"
       Include local /etc/lvm/lvm.conf (default=yes)

   fscks=" <fsck tools> "
       Add a space-separated list of fsck tools. If nothing is specified,
       the default is: "umount mount /sbin/fsck* xfs_db xfs_check
       xfs_repair e2fsck jfs_fsck reiserfsck btrfsck". The installation is
       opportunistic (non-existing tools are ignored).

   nofscks="{yes|no}"
       If specified, inhibit installation of any fsck tools.

   ro_mnt="{yes|no}"
       Mount / and /usr read-only by default.

   kernel_cmdline="parameters"
       Specify default kernel command line parameters

   kernel_only="{yes|no}"
       Only install kernel drivers and firmware files. (default=no)

   no_kernel="{yes|no}"
       Do not install kernel drivers and firmware files (default=no)

   acpi_override="{yes|no}"
       [WARNING] ONLY USE THIS IF YOU KNOW WHAT YOU ARE DOING!

       Override BIOS provided ACPI tables. For further documentation read
       Documentation/acpi/initrd_table_override.txt in the kernel sources.
       Search for ACPI table files (must have .aml suffix) in
       acpi_table_dir= directory (see below) and add them to a separate
       uncompressed cpio archive. This cpio archive gets glued
       (concatenated, uncompressed one must be the first one) to the
       compressed cpio archive. The first, uncompressed cpio archive is
       for data which the kernel must be able to access very early (and
       cannot make use of uncompress alogrithms yet) like microcode or
       ACPI tables (default=no).

   acpi_table_dir="<dir>"
       Directory to search for ACPI tables if acpi_override= is set to
       yes.

   early_microcode="{yes|no}"
       Combine early microcode with ramdisk (default=no)

   stdloglvl="{0-6}"
       Set logging to standard error level.

   sysloglvl="{0-6}"
       Set logging to syslog level.

   fileloglvl="{0-6}"
       Set logging to file level.

   logfile="<file>"
       Path to log file.

   show_modules="{yes|no}"
       Print the name of the included modules to standard output during
       build.

   i18n_vars="<variable mapping>"
       Distribution specific variable mapping. See
       dracut/modules.d/10i18n/README for a detailed description.

   i18n_default_font="<fontname>"
       The font <fontname> to install, if not specified otherwise. Default
       is "LatArCyrHeb-16".

   i18n_install_all="{yes|no}"
       Install everything regardless of generic or hostonly mode.

   reproducible="{yes|no}"
       Create reproducible images.

   loginstall="<DIR>"
       Log all files installed from the host to <DIR>.

   uefi_stub="<FILE>"
       Specifies the UEFI stub loader, which will load the attached
       kernel, initramfs and kernel command line and boots the kernel. The
       default is
       /lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub or
       /usr/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub

   kernel_image="<FILE>"
       Specifies the kernel image, which to include in the UEFI
       executable. The default is /lib/modules/<KERNEL-VERSION>/vmlinuz or
       /boot/vmlinuz-<KERNEL-VERSION>

FILES

   /etc/dracut.conf
       Old configuration file. You better use your own file in
       /etc/dracut.conf.d/.

   /etc/dracut.conf.d/
       Any /etc/dracut.conf.d/*.conf file can overwrite the values in
       /etc/dracut.conf. The configuration files are read in
       alphanumerical order.

AUTHOR

   Harald Hoyer

SEE ALSO

   dracut(8) dracut.cmdline(7)

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