9 dracut.conf - configuration file(s) for dracut
13 _/etc/dracut.conf_ _/etc/dracut.conf.d/*.conf_
14 _/usr/lib/dracut/dracut.conf.d/*.conf_
18 _dracut.conf_ is loaded during the initialisation phase of dracut. Command line
19 parameter will overwrite any values set here.
21 _*.conf_ files are read from /usr/lib/dracut/dracut.conf.d and
22 /etc/dracut.conf.d. Files with the same name in /etc/dracut.conf.d will replace
23 files in /usr/lib/dracut/dracut.conf.d.
24 The files are then read in alphanumerical order and will overwrite parameters
25 set in _/etc/dracut.conf_. Each line specifies an attribute and a value. A '#'
26 indicates the beginning of a comment; following characters, up to the end of the
27 line are not interpreted.
29 dracut command line options will overwrite any values set here.
31 Configuration files must have the extension .conf; other extensions are ignored.
33 *dracutmodules+=*" __<dracut modules>__ "::
34 Specify a space-separated list of dracut modules to call when building the
35 initramfs. Modules are located in _/usr/lib/dracut/modules.d_.
37 *omit_dracutmodules+=*" __<dracut modules>__ "::
38 Omit a space-separated list of dracut modules.
40 *add_dracutmodules+=*" __<dracut modules>__ "::
41 Add a space-separated list of dracut modules.
43 *drivers+=*" __<kernel modules>__ "::
44 Specify a space-separated list of kernel modules to exclusively include in
45 the initramfs. The kernel modules have to be specified without the ".ko"
48 *add_drivers+=*" __<kernel modules>__ "::
49 Specify a space-separated list of kernel modules to add to the initramfs.
50 The kernel modules have to be specified without the ".ko" suffix.
52 *force_drivers+=*" __<list of kernel modules>__ "::
53 See add_drivers above. But in this case it is ensured that the drivers
54 are tried to be loaded early via modprobe.
56 *omit_drivers+=*" __<kernel modules>__ "::
57 Specify a space-separated list of kernel modules not to add to the
58 initramfs. The kernel modules have to be specified without the ".ko" suffix.
60 *filesystems+=*" __<filesystem names>__ "::
61 Specify a space-separated list of kernel filesystem modules to exclusively
62 include in the generic initramfs.
64 *drivers_dir=*"__<kernel modules directory>__"::
65 Specify the directory, where to look for kernel modules
67 *fw_dir+=*" :__<dir>__[:__<dir>__ ...] "::
68 Specify additional directories, where to look for firmwares, separated by :
70 *install_items+=*" __<file>__[ __<file>__ ...] "::
71 Specify additional files to include in the initramfs, separated by spaces.
73 *install_optional_items+=*" __<file>__[ __<file>__ ...] "::
74 Specify additional files to include in the initramfs, separated by spaces,
77 *do_strip=*"__{yes|no}__"::
78 Strip binaries in the initramfs (default=yes)
80 *do_prelink=*"__{yes|no}__"::
81 Prelink binaries in the initramfs (default=yes)
83 *hostonly=*"__{yes|no}__"::
84 Host-Only mode: Install only what is needed for booting the local host
85 instead of a generic host and generate host-specific configuration.
87 *hostonly_cmdline=*"__{yes|no}__"::
88 If set, store the kernel command line arguments needed in the initramfs
90 *persistent_policy=*"__<policy>__"::
91 Use _<policy>_ to address disks and partitions.
92 _<policy>_ can be any directory name found in /dev/disk.
93 E.g. "by-uuid", "by-label"
95 *tmpdir=*"__<temporary directory>__"::
96 Specify temporary directory to use.
100 If chrooted to another root other than the real root device, use --fstab and
101 provide a valid _/etc/fstab_.
