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888d53f2 HH |
1 | DRACUT(8) |
2 | ========= | |
3 | :doctype: manpage | |
4 | :man source: dracut | |
5 | :man manual: dracut | |
6 | ||
7 | NAME | |
8 | ---- | |
319867fa | 9 | dracut - low-level tool for generating an initramfs/initrd image |
888d53f2 HH |
10 | |
11 | SYNOPSIS | |
12 | -------- | |
b6c89768 | 13 | *dracut* [__OPTION...__] [__<image>__ [__<kernel version>__]] |
888d53f2 HH |
14 | |
15 | DESCRIPTION | |
16 | ----------- | |
4c3be42c HH |
17 | |
18 | Create an initramfs <image> for the kernel with the version <kernel version>. | |
19 | If <kernel version> is omitted, then the version of the actual running | |
20 | kernel is used. If <image> is omitted or empty, then the default location | |
21 | /boot/initramfs-<kernel version>.img is used. | |
22 | ||
888d53f2 HH |
23 | dracut creates an initial image used by the kernel for preloading the block |
24 | device modules (such as IDE, SCSI or RAID) which are needed to access the root | |
25 | filesystem, mounting the root filesystem and booting into the real system. | |
26 | ||
27 | At boot time, the kernel unpacks that archive into RAM disk, mounts and uses it | |
28 | as initial root file system. All finding of the root device happens in this | |
29 | early userspace. | |
30 | ||
319867fa HH |
31 | Initramfs images are also called "initrd". |
32 | ||
4c3be42c HH |
33 | For a complete list of kernel command line options see *dracut.cmdline*(7). |
34 | ||
64d144ae | 35 | If you are dropped to an emergency shell, while booting your initramfs, |
05b879ed | 36 | the file _/run/initramfs/rdsosreport.txt_ is created, which can be saved to a |
64d144ae | 37 | (to be mounted by hand) partition (usually /boot) or a USB stick. |
ef9ddb91 HH |
38 | Additional debugging info can be produced by adding **rd.debug** to the kernel |
39 | command line. _/run/initramfs/rdsosreport.txt_ contains all logs and the output | |
40 | of some tools. It should be attached to any report about dracut problems. | |
64d144ae | 41 | |
b6c89768 HH |
42 | USAGE |
43 | ----- | |
4c3be42c | 44 | |
b6c89768 | 45 | include::dracut.usage.asc[] |
888d53f2 HH |
46 | |
47 | OPTIONS | |
48 | ------- | |
e65caf36 HH |
49 | **--kver** _<kernel version>_:: |
50 | set the kernel version. This enables to specify the kernel version, without | |
51 | specifying the location of the initramfs image. For example: | |
52 | ---- | |
53 | # dracut --kver 3.5.0-0.rc7.git1.2.fc18.x86_64 | |
54 | ---- | |
55 | ||
888d53f2 HH |
56 | **-f, --force**:: |
57 | overwrite existing initramfs file. | |
58 | ||
319867fa HH |
59 | **-a, --add** _<list of dracut modules>_:: |
60 | add a space-separated list of dracut modules to the default set of modules. | |
61 | This parameter can be specified multiple times. | |
888d53f2 HH |
62 | + |
63 | [NOTE] | |
64 | =============================== | |
65 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
66 | example: | |
67 | ---- | |
319867fa | 68 | # dracut --add "module1 module2" ... |
888d53f2 HH |
69 | ---- |
70 | =============================== | |
71 | ||
319867fa HH |
72 | **--force-add** _<list of dracut modules>_:: |
73 | force to add a space-separated list of dracut modules to the default set of | |
74 | modules, when -H is specified. This parameter can be specified multiple | |
75 | times. | |
18595ced | 76 | + |
888d53f2 HH |
77 | [NOTE] |
78 | =============================== | |
79 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
80 | example: | |
81 | ---- | |
319867fa | 82 | # dracut --force-add "module1 module2" ... |
888d53f2 HH |
83 | ---- |
84 | =============================== | |
85 | ||
319867fa HH |
86 | **-o, --omit** _<list of dracut modules>_:: |
87 | omit a space-separated list of dracut modules. This parameter can be | |
