Re: [PATCH v4 00/10] Add support for dracut

["'Jan Kiszka' via isar-users" <isar-users@googlegroups.com>]

On 22.10.25 17:06, Quirin Gylstorff wrote:
> From: Quirin Gylstorff <quirin.gylstorff@siemens.com>
> 
> Debian intends to change the default initrd generator from
> initramfs-tools to dracut[1],[2].
> 
> This is a first draft to support multiple initrd generator in
> ISAR. I tested it with bookworm and trixie.
> 
> You can switch a normal Debian version to a dracut based initrd
> by installing the package `dracut`. This similar to a normal Debian
> installation.
> 
> Customizing the initrd generation should be done with a seperate recipe
> which inherit `initrd-dracut`. This is intentionally done to avoid
> installing packages which are only used by the initrd generation process.
> 
> [1]: https://salsa.debian.org/kernel-team/meetings/-/wikis/20250730
> [2]: https://meetbot.debian.net/debian-kernel/2025/debian-kernel.2025-08-06-19.00.log.html
> 
> Changes v4:
>  - fix extra_modules and extra_drivers
>  - extend user_manual to switch normal installation to dracut
> 
> Changes v3:
>  - drop initramfs patch
>  - add examples
>  - add user_manual section
> 
> Changes v2:
>  - extract the initramfs-cmd from the cmdline
>  - increase version of enable-fsck
>  - add function to print an error in case a invalid package is installed
> 
> Quirin Gylstorff (10):
>   add dracut to custom kernel builds
>   rootfs: Allow to overwrite the initramfs generation cmds
>   rootfs Add dracut to initramfs generator
>   initramfs: allow to set the generator command
>   Add class to generate custom dracut initramfs
>   rootfs: add flag to use dracut if it is not part of the package list
>   Add example dracut initramfs
>   Add dracut module helper
>   Use lighttpd as a example how to add a dracut module
>   user_manual: Add dracut for initramfs generation
> 
>  doc/user_manual.md                            | 51 ++++++++++++++++--
>  .../dracut-example-lighttpd_0.1.bb            | 26 ++++++++++
>  .../dracut-example-lighttpd/files/install.sh  | 21 ++++++++
>  .../files/lighttpd.conf                       | 52 +++++++++++++++++++
>  .../files/lighttpd.service                    | 13 +++++
>  .../files/sysuser-lighttpd.conf               |  3 ++
>  .../recipes-initramfs/images/isar-dracut.bb   | 20 +++++++
>  meta/classes/initramfs.bbclass                | 19 ++++++-
>  meta/classes/initrd-dracut.bbclass            | 49 +++++++++++++++++
>  meta/classes/rootfs.bbclass                   | 17 ++++--
>  .../dracut-module/dracut-module.inc           | 41 +++++++++++++++
>  .../dracut-module/files/module-setup.sh.tmpl  | 20 +++++++
>  meta/recipes-kernel/linux/linux-custom.inc    |  2 +-
>  13 files changed, 324 insertions(+), 10 deletions(-)
>  create mode 100644 meta-isar/recipes-initramfs/dracut-example-lighttpd/dracut-example-lighttpd_0.1.bb
>  create mode 100644 meta-isar/recipes-initramfs/dracut-example-lighttpd/files/install.sh
>  create mode 100644 meta-isar/recipes-initramfs/dracut-example-lighttpd/files/lighttpd.conf
>  create mode 100644 meta-isar/recipes-initramfs/dracut-example-lighttpd/files/lighttpd.service
>  create mode 100644 meta-isar/recipes-initramfs/dracut-example-lighttpd/files/sysuser-lighttpd.conf
>  create mode 100644 meta-isar/recipes-initramfs/images/isar-dracut.bb
>  create mode 100644 meta/classes/initrd-dracut.bbclass
>  create mode 100644 meta/recipes-initramfs/dracut-module/dracut-module.inc
>  create mode 100644 meta/recipes-initramfs/dracut-module/files/module-setup.sh.tmpl
> 

General style remarks:

 - lots of every new-lines at EOF
 - lots of missing newlines elsewhere between those two

   VARIABLE = "value"
   do_something {

Repeating pattern...

Jan

-- 
Siemens AG, Foundational Technologies
Linux Expert Center

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