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Renaud Métrich b9ba3c8bb8 fix(shutdown): be robust against forced shutdown 
When a forced shutdown is issued through sending a burst of Ctrl-Alt-Del
keys, systemd sends SIGTERM to all processes. This ends up killing
dracut-initramfs-restore as well, preventing the script from detecting
that the unpack of the initramfs is incomplete, which later causes a
crash to happen when "shutdown" tries to execute from the unpacked
initramfs.

This fix makes sure dracut-initramfs-restore remains alive to detect
the unpack failed (because cpio was killed by systemd too).

Refs:
 * https://bugzilla.redhat.com/show_bug.cgi?id=2023665
 		2021-11-16 18:29:32 +00:00
.github ci: run the integration tests on more distributions 2021-05-14 13:08:07 +02:00
docs chore: change my email address 2021-10-13 09:07:39 +02:00
dracut.conf.d ci(suse.conf.example): change default compression option for SUSE 2021-09-11 06:44:40 +00:00
install.d chore(tree): move kernel install files into its own directory 2021-05-04 09:24:16 +02:00
man chore: change my email address 2021-10-13 09:07:39 +02:00
modules.d fix(90kernel-modules): add isp1760 USB controller 2021-10-28 08:52:03 +02:00
pkgbuild feat(systemd-sysext): introducing the systemd-sysext module 2021-05-14 11:35:34 +02:00
shell-completion/bash chore(tree): move shell completion into a directory 2021-05-04 09:22:22 +02:00
src fix(install): segfault on popen error 2021-11-09 07:01:25 +00:00
test test: don't use `-cpu max` in GH Actions 2021-11-15 11:37:22 +00:00
tools test: don't use `-cpu max` in GH Actions 2021-11-15 11:37:22 +00:00
.astylerc style: use astyle instead of indent 2021-03-15 15:37:08 +01:00
.dir-locals.el fix: set vimrc and emacs indention according to .editorconfig 2021-03-13 20:10:43 +01:00
.editorconfig feat: customize .editorconfig according to shfmt 2021-03-13 20:10:43 +01:00
.gitignore chore(.gitignore): update src and man paths 2021-10-02 06:57:28 +00:00
.kateconfig add kate and emacs per directory config files 2014-08-29 13:38:47 +02:00
.kateproject kate config 2016-04-15 10:27:48 +02:00
.mailmap chore: change my email address 2021-10-13 09:07:39 +02:00
.packit.yml fix(packit): downstream has renamed the master branch to main 2021-05-14 15:50:38 +02:00
.shellcheckrc fix: shellcheck 0.7.2 2021-05-05 14:55:30 +02:00
.vimrc fix: set vimrc and emacs indention according to .editorconfig 2021-03-13 20:10:43 +01:00
AUTHORS docs: update NEWS.md and AUTHORS 2021-05-27 14:34:19 +02:00
COPYING COPYING: updated to recent version of http://www.gnu.org/licenses/gpl-2.0.txt 2012-08-01 15:53:25 +02:00
Makefile chore(tree): move html files to the dosc directory 2021-05-06 16:59:14 +02:00
NEWS.md docs: update NEWS.md and AUTHORS 2021-05-27 14:34:19 +02:00
README.md docs: fix CI badges in README 2021-02-10 14:39:11 +01:00
configure style: shfmt reformat 2021-03-13 20:10:43 +01:00
dracut-catimages.sh style: shfmt reformat 2021-03-13 20:10:43 +01:00
dracut-functions.sh fix(kernel-modules): detect block device's hardware driver 2021-08-13 11:36:25 +00:00
dracut-init.sh feat: support ZSTD-compressed kernel modules 2021-05-04 15:55:19 +00:00
dracut-initramfs-restore.sh fix(shutdown): be robust against forced shutdown 2021-11-16 18:29:32 +00:00
dracut-logger.sh fix(dracut-logger.sh): double dash trigger unknown logger warnings during run 2021-04-15 12:58:49 +02:00
dracut.conf dracut.conf: remove example parameters 2015-07-09 15:36:25 +02:00
dracut.sh feat(dracut.sh): check if target kernel has zstd support compiled in 2021-09-11 06:44:40 +00:00
lsinitrd.sh fix(lsinitrd.sh): shellcheck for lsinitrd.sh 2021-03-30 12:59:06 +02:00

README.md

dracut

dracut is an event driven initramfs infrastructure.

Contributor Covenant Fedora-32 Fedora-33 Fedora-latest

dracut (the tool) is used to create an initramfs image by copying tools and files from an installed system and combining it with the dracut framework, usually found in /usr/lib/dracut/modules.d.

Unlike other implementations, dracut hard-codes as little as possible into the initramfs. The initramfs has (basically) one purpose in life -- getting the rootfs mounted so that we can transition to the real rootfs. This is all driven off of device availability. Therefore, instead of scripts hard-coded to do various things, we depend on udev to create device nodes for us and then when we have the rootfs's device node, we mount and carry on. This helps to keep the time required in the initramfs as little as possible so that things like a 5 second boot aren't made impossible as a result of the very existence of an initramfs.

Most of the initramfs generation functionality in dracut is provided by a bunch of generator modules that are sourced by the main dracut script to install specific functionality into the initramfs. They live in the modules.d subdirectory, and use functionality provided by dracut-functions to do their work.

Currently dracut lives on github.com and kernel.org.

The tarballs can be found here: http://www.kernel.org/pub/linux/utils/boot/dracut/ ftp://ftp.kernel.org/pub/linux/utils/boot/dracut/

Git: https://github.com/dracutdevs/dracut.git http://git.kernel.org/?p=boot/dracut/dracut.git

Project Documentation: http://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html

Project Wiki: http://dracut.wiki.kernel.org

See the github issue tracker for things which still need to be done and HACKING.md for some instructions on how to get started. There is also a mailing list that is being used for the discussion -- initramfs@vger.kernel.org. It is a typical vger list, send mail to majordomo@vger.kernel.org with body of 'subscribe initramfs email@host.com'

Licensed under the GPLv2