88 | specified multiple times. | |
888d53f2 HH |
89 | + |
90 | [NOTE] | |
91 | =============================== | |
92 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
93 | example: | |
94 | ---- | |
319867fa | 95 | # dracut --omit "module1 module2" ... |
888d53f2 HH |
96 | ---- |
97 | =============================== | |
98 | ||
319867fa HH |
99 | **-m, --modules** _<list of dracut modules>_:: |
100 | specify a space-separated list of dracut modules to call when building the | |
101 | initramfs. Modules are located in _/usr/lib/dracut/modules.d_. This | |
102 | parameter can be specified multiple times. | |
103 | This option forces dracut to only include the specified dracut modules. | |
104 | In most cases the "--add" option is what you want to use. | |
888d53f2 HH |
105 | + |
106 | [NOTE] | |
107 | =============================== | |
108 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
109 | example: | |
110 | ---- | |
319867fa | 111 | # dracut --modules "module1 module2" ... |
888d53f2 HH |
112 | ---- |
113 | =============================== | |
114 | ||
115 | **-d, --drivers** _<list of kernel modules>_:: | |
116 | specify a space-separated list of kernel modules to exclusively include | |
117 | in the initramfs. The kernel modules have to be specified without the ".ko" | |
118 | suffix. This parameter can be specified multiple times. | |
119 | + | |
120 | [NOTE] | |
121 | =============================== | |
122 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
123 | example: | |
124 | ---- | |
125 | # dracut --drivers "kmodule1 kmodule2" ... | |
126 | ---- | |
127 | =============================== | |
128 | ||
129 | **--add-drivers** _<list of kernel modules>_:: | |
130 | specify a space-separated list of kernel modules to add to the initramfs. | |
131 | The kernel modules have to be specified without the ".ko" suffix. This | |
132 | parameter can be specified multiple times. | |
133 | + | |
134 | [NOTE] | |
135 | =============================== | |
136 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
137 | example: | |
138 | ---- | |
139 | # dracut --add-drivers "kmodule1 kmodule2" ... | |
140 | ---- | |
141 | =============================== | |
cea907f6 TR |
142 | |
143 | **--force-drivers** _<list of kernel modules>_:: | |
144 | See add-drivers above. But in this case it is ensured that the drivers | |
145 | are tried to be loaded early via modprobe. | |
146 | + | |
147 | [NOTE] | |
148 | =============================== | |
149 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
150 | example: | |
151 | ---- | |
152 | # dracut --force-drivers "kmodule1 kmodule2" ... | |
153 | ---- | |
154 | =============================== | |
888d53f2 HH |
155 | |
156 | **--omit-drivers** _<list of kernel modules>_:: | |
157 | specify a space-separated list of kernel modules not to add to the | |
158 | initramfs. | |
159 | The kernel modules have to be specified without the ".ko" suffix. This | |
160 | parameter can be specified multiple times. | |
161 | + | |
162 | [NOTE] | |
163 | =============================== | |
164 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
165 | example: | |
166 | ---- | |
167 | # dracut --omit-drivers "kmodule1 kmodule2" ... | |
168 | ---- | |
169 | =============================== | |
170 | ||
171 | **--filesystems** _<list of filesystems>_:: | |
172 | specify a space-separated list of kernel filesystem modules to exclusively | |
173 | include in the generic initramfs. This parameter can be specified multiple | |
174 | times. | |
18595ced | 175 | + |
888d53f2 HH |
176 | [NOTE] |
177 | =============================== | |
178 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
179 | example: | |
180 | ---- | |
181 | # dracut --filesystems "filesystem1 filesystem2" ... | |
182 | ---- | |
