Re: [OE-core] [PATCH v2] initramfs-framework: support LABEL with root-only udev trigger

["Mathieu Dubois-Briand" <mathieu.dubois-briand@bootlin.com>]

On Thu Aug 27, 2026 at 5:11 PM CEST, Wenwen Fu via lists.openembedded.org wrote:
> Filesystem labels are not available in kernel uevents. Add
> util-linux-findfs to initramfs-module-udev and use findfs to resolve
> root=LABEL= to a device. Read the kernel-provided PARTUUID from sysfs
> and trigger only that partition, falling back to a full trigger if the
> label cannot be resolved safely. Keeping findfs out of the BusyBox
> defconfig avoids increasing BusyBox for unrelated users.
>
> Tested with bitbake -p and by generating the
> core-image-minimal-initramfs dependency graph.
>
> AI-Generated: OpenAI Codex
> Signed-off-by: Wenwen Fu <wenwfu@qti.qualcomm.com>
> ---
> Changes in v2:
> - Keep findfs out of the default BusyBox configuration.
> - Add util-linux-findfs as an initramfs-module-udev runtime dependency.
> ---

Hi,

Thanks for the new version, but it looks like this is now breaking the
sstatetests.SStateHashSameSigs2.test_sstate_allarch_samesigs selftest:

2026-08-28 11:52:19,276 - oe-selftest - INFO - 11: 37/71 648/764 (178.91s) (0 failed) (sstatetests.SStateHashSameSigs2.test_sstate_allarch_samesigs)
2026-08-28 11:52:19,277 - oe-selftest - INFO - testtools.testresult.real._StringException: Traceback (most recent call last):
  File "/srv/pokybuild/yocto-worker/oe-selftest-debian/build/layers/openembedded-core/meta/lib/oeqa/selftest/cases/sstatetests.py", line 474, in test_sstate_allarch_samesigs
    self.sstate_common_samesigs(configA, configB, allarch=True)
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/pokybuild/yocto-worker/oe-selftest-debian/build/layers/openembedded-core/meta/lib/oeqa/selftest/cases/sstatetests.py", line 207, in sstate_common_samesigs
    self.assertEqual(files1, files2)
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/srv/pokybuild/yocto-worker/oe-selftest-debian/build/buildtools/sysroots/x86_64-pokysdk-linux/usr/lib/python3.13/unittest/case.py", line 907, in assertEqual
    assertion_func(first, second, msg=msg)
    ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/pokybuild/yocto-worker/oe-selftest-debian/build/buildtools/sysroots/x86_64-pokysdk-linux/usr/lib/python3.13/unittest/case.py", line 1206, in assertDictEqual
    self.fail(self._formatMessage(msg, standardMsg))
    ~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/srv/pokybuild/yocto-worker/oe-selftest-debian/build/buildtools/sysroots/x86_64-pokysdk-linux/usr/lib/python3.13/unittest/case.py", line 732, in fail
    raise self.failureException(msg)
AssertionError: {'nat[225943 chars]k/do_create_package_spdx': '89409e9454bed0d549[78392 chars]4bc'} != {'nat[225943 chars]k/do_recipe_qa': '164b683aa2faabba13f23d8003ac[78392 chars]4bc'}
...
-  'initramfs-framework/do_create_package_spdx': '89409e9454bed0d5494c8686b6418dc7fdd8c7c0d0e97dd87dd3e8342b621da4',
+  'initramfs-framework/do_create_package_spdx': 'c7ab0c1500e7106e8265cef8bd1fe05be652789acf69432215a7e172408676b7',
...
-  'initramfs-framework/do_package_qa': 'b6819a7ecf80c6bf03ff749c968ce24754dd7a07d05fd0fc2fcc9a53efd87bfb',
-  'initramfs-framework/do_package_write_rpm': '5a3cc5880fa17990df7847741014ff9188f80d91e48d789665ff82b1016028f1',
+  'initramfs-framework/do_package_qa': '9b79d0a3fb13d27058711597b04fe0d62f4cd54f250db04408ceb02e35d09a12',
+  'initramfs-framework/do_package_write_rpm': '937c8f39225bc46d8d8abaa38ba17af2b428b690ecb5f4a7706a711824a52af2',
...

https://autobuilder.yoctoproject.org/valkyrie/#/builders/35/builds/4693
https://autobuilder.yoctoproject.org/valkyrie/#/builders/23/builds/4737
https://autobuilder.yoctoproject.org/valkyrie/#/builders/48/builds/4514

Can you have a look at the issue?

Thanks,
Mathieu

-- 
Mathieu Dubois-Briand, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com