dracut.conf.5.asc

   1 DRACUT.CONF(5)
   2 ==============
   3 :doctype: manpage
   4 :man source:   dracut
   5 :man manual:   dracut
   6
   7 NAME
   8 ----
   9 dracut.conf - configuration file(s) for dracut
  10
  11 SYNOPSIS
  12 --------
  13 _/etc/dracut.conf_
  14 _/etc/dracut.conf.d/\*.conf_
  15 _/usr/lib/dracut/dracut.conf.d/*.conf_
  16
  17 Description
  18 -----------
  19 _dracut.conf_ is loaded during the initialisation phase of dracut. Command line
  20 parameter will override any values set here.
  21
  22 _*.conf_ files are read from /usr/lib/dracut/dracut.conf.d and
  23 /etc/dracut.conf.d. Files with the same name in /etc/dracut.conf.d will replace
  24 files in /usr/lib/dracut/dracut.conf.d.
  25 The files are then read in alphanumerical order and will override parameters
  26 set in _/etc/dracut.conf_. Each line specifies an attribute and a value. A '#'
  27 indicates the beginning of a comment; following characters, up to the end of the
  28 line are not interpreted.
  29
  30 dracut command line options will override any values set here.
  31
  32 Configuration files must have the extension .conf; other extensions are ignored.
  33
  34 *add_dracutmodules+=*" __<dracut modules>__ "::
  35     Add a space-separated list of dracut modules to call when building the
  36     initramfs. Modules are located in _/usr/lib/dracut/modules.d_.
  37
  38 *dracutmodules+=*" __<dracut modules>__ "::
  39     Specify a space-separated list of dracut modules to call when building the
  40     initramfs. Modules are located in _/usr/lib/dracut/modules.d_.
  41     This option forces dracut to only include the specified dracut modules.
  42     In most cases the "add_dracutmodules" option is what you want to use.
  43
  44 *omit_dracutmodules+=*" __<dracut modules>__ "::
  45     Omit a space-separated list of dracut modules to call when building the
  46     initramfs. Modules are located in _/usr/lib/dracut/modules.d_.
  47
  48 *drivers+=*" __<kernel modules>__ "::
  49     Specify a space-separated list of kernel modules to exclusively include in
  50     the initramfs. The kernel modules have to be specified without the ".ko"
  51     suffix.
  52
  53 *add_drivers+=*" __<kernel modules>__ "::
  54     Specify a space-separated list of kernel modules to add to the initramfs.
  55     The kernel modules have to be specified without the ".ko" suffix.
  56
  57 *force_drivers+=*" __<list of kernel modules>__ "::
  58     See add_drivers above. But in this case it is ensured that the drivers
  59     are tried to be loaded early via modprobe.
  60
  61 *omit_drivers+=*" __<kernel modules>__ "::
  62     Specify a space-separated list of kernel modules not to add to the
  63     initramfs. The kernel modules have to be specified without the ".ko" suffix.
  64
  65 *filesystems+=*" __<filesystem names>__ "::
  66     Specify a space-separated list of kernel filesystem modules to exclusively
  67     include in the generic initramfs.
  68
  69 *drivers_dir=*"__<kernel modules directory>__"::
  70     Specify the directory, where to look for kernel modules
  71
  72 *fw_dir+=*" :__<dir>__[:__<dir>__ ...] "::
  73     Specify additional directories, where to look for firmwares, separated by :
  74
  75 *install_items+=*" __<file>__[ __<file>__ ...] "::
  76     Specify additional files to include in the initramfs, separated by spaces.
  77
  78 *install_optional_items+=*" __<file>__[ __<file>__ ...] "::
  79     Specify additional files to include in the initramfs, separated by spaces,
  80     if they exist.
  81
  82 *compress=*"__{bzip2|lzma|xz|gzip|lzo|lz4|zstd|<compressor [args ...]>}__"::
  83     Compress the generated initramfs using the passed compression program. If
  84     you pass it just the name of a compression program, it will call that
  85     program with known-working arguments. If you pass arguments, it will be called
  86     with exactly those arguments. Depending on what you pass, this may result in
  87     an initramfs that the kernel cannot decompress.
  88
  89 *do_strip=*"__{yes|no}__"::
  90     Strip binaries in the initramfs (default=yes)
  91
  92 *hostonly=*"__{yes|no}__"::
  93     Host-Only mode: Install only what is needed for booting the local host
  94     instead of a generic host and generate host-specific configuration.
  95
  96 *hostonly_cmdline=*"__{yes|no}__"::
  97     If set to "yes", store the kernel command line arguments needed in the initramfs
  98
  99 *persistent_policy=*"__<policy>__"::
 100     Use _<policy>_ to address disks and partitions.
 101     _<policy>_ can be any directory name found in /dev/disk.
 102     E.g. "by-uuid", "by-label"
 103
 104 *tmpdir=*"__<temporary directory>__"::
 105     Specify temporary directory to use.
 106
 107 [WARNING]
 108 ====
 109 If chrooted to another root other than the real root device, use --fstab and
 110 provide a valid _/etc/fstab_.