183 | =============================== | |
184 | ||
185 | **-k, --kmoddir** _<kernel directory>_:: | |
186 | specify the directory, where to look for kernel modules | |
187 | ||
188 | **--fwdir** _<dir>[:<dir>...]++_:: | |
189 | specify additional directories, where to look for firmwares. This parameter | |
190 | can be specified multiple times. | |
191 | ||
d20fb951 HH |
192 | **--kernel-cmdline <parameters>**:: |
193 | specify default kernel command line parameters | |
194 | ||
195 | ||
888d53f2 HH |
196 | **--kernel-only**:: |
197 | only install kernel drivers and firmware files | |
198 | ||
199 | **--no-kernel**:: | |
200 | do not install kernel drivers and firmware files | |
201 | ||
b7c770e1 DS |
202 | **--early-microcode**:: |
203 | Combine early microcode with ramdisk | |
204 | ||
205 | **--no-early-microcode**:: | |
206 | Do not combine early microcode with ramdisk | |
207 | ||
1743473b HH |
208 | **--print-cmdline**:: |
209 | print the kernel command line for the current disk layout | |
210 | ||
888d53f2 HH |
211 | **--mdadmconf**:: |
212 | include local _/etc/mdadm.conf_ | |
213 | ||
214 | **--nomdadmconf**:: | |
215 | do not include local _/etc/mdadm.conf_ | |
216 | ||
217 | **--lvmconf**:: | |
218 | include local _/etc/lvm/lvm.conf_ | |
219 | ||
220 | **--nolvmconf**:: | |
221 | do not include local _/etc/lvm/lvm.conf_ | |
222 | ||
223 | **--fscks** [LIST]:: | |
224 | add a space-separated list of fsck tools, in addition to _dracut.conf_'s | |
225 | specification; the installation is opportunistic (non-existing tools are | |
226 | ignored) | |
227 | + | |
228 | [NOTE] | |
229 | =============================== | |
230 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
231 | example: | |
232 | ---- | |
233 | # dracut --fscks "fsck.foo barfsck" ... | |
234 | ---- | |
235 | =============================== | |
236 | ||
237 | **--nofscks**:: | |
238 | inhibit installation of any fsck tools | |
239 | ||
240 | **--strip**:: | |
6c128565 | 241 | strip binaries in the initramfs (default) |
888d53f2 HH |
242 | |
243 | **--nostrip**:: | |
6c128565 | 244 | do not strip binaries in the initramfs |
04d18f55 HH |
245 | |
246 | **--hardlink**:: | |
247 | hardlink files in the initramfs (default) | |
248 | ||
249 | **--nohardlink**:: | |
250 | do not hardlink files in the initramfs | |
888d53f2 HH |
251 | |
252 | **--prefix** _<dir>_:: | |
253 | prefix initramfs files with the specified directory | |
254 | ||
255 | **--noprefix**:: | |
256 | do not prefix initramfs files (default) | |
257 | ||
888d53f2 HH |
258 | **-h, --help**:: |
259 | display help text and exit. | |
260 | ||
261 | **--debug**:: | |
262 | output debug information of the build process | |
263 | ||
264 | **-v, --verbose**:: | |
265 | increase verbosity level (default is info(4)) | |
266 | ||
267 | **-q, --quiet**:: decrease verbosity level (default is info(4)) | |
268 | ||
269 | **-c, --conf** _<dracut configuration file>_:: | |
270 | specify configuration file to use. | |
271 | + | |
272 | Default: | |
273 | _/etc/dracut.conf_ | |
274 | ||
275 | **--confdir** _<configuration directory>_:: | |
276 | specify configuration directory to use. | |
277 | + | |
278 | Default: | |
279 | _/etc/dracut.conf.d_ | |
280 | ||
4dd68ca4 AŻ |
281 | **--tmpdir** _<temporary directory>_:: |
282 | specify temporary directory to use. | |
283 | + | |
284 | Default: | |
285 | _/var/tmp_ | |
286 | ||
4efcd19a BZ |
287 | **-r, --sysroot** _<sysroot directory>_:: |
288 | specify the sysroot directory to collect files from. | |
289 | This is useful to create the initramfs image from | |
290 | a cross-compiled sysroot directory. For the extra helper | |
291 | variables, see *ENVIRONMENT* below. | |
292 | + | |
293 | Default: | |
294 | _empty_ | |
295 | ||
888d53f2 HH |
296 | **--sshkey** _<sshkey file>_:: ssh key file used with ssh-client module. |