104 *use_fstab=*"__{yes|no}__"::
105 Use _/etc/fstab_ instead of _/proc/self/mountinfo_.
107 *add_fstab+=*" __<filename>__ "::
108 Add entries of __<filename>__ to the initramfs /etc/fstab.
110 *add_device+=*" __<device>__ "::
111 Bring up _<device>_ in initramfs, _<device>_ should be the device name.
112 This can be useful in hostonly mode for resume support when your swap is on
113 LVM an encrypted partition.
115 *mdadmconf=*"__{yes|no}__"::
116 Include local _/etc/mdadm.conf_ (default=yes)
118 *lvmconf=*"__{yes|no}__"::
119 Include local _/etc/lvm/lvm.conf_ (default=yes)
121 *fscks=*" __<fsck tools>__ "::
122 Add a space-separated list of fsck tools. If nothing is specified, the
123 default is: "umount mount /sbin/fsck* xfs_db xfs_check xfs_repair e2fsck
124 jfs_fsck reiserfsck btrfsck". The installation is opportunistic
125 (non-existing tools are ignored).
127 *nofscks=*"__{yes|no}__"::
128 If specified, inhibit installation of any fsck tools.
130 *ro_mnt=*"__{yes|no}__"::
131 Mount _/_ and _/usr_ read-only by default.
133 *kernel_cmdline=*"__parameters__"::
134 Specify default kernel command line parameters
136 *kernel_only=*"__{yes|no}__"::
137 Only install kernel drivers and firmware files. (default=no)
139 *no_kernel=*"__{yes|no}__"::
140 Do not install kernel drivers and firmware files (default=no)
142 *acpi_override=*"__{yes|no}__"::
143 [WARNING] ONLY USE THIS IF YOU KNOW WHAT YOU ARE DOING! +
144 Override BIOS provided ACPI tables. For further documentation read
145 Documentation/acpi/initrd_table_override.txt in the kernel sources.
146 Search for ACPI table files (must have .aml suffix) in acpi_table_dir=
147 directory (see below) and add them to a separate uncompressed cpio
148 archive. This cpio archive gets glued (concatenated, uncompressed one
149 must be the first one) to the compressed cpio archive. The first,
150 uncompressed cpio archive is for data which the kernel must be able
151 to access very early (and cannot make use of uncompress alogrithms yet)
152 like microcode or ACPI tables (default=no).
154 *acpi_table_dir=*"__<dir>__"::
155 Directory to search for ACPI tables if acpi_override= is set to yes.
157 *early_microcode=*"{yes|no}"::
158 Combine early microcode with ramdisk (default=no)
160 *stdloglvl*="__\{0-6\}__"::
161 Set logging to standard error level.
163 *sysloglvl*="__\{0-6\}__"::
164 Set logging to syslog level.
166 *fileloglvl=*"__\{0-6\}__"::
167 Set logging to file level.
169 *logfile=*"__<file>__"::
172 *show_modules=*"__{yes|no}__"::
173 Print the name of the included modules to standard output during build.
175 *i18n_vars="__<variable mapping>__"::
176 Distribution specific variable mapping.
177 See dracut/modules.d/10i18n/README for a detailed description.
179 *i18n_default_font=*"__<fontname>__"::
180 The font <fontname> to install, if not specified otherwise.
181 Default is "LatArCyrHeb-16".
183 *i18n_install_all=*"__{yes|no}__"::
184 Install everything regardless of generic or hostonly mode.
186 *reproducible=*"__{yes|no}__"::
187 Create reproducible images.
189 *loginstall=*"__<DIR>__"::
190 Log all files installed from the host to _<DIR>_.
192 *uefi_stub=*"_<FILE>_"::
193 Specifies the UEFI stub loader, which will load the attached kernel, initramfs and
194 kernel command line and boots the kernel. The default is
195 _/lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
196 or _/usr/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
198 *kernel_image=*"_<FILE>_"::
199 Specifies the kernel image, which to include in the UEFI executable. The default is
200 _/lib/modules/<KERNEL-VERSION>/vmlinuz_ or _/boot/vmlinuz-<KERNEL-VERSION>_
205 Old configuration file. You better use your own file in
206 _/etc/dracut.conf.d/_.
208 _/etc/dracut.conf.d/_::
209 Any _/etc/dracut.conf.d/*.conf_ file can overwrite the values in
210 _/etc/dracut.conf_. The configuration files are read in alphanumerical
219 *dracut*(8) *dracut.cmdline*(7)