| Message ID | 20251006183214.1593195-6-Quirin.Gylstorff@siemens.com |
|---|---|
| State | RFC |
| Headers | show |
| Series | Add support for dracut | expand |
On Mon, 2025-10-06 at 20:31 +0200, Quirin Gylstorff wrote: > From: Quirin Gylstorff <quirin.gylstorff@siemens.com> > > This class allows to customize a dracut initramfs by using > configuration files add addition modules and drivers. why restricting support for dracut to initramfs image recipes and not supporting a switch to dracut for "normal" rootfs? I believe your patch series provides all the required infrastructure to support both use- cases > > It is recommended to use the addition of modules and drivers > sparely and prefer dracut configuration files. > > This class has the option to add custom modules automatically to > the initramfs if: > - The modules are provided by the ISAR build system > - The module name is part of the package name, valid names are > - dracut-<module-name> > - <module-name>-dracut > - <something>-dracut-<module-name> > > Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com> > --- > meta/classes/initrd-dracut.bbclass | 49 > ++++++++++++++++++++++++++++++ > 1 file changed, 49 insertions(+) > create mode 100644 meta/classes/initrd-dracut.bbclass > > diff --git a/meta/classes/initrd-dracut.bbclass > b/meta/classes/initrd-dracut.bbclass > new file mode 100644 > index 00000000..a06296cc > --- /dev/null > +++ b/meta/classes/initrd-dracut.bbclass > @@ -0,0 +1,49 @@ > +# This software is a part of ISAR. > +# This class provides the necessary options to > +# customize a dracut based initramfs. > +# > +# This class should not provide every dracut cmdline > +# option possible. Use the dracut configuration files. > + > +INITRAMFS_GENERATOR_PKG = "dracut" > + > +# The preferred way to configure dracut is to > +# provide dracut-config-<your-config> package which > +# contains all necessary config options > +DRACUT_CONFIG_PATH ??= "" > +DRACUT_EXTRA_DRIVERS ??= "" > +DRACUT_EXTRA_MODULES ??= "" > +DRACUT_EXTRACT_MODULES_FROM_PACKAGE_NAMES ??= "False" > +def extend_dracut_cmdline(d): > + config_path = d.getVar('DRACUT_CONFIG_PATH') or '' > + extra_drivers = d.getVar('DRACUT_CONFIG_PATH') or '' > + extra_modules = d.getVar('DRACUT_CONFIG_PATH') or '' > + enable_module_extraction = > bb.utils.to_boolean(d.getVar('DRACUT_EXTRACT_MODULES_FROM_PACKAGE_LIS > T')) > + pkg_list = d.getVar('INITRAMFS_INSTALL') or '' > + > + cmdline = [] > + modules_from_pkg_names = [] > + if enable_module_extraction: > + for pkg in pkg_list.split(): > + # Skip dracut-config-* packages > + if pkg.startswith('dracut-config-'): > + continue > + elif pkg.startswith('dracut-'): > + modules_from_pkg_names.append(pkg[7:]) > + elif pkg.endswith('-dracut'): > + modules_from_pkg_names.append(pkg[:-7]) > + elif '-dracut-' in pkg: > + _, module_name = pkg.split('-dracut-', 1) > + modules_from_pkg_names.append(module_name) > + extra_modules = extra_modules + ' ' +' > '.join(modules_from_pkg_names) > + > + if config_path: > + cmdline.append(f"--conf {config_path}") > + if extra_drivers: > + cmdline.append(f"--add-drivers {extra_drivers}") > + if extra_modules: > + cmdline.append(f"--add {extra_modules}") > + return ' '.join(cmdline) > + > +ROOTFS_INITRAMFS_GENERATOR_CMDLINE += "${@ extend_dracut_cmdline()}" > +inherit initramfs