297 | ||
ee54b840 HR |
298 | **--logfile** _<logfile>_:: logfile to use; overrides any setting from |
299 | the configuration files. | |
300 | + | |
301 | Default: | |
302 | _/var/log/dracut.log_ | |
303 | ||
888d53f2 HH |
304 | **-l, --local**:: |
305 | activates the local mode. dracut will use modules from the current working | |
306 | directory instead of the system-wide installed modules in | |
307 | _/usr/lib/dracut/modules.d_. | |
308 | This is useful when running dracut from a git checkout. | |
309 | ||
310 | **-H, --hostonly**:: | |
1d97bb8b AŻ |
311 | Host-Only mode: Install only what is needed for booting the local host |
312 | instead of a generic host and generate host-specific configuration. | |
888d53f2 HH |
313 | + |
314 | [WARNING] | |
315 | ==== | |
0cec2304 HH |
316 | If chrooted to another root other than the real root device, use "--fstab" and |
317 | provide a valid _/etc/fstab_. | |
888d53f2 HH |
318 | ==== |
319 | ||
472189da | 320 | **-N, --no-hostonly**:: |
cb74b382 HH |
321 | Disable Host-Only mode |
322 | ||
ab9457ef HH |
323 | **--hostonly-cmdline**: |
324 | Store kernel command line arguments needed in the initramfs | |
325 | ||
326 | **--no-hostonly-cmdline**: | |
327 | Do not store kernel command line arguments needed in the initramfs | |
328 | ||
37f2fe55 XP |
329 | **--no-hostonly-default-device**: |
330 | Do not generate implicit host devices like root, swap, fstab, etc. | |
331 | Use "--mount" or "--add-device" to explicitly add devices as needed. | |
332 | ||
fe6455a6 HH |
333 | **--hostonly-i18n**: |
334 | Install only needed keyboard and font files according to the host configuration (default). | |
335 | ||
336 | **--no-hostonly-i18n**: | |
337 | Install all keyboard and font files available. | |
338 | ||
b6c89768 | 339 | **--persistent-policy** _<policy>_:: |
324ea606 HH |
340 | Use _<policy>_ to address disks and partitions. |
341 | _<policy>_ can be any directory name found in /dev/disk. | |
342 | E.g. "by-uuid", "by-label" | |
343 | ||
888d53f2 HH |
344 | **--fstab**:: |
345 | Use _/etc/fstab_ instead of _/proc/self/mountinfo_. | |
346 | ||
b6c89768 | 347 | **--add-fstab** _<filename>_:: |
888d53f2 HH |
348 | Add entries of _<filename>_ to the initramfs /etc/fstab. |
349 | ||
5f6a495b DY |
350 | **--mount** "_<device>_ _<mountpoint>_ _<filesystem type>_ [_<filesystem options>_ [_<dump frequency>_ [_<fsck order>_]]]":: |
351 | Mount _<device>_ on _<mountpoint>_ with _<filesystem type>_ in the | |
352 | initramfs. _<filesystem options>_, _<dump options>_ and _<fsck order>_ can | |
353 | be specified, see fstab manpage for the details. | |
354 | The default _<filesystem options>_ is "defaults". | |
355 | The default _<dump frequency>_ is "0". | |
356 | the default _<fsck order>_ is "2". | |
888d53f2 | 357 | |
edbd9ca0 FV |
358 | **--mount** "_<mountpoint>_":: |
359 | Like above, but _<device>_, _<filesystem type>_ and _<filesystem options>_ | |
360 | are determined by looking at the current mounts. | |
361 | ||
c586b033 CG |
362 | **--add-device** _<device>_ :: |
363 | Bring up _<device>_ in initramfs, _<device>_ should be the device name. | |
364 | This can be useful in hostonly mode for resume support when your swap is on | |
365 | LVM or an encrypted partition. | |
366 | [NB --device can be used for compatibility with earlier releases] | |
52f1b041 | 367 | |
b6c89768 | 368 | **-i, --include** _<SOURCE>_ _<TARGET>_:: |
888d53f2 HH |
369 | include the files in the SOURCE directory into the |
370 | TARGET directory in the final initramfs. If SOURCE is a file, it will be | |
371 | installed to TARGET in the final initramfs. This parameter can be specified | |
372 | multiple times. | |
373 | ||
b6c89768 | 374 | **-I, --install** _<file list>_:: |
888d53f2 HH |
