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DRACUT.CONF(5) |
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============== |
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:doctype: manpage |
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:man source: dracut |
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:man manual: dracut |
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NAME |
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---- |
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dracut.conf - configuration file(s) for dracut |
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SYNOPSIS |
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-------- |
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_/etc/dracut.conf_ |
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_/etc/dracut.conf.d/\*.conf_ |
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_/usr/lib/dracut/dracut.conf.d/*.conf_ |
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Description |
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----------- |
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_dracut.conf_ is loaded during the initialisation phase of dracut. Command line |
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parameter will override any values set here. |
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_*.conf_ files are read from /usr/lib/dracut/dracut.conf.d and |
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/etc/dracut.conf.d. Files with the same name in /etc/dracut.conf.d will replace |
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files in /usr/lib/dracut/dracut.conf.d. |
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The files are then read in alphanumerical order and will override parameters |
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set in _/etc/dracut.conf_. Each line specifies an attribute and a value. A '#' |
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indicates the beginning of a comment; following characters, up to the end of the |
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line are not interpreted. |
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dracut command line options will override any values set here. |
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Configuration files must have the extension .conf; other extensions are ignored. |
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*add_dracutmodules+=*" __<dracut modules>__ ":: |
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Add a space-separated list of dracut modules to call when building the |
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initramfs. Modules are located in _/usr/lib/dracut/modules.d_. |
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*dracutmodules+=*" __<dracut modules>__ ":: |
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Specify a space-separated list of dracut modules to call when building the |
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initramfs. Modules are located in _/usr/lib/dracut/modules.d_. |
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This option forces dracut to only include the specified dracut modules. |
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In most cases the "add_dracutmodules" option is what you want to use. |
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*omit_dracutmodules+=*" __<dracut modules>__ ":: |
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Omit a space-separated list of dracut modules to call when building the |
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initramfs. Modules are located in _/usr/lib/dracut/modules.d_. |
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*drivers+=*" __<kernel modules>__ ":: |
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Specify a space-separated list of kernel modules to exclusively include in |
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the initramfs. The kernel modules have to be specified without the ".ko" |
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suffix. |
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*add_drivers+=*" __<kernel modules>__ ":: |
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Specify a space-separated list of kernel modules to add to the initramfs. |
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The kernel modules have to be specified without the ".ko" suffix. |
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*force_drivers+=*" __<list of kernel modules>__ ":: |
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See add_drivers above. But in this case it is ensured that the drivers |
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are tried to be loaded early via modprobe. |
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*omit_drivers+=*" __<kernel modules>__ ":: |
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Specify a space-separated list of kernel modules not to add to the |
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initramfs. The kernel modules have to be specified without the ".ko" suffix. |
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*filesystems+=*" __<filesystem names>__ ":: |
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Specify a space-separated list of kernel filesystem modules to exclusively |
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include in the generic initramfs. |
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*drivers_dir=*"__<kernel modules directory>__":: |
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Specify the directory, where to look for kernel modules |
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*fw_dir+=*" :__<dir>__[:__<dir>__ ...] ":: |
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Specify additional directories, where to look for firmwares, separated by : |
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*install_items+=*" __<file>__[ __<file>__ ...] ":: |
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Specify additional files to include in the initramfs, separated by spaces. |
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*install_optional_items+=*" __<file>__[ __<file>__ ...] ":: |
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Specify additional files to include in the initramfs, separated by spaces, |
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if they exist. |
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*compress=*"__{bzip2|lzma|xz|gzip|lzo|lz4|zstd|<compressor [args ...]>}__":: |
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Compress the generated initramfs using the passed compression program. If |
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you pass it just the name of a compression program, it will call that |
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program with known-working arguments. If you pass arguments, it will be called |
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with exactly those arguments. Depending on what you pass, this may result in |
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an initramfs that the kernel cannot decompress. |
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*do_strip=*"__{yes|no}__":: |
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Strip binaries in the initramfs (default=yes) |
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*hostonly=*"__{yes|no}__":: |
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Host-Only mode: Install only what is needed for booting the local host |
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instead of a generic host and generate host-specific configuration. |
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*hostonly_cmdline=*"__{yes|no}__":: |
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If set to "yes", store the kernel command line arguments needed in the initramfs |
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*persistent_policy=*"__<policy>__":: |
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Use _<policy>_ to address disks and partitions. |
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_<policy>_ can be any directory name found in /dev/disk. |
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E.g. "by-uuid", "by-label" |
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*tmpdir=*"__<temporary directory>__":: |
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Specify temporary directory to use. |
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[WARNING] |
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==== |
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If chrooted to another root other than the real root device, use --fstab and |
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provide a valid _/etc/fstab_. |
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==== |
