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1 | dracut |
2 | ==== | |
7e8f8ddb | 3 | |
ce0344d3 | 4 | dracut is an event driven initramfs infrastructure. |
1363167d | 5 | |
1ed4b9f1 | 6 | [![Contributor Covenant](https://img.shields.io/badge/Contributor%20Covenant-v2.0%20adopted-ff69b4.svg)](.github/CODE_OF_CONDUCT.md) |
871d63c3 | 7 | [![Fedora-32](https://github.com/dracutdevs/dracut/workflows/Fedora-32/badge.svg?branch=master)](https://github.com/dracutdevs/dracut/actions?query=workflow%3AFedora-32) |
b56448ba HH |
8 | [![Fedora-33](https://github.com/dracutdevs/dracut/workflows/Fedora-33/badge.svg?branch=master)](https://github.com/dracutdevs/dracut/actions?query=workflow%3AFedora-33) |
9 | [![Fedora-latest](https://github.com/dracutdevs/dracut/workflows/Fedora-latest/badge.svg?branch=master)](https://github.com/dracutdevs/dracut/actions?query=workflow%3AFedora-latest) | |
1363167d | 10 | |
ce0344d3 CW |
11 | dracut (the tool) is used to create an initramfs image by copying tools |
12 | and files from an installed system and combining it with the | |
13 | dracut framework, usually found in /usr/lib/dracut/modules.d. | |
14 | ||
871d63c3 HH |
15 | Unlike other implementations, dracut hard-codes as little |
16 | as possible into the initramfs. The initramfs has | |
ce0344d3 CW |
17 | (basically) one purpose in life -- getting the rootfs mounted so that |
18 | we can transition to the real rootfs. This is all driven off of | |
19 | device availability. Therefore, instead of scripts hard-coded to do | |
20 | various things, we depend on udev to create device nodes for us and | |
21 | then when we have the rootfs's device node, we mount and carry on. | |
22 | This helps to keep the time required in the initramfs as little as | |
23 | possible so that things like a 5 second boot aren't made impossible as | |
871d63c3 | 24 | a result of the very existence of an initramfs. |
ce0344d3 CW |
25 | |
26 | Most of the initramfs generation functionality in dracut is provided by a bunch | |
27 | of generator modules that are sourced by the main dracut script to install | |
28 | specific functionality into the initramfs. They live in the modules.d | |
29 | subdirectory, and use functionality provided by dracut-functions to do their | |
30 | work. | |
31 | ||
ce0344d3 CW |
32 | Currently dracut lives on github.com and kernel.org. |
33 | ||
34 | The tarballs can be found here: | |
35 | http://www.kernel.org/pub/linux/utils/boot/dracut/ | |
36 | ftp://ftp.kernel.org/pub/linux/utils/boot/dracut/ | |
37 | ||
38 | Git: | |
1ed4b9f1 | 39 | https://github.com/dracutdevs/dracut.git |
ce0344d3 CW |
40 | http://git.kernel.org/?p=boot/dracut/dracut.git |
41 | ||
42 | Project Documentation: | |
43 | http://www.kernel.org/pub/linux/utils/boot/dracut/dracut.html | |
44 | ||
45 | Project Wiki: | |
46 | http://dracut.wiki.kernel.org | |
47 | ||
1ed4b9f1 HH |
48 | See the github issue tracker for things which still need to be done and HACKING.md |
49 | for some instructions on how to get started. There is also a mailing list | |
ce0344d3 CW |
50 | that is being used for the discussion -- initramfs@vger.kernel.org. |
51 | It is a typical vger list, send mail to majordomo@vger.kernel.org with body | |
52 | of 'subscribe initramfs email@host.com' | |
53 | ||
54 | ||
55 | Licensed under the GPLv2 |