375 | install the space separated list of files into the initramfs. |
376 | + | |
377 | [NOTE] | |
378 | =============================== | |
379 | If [LIST] has multiple arguments, then you have to put these in quotes. For | |
380 | example: | |
888d53f2 HH |
381 | ---- |
382 | # dracut --install "/bin/foo /sbin/bar" ... | |
383 | ---- | |
384 | =============================== | |
385 | ||
54b68829 HH |
386 | **--install-optional** _<file list>_:: |
387 | install the space separated list of files into the initramfs, if they exist. | |
388 | ||
888d53f2 HH |
389 | **--gzip**:: |
390 | Compress the generated initramfs using gzip. This will be done by default, | |
391 | unless another compression option or --no-compress is passed. Equivalent to | |
392 | "--compress=gzip -9" | |
393 | ||
394 | **--bzip2**:: | |
395 | Compress the generated initramfs using bzip2. | |
396 | + | |
397 | [WARNING] | |
398 | ==== | |
399 | Make sure your kernel has bzip2 decompression support compiled in, otherwise you | |
400 | will not be able to boot. Equivalent to "--compress=bzip2" | |
401 | ==== | |
402 | ||
403 | **--lzma**:: | |
404 | Compress the generated initramfs using lzma. | |
405 | + | |
406 | [WARNING] | |
407 | ==== | |
408 | Make sure your kernel has lzma decompression support compiled in, otherwise you | |
ea3c4e82 | 409 | will not be able to boot. Equivalent to "lzma --compress=lzma -9" |
888d53f2 HH |
410 | ==== |
411 | ||
412 | **--xz**:: | |
413 | Compress the generated initramfs using xz. | |
414 | + | |
415 | [WARNING] | |
416 | ==== | |
417 | Make sure your kernel has xz decompression support compiled in, otherwise you | |
ef9ddb91 HH |
418 | will not be able to boot. Equivalent to |
419 | "lzma --compress=xz --check=crc32 --lzma2=dict=1MiB" | |
888d53f2 HH |
420 | ==== |
421 | ||
871c8e40 | 422 | **--lzo**:: |
423 | Compress the generated initramfs using lzop. | |
424 | [WARNING] | |
425 | ==== | |
426 | Make sure your kernel has lzo decompression support compiled in, otherwise you | |
427 | will not be able to boot. | |
428 | ==== | |
429 | ||
430 | **--lz4**:: | |
431 | Compress the generated initramfs using lz4. | |
432 | [WARNING] | |
433 | ==== | |
434 | Make sure your kernel has lz4 decompression support compiled in, otherwise you | |
435 | will not be able to boot. | |
436 | ==== | |
437 | ||
7dbadcc7 TPG |
438 | **--zstd**:: |
439 | Compress the generated initramfs using Zstandard. | |
440 | [WARNING] | |
441 | ==== | |
442 | Make sure your kernel has zstd decompression support compiled in, otherwise you | |
443 | will not be able to boot. | |
444 | ==== | |
445 | ||
888d53f2 HH |
446 | **--compress** _<compressor>_:: |
447 | Compress the generated initramfs using the passed compression program. If | |
448 | you pass it just the name of a compression program, it will call that | |
449 | program with known-working arguments. If you pass a quoted string with | |
450 | arguments, it will be called with exactly those arguments. Depending on what | |
451 | you pass, this may result in an initramfs that the kernel cannot decompress. | |
bd98b884 | 452 | The default value can also be set via the _INITRD_COMPRESS_ environment variable. |
888d53f2 HH |
453 | |
454 | **--no-compress**:: | |
455 | Do not compress the generated initramfs. This will override any other | |
456 | compression options. | |
457 | ||
80626ded HH |
458 | **--reproducible**:: |
459 | Create reproducible images. | |
460 | ||
4a6c14f9 HH |
461 | **--no-reproducible**:: |
462 | Do not create reproducible images. | |
463 | ||
888d53f2 HH |
464 | **--list-modules**:: |
465 | List all available dracut modules. | |
466 | ||
467 | **-M, --show-modules**:: | |
468 | Print included module's name to standard output during build. | |
469 | ||
470 | **--keep**:: | |
471 | Keep the initramfs temporary directory for debugging purposes. | |