On Mon, 2025-10-06 at 20:31 +0200, Quirin Gylstorff wrote: > From: Quirin Gylstorff <quirin.gylstorff@siemens.com> > > This class allows to customize a dracut initramfs by using > configuration files add addition modules and drivers. > > It is recommended to use the addition of modules and drivers > sparely and prefer dracut configuration files. > > This class has the option to add custom modules automatically to > the initramfs if: > - The modules are provided by the ISAR build system > - The module name is part of the package name, valid names are > - dracut-<module-name> > - <module-name>-dracut > - <something>-dracut-<module-name> > > Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com> > --- > meta/classes/initrd-dracut.bbclass | 49 > ++++++++++++++++++++++++++++++ > 1 file changed, 49 insertions(+) > create mode 100644 meta/classes/initrd-dracut.bbclass > > diff --git a/meta/classes/initrd-dracut.bbclass > b/meta/classes/initrd-dracut.bbclass > new file mode 100644 > index 00000000..a06296cc > --- /dev/null > +++ b/meta/classes/initrd-dracut.bbclass > @@ -0,0 +1,49 @@ > +# This software is a part of ISAR. > +# This class provides the necessary options to > +# customize a dracut based initramfs. > +# > +# This class should not provide every dracut cmdline > +# option possible. Use the dracut configuration files. > + > +INITRAMFS_GENERATOR_PKG = "dracut" > + > +# The preferred way to configure dracut is to > +# provide dracut-config-<your-config> package which > +# contains all necessary config options > +DRACUT_CONFIG_PATH ??= "" > +DRACUT_EXTRA_DRIVERS ??= "" > +DRACUT_EXTRA_MODULES ??= "" > +DRACUT_EXTRACT_MODULES_FROM_PACKAGE_NAMES ??= "False" > +def extend_dracut_cmdline(d): > + config_path = d.getVar('DRACUT_CONFIG_PATH') or '' > + extra_drivers = d.getVar('DRACUT_CONFIG_PATH') or '' > + extra_modules = d.getVar('DRACUT_CONFIG_PATH') or '' > + enable_module_extraction = > bb.utils.to_boolean(d.getVar('DRACUT_EXTRACT_MODULES_FROM_PACKAGE_LIS > T')) > + pkg_list = d.getVar('INITRAMFS_INSTALL') or '' > + > + cmdline = [] > + modules_from_pkg_names = [] > + if enable_module_extraction: > + for pkg in pkg_list.split(): > + # Skip dracut-config-* packages > + if pkg.startswith('dracut-config-'): > + continue > + elif pkg.startswith('dracut-'): > + modules_from_pkg_names.append(pkg[7:]) > + elif pkg.endswith('-dracut'): > + modules_from_pkg_names.append(pkg[:-7]) > + elif '-dracut-' in pkg: > + _, module_name = pkg.split('-dracut-', 1) > + modules_from_pkg_names.append(module_name) > + extra_modules = extra_modules + ' ' +' > '.join(modules_from_pkg_names) > + > + if config_path: > + cmdline.append(f"--conf {config_path}") > + if extra_drivers: > + cmdline.append(f"--add-drivers {extra_drivers}") > + if extra_modules: > + cmdline.append(f"--add {extra_modules}") > + return ' '.join(cmdline) > + > +ROOTFS_INITRAMFS_GENERATOR_CMDLINE += "${@ extend_dracut_cmdline()}" don't we need to pass (d) ? > +inherit initramfs
On 10/9/25 07:22, Hombourger, Cedric (FT FDS CES LX) wrote: > On Mon, 2025-10-06 at 20:31 +0200, Quirin Gylstorff wrote: >> From: Quirin Gylstorff <quirin.gylstorff@siemens.com> >> >> This class allows to customize a dracut initramfs by using >> configuration files add addition modules and drivers. > > why restricting support for dracut to initramfs image recipes and not > supporting a switch to dracut for "normal" rootfs? I believe your patch > series provides all the required infrastructure to support both use- > cases > I didn't test it - but it should be possible to install dracut and it should switch normal rootfs to dracut. This needs to be done by the user. Quirin>> >> It is recommended to use the addition of modules and drivers >> sparely and prefer dracut configuration files. >> >> This class has the option to add custom modules automatically to >> the initramfs if: >> - The modules are provided by the ISAR build system >> - The module name is part of the package name, valid names are >> - dracut-<module-name> >> - <module-name>-dracut >> - <something>-dracut-<module-name> >> >> Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com> >> --- >> meta/classes/initrd-dracut.bbclass | 49 >> ++++++++++++++++++++++++++++++ >> 1 file changed, 49 insertions(+) >> create mode 100644 meta/classes/initrd-dracut.bbclass >> >> diff --git a/meta/classes/initrd-dracut.bbclass >> b/meta/classes/initrd-dracut.bbclass >> new file mode 100644 >> index 00000000..a06296cc >> --- /dev/null >> +++ b/meta/classes/initrd-dracut.bbclass >> @@ -0,0 +1,49 @@ >> +# This software is a part of ISAR. >> +# This class provides the necessary options to >> +# customize a dracut based initramfs. >> +# >> +# This class should not provide every dracut cmdline >> +# option possible. Use the dracut configuration files. >> + >> +INITRAMFS_GENERATOR_PKG = "dracut" >> + >> +# The preferred way to configure dracut is to >> +# provide dracut-config-<your-config> package which >> +# contains all necessary config options >> +DRACUT_CONFIG_PATH ??= "" >> +DRACUT_EXTRA_DRIVERS ??= "" >> +DRACUT_EXTRA_MODULES ??= "" >> +DRACUT_EXTRACT_MODULES_FROM_PACKAGE_NAMES ??= "False" >> +def extend_dracut_cmdline(d): >> + config_path = d.getVar('DRACUT_CONFIG_PATH') or '' >> + extra_drivers = d.getVar('DRACUT_CONFIG_PATH') or '' >> + extra_modules = d.getVar('DRACUT_CONFIG_PATH') or '' >> + enable_module_extraction = >> bb.utils.to_boolean(d.getVar('DRACUT_EXTRACT_MODULES_FROM_PACKAGE_LIS >> T')) >> + pkg_list = d.getVar('INITRAMFS_INSTALL') or '' >> + >> + cmdline = [] >> + modules_from_pkg_names = [] >> + if enable_module_extraction: >> + for pkg in pkg_list.split(): >> + # Skip dracut-config-* packages >> + if pkg.startswith('dracut-config-'): >> + continue >> + elif pkg.startswith('dracut-'): >> + modules_from_pkg_names.append(pkg[7:]) >> + elif pkg.endswith('-dracut'): >> + modules_from_pkg_names.append(pkg[:-7]) >> + elif '-dracut-' in pkg: >> + _, module_name = pkg.split('-dracut-', 1) >> + modules_from_pkg_names.append(module_name) >> + extra_modules = extra_modules + ' ' +' >> '.join(modules_from_pkg_names) >> + >> + if config_path: >> + cmdline.append(f"--conf {config_path}") >> + if extra_drivers: >> + cmdline.append(f"--add-drivers {extra_drivers}") >> + if extra_modules: >> + cmdline.append(f"--add {extra_modules}") >> + return ' '.join(cmdline) >> + >> +ROOTFS_INITRAMFS_GENERATOR_CMDLINE += "${@ extend_dracut_cmdline()}" >> +inherit initramfs > > >
On 10/9/25 08:21, Hombourger, Cedric (FT FDS CES LX) wrote: > On Mon, 2025-10-06 at 20:31 +0200, Quirin Gylstorff wrote: >> From: Quirin Gylstorff <quirin.gylstorff@siemens.com> >> >> This class allows to customize a dracut initramfs by using >> configuration files add addition modules and drivers. >> >> It is recommended to use the addition of modules and drivers >> sparely and prefer dracut configuration files. >> >> This class has the option to add custom modules automatically to >> the initramfs if: >> - The modules are provided by the ISAR build system >> - The module name is part of the package name, valid names are >> - dracut-<module-name> >> - <module-name>-dracut >> - <something>-dracut-<module-name> >> >> Signed-off-by: Quirin Gylstorff <quirin.gylstorff@siemens.com> >> --- >> meta/classes/initrd-dracut.bbclass | 49 >> ++++++++++++++++++++++++++++++ >> 1 file changed, 49 insertions(+) >> create mode 100644 meta/classes/initrd-dracut.bbclass >> >> diff --git a/meta/classes/initrd-dracut.bbclass >> b/meta/classes/initrd-dracut.bbclass >> new file mode 100644 >> index 00000000..a06296cc >> --- /dev/null >> +++ b/meta/classes/initrd-dracut.bbclass >> @@ -0,0 +1,49 @@ >> +# This software is a part of ISAR. >> +# This class provides the necessary options to >> +# customize a dracut based initramfs. >> +# >> +# This class should not provide every dracut cmdline >> +# option possible. Use the dracut configuration files. >> + >> +INITRAMFS_GENERATOR_PKG = "dracut" >> + >> +# The preferred way to configure dracut is to >> +# provide dracut-config-<your-config> package which >> +# contains all necessary config options >> +DRACUT_CONFIG_PATH ??