 111 ====
 112
 113 *use_fstab=*"__{yes|no}__"::
 114     Use _/etc/fstab_ instead of _/proc/self/mountinfo_.
 115
 116 *add_fstab+=*" __<filename>__ "::
 117     Add entries of __<filename>__ to the initramfs /etc/fstab.
 118
 119 *add_device+=*" __<device>__ "::
 120     Bring up _<device>_ in initramfs, _<device>_ should be the device name.
 121     This can be useful in hostonly mode for resume support when your swap is on
 122     LVM an encrypted partition.
 123
 124 *mdadmconf=*"__{yes|no}__"::
 125     Include local _/etc/mdadm.conf_ (default=yes)
 126
 127 *lvmconf=*"__{yes|no}__"::
 128     Include local _/etc/lvm/lvm.conf_ (default=yes)
 129
 130 *fscks=*" __<fsck tools>__ "::
 131     Add a space-separated list of fsck tools. If nothing is specified, the
 132     default is: "umount mount /sbin/fsck* xfs_db xfs_check xfs_repair e2fsck
 133     jfs_fsck reiserfsck btrfsck". The installation is opportunistic
 134     (non-existing tools are ignored).
 135
 136 *nofscks=*"__{yes|no}__"::
 137     If specified, inhibit installation of any fsck tools.
 138
 139 *ro_mnt=*"__{yes|no}__"::
 140     Mount _/_ and _/usr_ read-only by default.
 141
 142 *kernel_cmdline=*"__parameters__"::
 143     Specify default kernel command line parameters
 144
 145 *kernel_only=*"__{yes|no}__"::
 146     Only install kernel drivers and firmware files. (default=no)
 147
 148 *no_kernel=*"__{yes|no}__"::
 149     Do not install kernel drivers and firmware files (default=no)
 150
 151 *acpi_override=*"__{yes|no}__"::
 152     [WARNING] ONLY USE THIS IF YOU KNOW WHAT YOU ARE DOING! +
 153     Override BIOS provided ACPI tables. For further documentation read
 154     Documentation/acpi/initrd_table_override.txt in the kernel sources.
 155     Search for ACPI table files (must have .aml suffix) in acpi_table_dir=
 156     directory (see below) and add them to a separate uncompressed cpio
 157     archive. This cpio archive gets glued (concatenated, uncompressed one
 158     must be the first one) to the compressed cpio archive. The first,
 159     uncompressed cpio archive is for data which the kernel must be able
 160     to access very early (and cannot make use of uncompress algorithms yet)
 161     like microcode or ACPI tables (default=no).
 162
 163 *acpi_table_dir=*"__<dir>__"::
 164     Directory to search for ACPI tables if acpi_override= is set to yes.
 165
 166 *early_microcode=*"{yes|no}"::
 167     Combine early microcode with ramdisk (default=yes)
 168
 169 *stdloglvl*="__\{0-6\}__"::
 170     Set logging to standard error level.
 171
 172 *sysloglvl*="__\{0-6\}__"::
 173     Set logging to syslog level.
 174
 175 *fileloglvl=*"__\{0-6\}__"::
 176     Set logging to file level.
 177
 178 *logfile=*"__<file>__"::
 179     Path to log file.
 180
 181 *show_modules=*"__{yes|no}__"::
 182     Print the name of the included modules to standard output during build.
 183
 184 *i18n_vars=*"__<variable mapping>__"::
 185     Distribution specific variable mapping.
 186     See dracut/modules.d/10i18n/README for a detailed description.
 187
 188 *i18n_default_font=*"__<fontname>__"::
 189     The font <fontname> to install, if not specified otherwise.
 190     Default is "LatArCyrHeb-16".
 191
 192 *i18n_install_all=*"__{yes|no}__"::
 193     Install everything regardless of generic or hostonly mode.
 194
 195 *reproducible=*"__{yes|no}__"::
 196     Create reproducible images.
 197
 198 *loginstall=*"__<DIR>__"::
 199     Log all files installed from the host to _<DIR>_.
 200
 201 *uefi_stub=*"_<FILE>_"::
 202     Specifies the UEFI stub loader, which will load the attached kernel, initramfs and
 203     kernel command line and boots the kernel. The default is
 204     _/lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
 205     or _/usr/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_
 206
 207 *kernel_image=*"_<FILE>_"::
 208     Specifies the kernel image, which to include in the UEFI executable. The default is
 209     _/lib/modules/<KERNEL-VERSION>/vmlinuz_ or _/boot/vmlinuz-<KERNEL-VERSION>_
 210
 211 Files
 212 -----
 213 _/etc/dracut.conf_::
 214     Old configuration file. You better use your own file in
 215     _/etc/dracut.conf.d/_.
 216
 217 _/etc/dracut.conf.d/_::
 218     Any _/etc/dracut.conf.d/*.conf_ file can override the values in
 219     _/etc/dracut.conf_. The configuration files are read in alphanumerical
 220     order.
 221
 222 AUTHOR
 223 ------
 224 Harald Hoyer
 225
 226 See Also
 227 --------
 228 *dracut*(8) *dracut.cmdline*(7)
 229