472 | ||
ea3c4e82 HH |
473 | **--printsize**:: |
474 | Print out the module install size | |
475 | ||
476 | **--profile**: | |
477 | Output profile information of the build process | |
478 | ||
479 | **--ro-mnt**: | |
480 | Mount / and /usr read-only by default. | |
481 | ||
482 | **-L, --stdlog** _<level>_:: | |
483 | [0-6] Specify logging level (to standard error) | |
484 | ---- | |
485 | 0 - suppress any messages | |
486 | 1 - only fatal errors | |
487 | 2 - all errors | |
488 | 3 - warnings | |
489 | 4 - info | |
490 | 5 - debug info (here starts lots of output) | |
491 | 6 - trace info (and even more) | |
492 | ---- | |
493 | ||
7d848c55 | 494 | **--regenerate-all**:: |
ef9ddb91 HH |
495 | Regenerate all initramfs images at the default location with the kernel |
496 | versions found on the system. Additional parameters are passed through. | |
7d848c55 | 497 | |
ca96509c | 498 | **--loginstall _<DIR>_**:: |
37383f71 HH |
499 | Log all files installed from the host to _<DIR>_. |
500 | ||
ca96509c | 501 | **--uefi**:: |
636d2d46 | 502 | Instead of creating an initramfs image, dracut will create an UEFI executable, |
5c57209b HH |
503 | which can be executed by an UEFI BIOS. The default output filename is |
504 | _<EFI>/EFI/Linux/linux-$kernel$-<MACHINE_ID>-<BUILD_ID>.efi_. <EFI> might be | |
505 | _/efi_, _/boot_ or _/boot/efi_ depending on where the ESP partition is mounted. | |
506 | The <BUILD_ID> is taken from BUILD_ID in _/usr/lib/os-release_ or if it exists | |
507 | _/etc/os-release_ and is left out, if BUILD_ID is non-existant or empty. | |
508 | ||
509 | **--no-machineid**:: | |
510 | affects the default output filename of **--uefi** and will discard the <MACHINE_ID> | |
511 | part. | |
636d2d46 | 512 | |
ca96509c | 513 | **--uefi-stub _<FILE>_**:: |
636d2d46 HH |
514 | Specifies the UEFI stub loader, which will load the attached kernel, initramfs and |
515 | kernel command line and boots the kernel. The default is | |
53475faa HH |
516 | _$prefix/lib/systemd/boot/efi/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_ |
517 | or _$prefix/lib/gummiboot/linux<EFI-MACHINE-TYPE-NAME>.efi.stub_ | |
636d2d46 | 518 | |
ca96509c | 519 | **--kernel-image _<FILE>_**:: |
636d2d46 HH |
520 | Specifies the kernel image, which to include in the UEFI executable. The default is |
521 | _/lib/modules/<KERNEL-VERSION>/vmlinuz_ or _/boot/vmlinuz-<KERNEL-VERSION>_ | |
522 | ||
bd98b884 HH |
523 | ENVIRONMENT |
524 | ----------- | |
525 | ||
526 | _INITRD_COMPRESS_:: | |
527 | sets the default compression program. See **--compress**. | |
528 | ||
4efcd19a BZ |
529 | _DRACUT_LDCONFIG_:: |
530 | sets the _ldconfig_ program path and options. Optional. | |
531 | Used for **--sysroot**. | |
532 | + | |
533 | Default: | |
534 | _ldconfig_ | |
535 | ||
536 | _DRACUT_LDD_:: | |
537 | sets the _ldd_ program path and options. Optional. | |
538 | Used for **--sysroot**. | |
539 | + | |
540 | Default: | |
541 | _ldd_ | |
542 | ||
543 | _DRACUT_TESTBIN_:: | |
544 | sets the initially tested binary for detecting library paths. | |
545 | Optional. Used for **--sysroot**. In the cross-compiled sysroot, | |
546 | the default value (_/bin/sh_) is unusable, as it is an absolute | |
547 | symlink and points outside the sysroot directory. | |
548 | + | |
549 | Default: | |
550 | _/bin/sh_ | |
551 | ||
552 | _DRACUT_INSTALL_:: | |
553 | overrides path and options for executing _dracut-install_ internally. | |
554 | Optional. Can be used to debug _dracut-install_ while running the | |
555 | main dracut script. | |
556 | + | |
557 | Default: | |
558 | _dracut-install_ | |
559 | + | |
560 | Example: | |
561 | DRACUT_INSTALL="valgrind dracut-install" | |
562 | ||
563 | _DRACUT_COMPRESS_BZIP2_:: | |
564 | _DRACUT_COMPRESS_BZIP2_:: | |