= "" >> +DRACUT_EXTRA_DRIVERS ??= "" >> +DRACUT_EXTRA_MODULES ??= "" >> +DRACUT_EXTRACT_MODULES_FROM_PACKAGE_NAMES ??= "False" >> +def extend_dracut_cmdline(d): >> + config_path = d.getVar('DRACUT_CONFIG_PATH') or '' >> + extra_drivers = d.getVar('DRACUT_CONFIG_PATH') or '' >> + extra_modules = d.getVar('DRACUT_CONFIG_PATH') or '' >> + enable_module_extraction = >> bb.utils.to_boolean(d.getVar('DRACUT_EXTRACT_MODULES_FROM_PACKAGE_LIS >> T')) >> + pkg_list = d.getVar('INITRAMFS_INSTALL') or '' >> + >> + cmdline = [] >> + modules_from_pkg_names = [] >> + if enable_module_extraction: >> + for pkg in pkg_list.split(): >> + # Skip dracut-config-* packages >> + if pkg.startswith('dracut-config-'): >> + continue >> + elif pkg.startswith('dracut-'): >> + modules_from_pkg_names.append(pkg[7:]) >> + elif pkg.endswith('-dracut'): >> + modules_from_pkg_names.append(pkg[:-7]) >> + elif '-dracut-' in pkg: >> + _, module_name = pkg.split('-dracut-', 1) >> + modules_from_pkg_names.append(module_name) >> + extra_modules = extra_modules + ' ' +' >> '.join(modules_from_pkg_names) >> + >> + if config_path: >> + cmdline.append(f"--conf {config_path}") >> + if extra_drivers: >> + cmdline.append(f"--add-drivers {extra_drivers}") >> + if extra_modules: >> + cmdline.append(f"--add {extra_modules}") >> + return ' '.join(cmdline) >> + >> +ROOTFS_INITRAMFS_GENERATOR_CMDLINE += "${@ extend_dracut_cmdline()}" > > don't we need to pass (d) ? > Yes, there is d missing i need to check why in didn't fail my tests. Quirin >> +inherit initramfs > >
diff --git a/meta/classes/initrd-dracut.bbclass b/meta/classes/initrd-dracut.bbclass new file mode 100644 index 00000000..a06296cc --- /dev/null +++ b/meta/classes/initrd-dracut.bbclass @@ -0,0 +1,49 @@ +# This software is a part of ISAR. +# This class provides the necessary options to +# customize a dracut based initramfs. +# +# This class should not provide every dracut cmdline +# option possible. Use the dracut configuration files. + +INITRAMFS_GENERATOR_PKG = "dracut" + +# The preferred way to configure dracut is to +# provide dracut-config-<your-config> package which +# contains all necessary config options +DRACUT_CONFIG_PATH ??= "" +DRACUT_EXTRA_DRIVERS ??= "" +DRACUT_EXTRA_MODULES ??= "" +DRACUT_EXTRACT_MODULES_FROM_PACKAGE_NAMES ??= "False" +def extend_dracut_cmdline(d): + config_path = d.getVar('DRACUT_CONFIG_PATH') or '' + extra_drivers = d.getVar('DRACUT_CONFIG_PATH') or '' + extra_modules = d.getVar('DRACUT_CONFIG_PATH') or '' + enable_module_extraction = bb.utils.to_boolean(d.getVar('DRACUT_EXTRACT_MODULES_FROM_PACKAGE_LIST')) + pkg_list = d.getVar('INITRAMFS_INSTALL') or '' + + cmdline = [] + modules_from_pkg_names = [] + if enable_module_extraction: + for pkg in pkg_list.split(): + # Skip dracut-config-* packages + if pkg.startswith('dracut-config-'): + continue + elif pkg.startswith('dracut-'): + modules_from_pkg_names.append(pkg[7:]) + elif pkg.endswith('-dracut'): + modules_from_pkg_names.append(pkg[:-7]) + elif '-dracut-' in pkg: + _, module_name = pkg.split('-dracut-', 1) + modules_from_pkg_names.append(module_name) + extra_modules = extra_modules + ' ' +' '.join(modules_from_pkg_names) + + if config_path: + cmdline.append(f"--conf {config_path}") + if extra_drivers: + cmdline.append(f"--add-drivers {extra_drivers}") + if extra_modules: + cmdline.append(f"--add {extra_modules}") + return ' '.join(cmdline) + +ROOTFS_INITRAMFS_GENERATOR_CMDLINE += "${@ extend_dracut_cmdline()}" +inherit initramfs