[Bug 2076912] Re: broken initrd.img after upgrade to 24.04

[Rhonda D'Vine]

It's this bug I stumbled into:

https://bugzilla.kernel.org/show_bug.cgi?id=214311#c9

Adding "intel_iommu=on iommu=pt" to the kernel parameters in grub made
the system find the disks again.

I'm unsure if/where/how this could be tackled so that others don't
stumble into the issue and have it fixed for good. At least this is a
confirmation that this didn't appear with the toolchain in 22.04 but
only after the upgrade to 24.04, and it doesn't even seem to be kernel
related because the kernel from 22.04 did boot fine with 24.04 if the
*old* initrd.img was used, but not the one regenerated in 24.04.

** Bug watch added: Linux Kernel Bug Tracker #214311
   https://bugzilla.kernel.org/show_bug.cgi?id=214311

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https://bugs.launchpad.net/bugs/2076912

Title:
  broken initrd.img after upgrade to 24.04

Status in initramfs-tools package in Ubuntu:
  New

Bug description:
  I had to upgrade a system from 22.04 to 24.04. So far, so good. Only
  after the reboot I realized I was unable to start the system.
  Debugging it was very cumbersome because it was over a slow link
  including character duplication issues when typing.

  Anyways, I tried to dig into it after a reinstall, and found that the
  initrd.img got regenerated (which also led to being unable to boot
  into the old kernel, not just the new one of 24.04). So another
  reinstall later I made sure to copy away the working initrd.img from
  22.04, and compare it to the one (re)generated by 24.04. It contained
  about 500 less lines in the output of lsinitramfs.

  The system contains hardware raid. grub is able to see the disks, only
  the (broken) initrd.img isn't able to see the disks anymore. blkid
  gives no output at all in the shell I'm dropped into.

  The server is needed for production purposes, so I had reinstalled
  once again to 22.04 to continue working. I have copied off both of the
  initrd.img files for the 5.15.0-118-generic kernel, both the one that
  was generated for 22.04, and the one that was re-generated in the
  upgrade process to 24.04.

  If you need more information, please let me know.

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