565 | _DRACUT_COMPRESS_LBZIP2_:: | |
566 | _DRACUT_COMPRESS_LZMA_:: | |
567 | _DRACUT_COMPRESS_XZ_:: | |
568 | _DRACUT_COMPRESS_GZIP_:: | |
569 | _DRACUT_COMPRESS_PIGZ_:: | |
570 | _DRACUT_COMPRESS_LZOP_:: | |
571 | _DRACUT_COMPRESS_ZSTD_:: | |
572 | _DRACUT_COMPRESS_LZ4_:: | |
573 | _DRACUT_COMPRESS_CAT_:: | |
574 | overrides for compression utilities to support using them from | |
575 | non-standard paths. | |
576 | + | |
577 | Default values are the default compression utility names to be found in **PATH**. | |
578 | ||
579 | _DRACUT_ARCH_:: | |
580 | overrides the value of **uname -m**. Used for **--sysroot**. | |
581 | + | |
582 | Default: | |
583 | _empty_ (the value of **uname -m** on the host system) | |
584 | ||
585 | _SYSTEMD_VERSION_:: | |
586 | overrides systemd version. Used for **--sysroot**. | |
587 | ||
588 | _DRACUT_INSTALL_PATH_:: | |
589 | overrides **PATH** environment for **dracut-install** to look for | |
590 | binaries relative to **--sysroot**. In a cross-compiled environment | |
591 | (e.g. Yocto), PATH points to natively built binaries that are not | |
592 | in the host's /bin, /usr/bin, etc. **dracut-install** still needs plain | |
593 | /bin and /usr/bin that are relative to the cross-compiled sysroot. | |
594 | + | |
595 | Default: | |
596 | _PATH_ | |
597 | ||
598 | _DRACUT_INSTALL_LOG_TARGET_:: | |
599 | overrides **DRACUT_LOG_TARGET** for **dracut-install**. It allows | |
600 | running **dracut-install* to run with different log target that | |
601 | **dracut** runs with. | |
602 | + | |
603 | Default: | |
604 | _DRACUT_LOG_TARGET_ | |
605 | ||
606 | _DRACUT_INSTALL_LOG_LEVEL_:: | |
607 | overrides **DRACUT_LOG_LEVEL** for **dracut-install**. It allows | |
608 | running **dracut-install* to run with different log level that | |
609 | **dracut** runs with. | |
610 | + | |
611 | Default: | |
612 | _DRACUT_LOG_LEVEL_ | |
613 | ||
888d53f2 HH |
614 | FILES |
615 | ----- | |
616 | _/var/log/dracut.log_:: | |
617 | logfile of initramfs image creation | |
618 | ||
619 | _/tmp/dracut.log_:: | |
620 | logfile of initramfs image creation, if _/var/log/dracut.log_ is not | |
621 | writable | |
622 | ||
623 | _/etc/dracut.conf_:: | |
624 | see dracut.conf5 | |
625 | ||
626 | _/etc/dracut.conf.d/*.conf_:: | |
627 | see dracut.conf5 | |
628 | ||
c4e098a5 HH |
629 | _/usr/lib/dracut/dracut.conf.d/*.conf_:: |
630 | see dracut.conf5 | |
631 | ||
888d53f2 HH |
632 | Configuration in the initramfs |
633 | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
634 | _/etc/conf.d/_:: | |
635 | Any files found in _/etc/conf.d/_ will be sourced in the initramfs to | |
636 | set initial values. Command line options will override these values | |
637 | set in the configuration files. | |
638 | ||
639 | _/etc/cmdline_:: | |
ef9ddb91 HH |
640 | Can contain additional command line options. Deprecated, better use |
641 | /etc/cmdline.d/*.conf. | |
3cff5fb5 | 642 | |
b6c89768 | 643 | _/etc/cmdline.d/*.conf_:: |
888d53f2 HH |
644 | Can contain additional command line options. |
645 | ||
646 | AVAILABILITY | |
647 | ------------ | |
648 | The dracut command is part of the dracut package and is available from | |
649 | link:$$https://dracut.wiki.kernel.org$$[https://dracut.wiki.kernel.org] | |
650 | ||
651 | AUTHORS | |
652 | ------- | |
9f355169 | 653 | Harald Hoyer |
888d53f2 | 654 | |
9f355169 | 655 | Victor Lowther |
888d53f2 | 656 | |
9f355169 | 657 | Philippe Seewer |
888d53f2 | 658 | |
9f355169 | 659 | Warren Togami |
888d53f2 | 660 | |
9f355169 | 661 | Amadeusz Żołnowski |
888d53f2 | 662 | |
9f355169 | 663 | Jeremy Katz |
888d53f2 | 664 | |
9f355169 | 665 | David Dillow |
888d53f2 | 666 | |
9f355169 | 667 | Will Woods |
888d53f2 HH |
668 | |
669 | SEE ALSO | |
670 | -------- | |
820f8101 | 671 | *dracut.cmdline*(7) *dracut.conf*(5) *lsinitrd*(1) |