[Bug 2049540] Re: hundreds of differences in module list between initramfs-tools version 0.142ubuntu10 and version 0.142ubuntu11

[Benjamin Drung]

What is the problem here? Is there any proof that these modules are
needed?

These four commit refer to bug #2031841 and cause the difference:

Filter net kernel modules by symbol regexp from dracut
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/commit/?id=55a7cf12c037ccd14a0241aa8cab085f6f8590d8

Filter block kernel modules by symbol regex from dracut
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/commit/?id=7ef0f4f446abe98434dcffffd2410247f95b0983

Install all usb/typec kernel modules
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/commit/?id=aa8821f6ad59d9ce8f8cacddc5f8ae7e41178b71

Do not install ARM/RISCV specific modules on other architectures
https://git.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/commit/?id=2df78bbb143884b9601a32608e12e43d40ccb0b0

Using symbol regexes will be more fine-grained than including whole
directories.

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https://bugs.launchpad.net/bugs/2049540

Title:
  hundreds of differences in module list between initramfs-tools version
  0.142ubuntu10 and version 0.142ubuntu11

Status in initramfs-tools package in Ubuntu:
  Triaged
Status in initramfs-tools source package in Noble:
  Triaged

Bug description:
  When analyzing the kernel modules present in the current initrd, I
  have found that there are hundreds of such differences, and that this
  started with the move to dracut.

  I believe that the move to dracut was intended to be relatively module
  neutral - see LP: #2031841 and LP: #2042710 for more details on that.

  I'm attaching here a test case based on podman, where different
  versions of the initramfs-tools package are installed, and then the
  list of modules present in the initrd is analyzed.

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