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*use_fstab=*"__{yes|no}__":: |
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Use _/etc/fstab_ instead of _/proc/self/mountinfo_. |
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*add_fstab+=*" __<filename>__ ":: |
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Add entries of __<filename>__ to the initramfs /etc/fstab. |
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*add_device+=*" __<device>__ ":: |
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Bring up _<device>_ in initramfs, _<device>_ should be the device name. |
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This can be useful in hostonly mode for resume support when your swap is on |
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LVM an encrypted partition. |
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*mdadmconf=*"__{yes|no}__":: |
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Include local _/etc/mdadm.conf_ (default=yes) |
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*lvmconf=*"__{yes|no}__":: |
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Include local _/etc/lvm/lvm.conf_ (default=yes) |
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*fscks=*" __<fsck tools>__ ":: |
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Add a space-separated list of fsck tools. If nothing is specified, the |
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default is: "umount mount /sbin/fsck* xfs_db xfs_check xfs_repair e2fsck |
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jfs_fsck reiserfsck btrfsck". The installation is opportunistic |
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(non-existing tools are ignored). |
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*nofscks=*"__{yes|no}__":: |
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If specified, inhibit installation of any fsck tools. |
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*ro_mnt=*"__{yes|no}__":: |
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Mount _/_ and _/usr_ read-only by default. |
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*kernel_cmdline=*"__parameters__":: |
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Specify default kernel command line parameters |
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*kernel_only=*"__{yes|no}__":: |
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Only install kernel drivers and firmware files. (default=no) |
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*no_kernel=*"__{yes|no}__":: |
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Do not install kernel drivers and firmware files (default=no) |
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*acpi_override=*"__{yes|no}__":: |
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[WARNING] ONLY USE THIS IF YOU KNOW WHAT YOU ARE DOING! + |
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Override BIOS provided ACPI tables. For further documentation read |
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Documentation/acpi/initrd_table_override.txt in the kernel sources. |
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Search for ACPI table files (must have .aml suffix) in acpi_table_dir= |
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directory (see below) and add them to a separate uncompressed cpio |
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archive. This cpio archive gets glued (concatenated, uncompressed one |
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must be the first one) to the compressed cpio archive. The first, |
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uncompressed cpio archive is for data which the kernel must be able |
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to access very early (and cannot make use of uncompress algorithms yet) |
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like microcode or ACPI tables (default=no). |
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*acpi_table_dir=*"__<dir>__":: |
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Directory to search for ACPI tables if acpi_override= is set to yes. |
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*early_microcode=*"{yes|no}":: |
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Combine early microcode with ramdisk (default=yes) |
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*stdloglvl*="__\{0-6\}__":: |
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Set logging to standard error level. |
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*sysloglvl*="__\{0-6\}__":: |
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Set logging to syslog level. |
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*fileloglvl=*"__\{0-6\}__":: |
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Set logging to file level. |
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*logfile=*"__<file>__":: |
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Path to log file. |
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*show_modules=*"__{yes|no}__":: |
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Print the name of the included modules to standard output during build. |
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*i18n_vars=*"__<variable mapping>__":: |
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Distribution specific variable mapping. |
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See dracut/modules.d/10i18n/README for a detailed description. |
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*i18n_default_font=*"__<fontname>__":: |
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The font <fontname> to install, if not specified otherwise. |
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Default is "eurlatgr". |
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*i18n_install_all=*"__{yes|no}__":: |
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Install everything regardless of generic or hostonly mode. |
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*reproducible=*"__{yes|no}__":: |
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Create reproducible images. |
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*loginstall=*"__<DIR>__":: |
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Log all files installed from the host to _<DIR>_. |
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*uefi_stub=*"_<FILE>_":: |
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Specifies the UEFI stub loader, which will load the attached kernel, initramfs and |
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kernel command line and boots the kernel. The default is |
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_/lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_ |
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or _/usr/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_ |
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*uefi_secureboot_cert=*"_<FILE>_", *uefi_secureboot_key=*"_<FILE>_":: |
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Specifies a certificate and corresponding key, which are used to sign the created UEFI executable. |
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Requires both certificate and key need to be specified and _sbsign_ to be installed. |
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*kernel_image=*"_<FILE>_":: |
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Specifies the kernel image, which to include in the UEFI executable. The default is |
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_/lib/modules/<KERNEL-VERSION>/vmlinuz_ or _/boot/vmlinuz-<KERNEL-VERSION>_ |
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Files |
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----- |
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_/etc/dracut.conf_:: |
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Old configuration file. You better use your own file in |
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_/etc/dracut.conf.d/_. |
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_/etc/dracut.conf.d/_:: |
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Any _/etc/dracut.conf.d/*.conf_ file can override the values in |
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_/etc/dracut.conf_. The configuration files are read in alphanumerical |
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order. |
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AUTHOR |
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------ |
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Harald Hoyer |
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See Also |
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-------- |
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*dracut*(8) *dracut.cmdline*(7) |
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