[Bug 2125827] Re: Jammy grub2 failed to detect 2nd virtio disk

[Lukas Märdian]

** Also affects: grub2 (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2125827

Title:
  Jammy grub2 failed to detect 2nd virtio disk

Status in grub2 package in Ubuntu:
  New
Status in qemu package in Ubuntu:
  New

Bug description:
  I am using qemu-system-x86_64 on Jammy to create a VM with two disks, both on the virtio bus.
  When I enter the GRUB shell and use the "ls" command, only the first virtio disk is listed.
  However, if I change the second disk to the SATA bus, GRUB can recognize the second disk.

  Steps and result

  Jammy: https://paste.ubuntu.com/p/TXjzbcXG5z/

  This issue cannot be reproduced on Focal.

  Focal: https://paste.ubuntu.com/p/MF2NKfsTSt/

  The impact of this is that chainloading will fail.

  /etc/grub.d/25_custom

  menuentry "Attached-IDE-Disk" {
  set root=(hd1)
  insmod linux
  insmod chain
  chainloader +1
  }

  I'm not sure whether this is an issue with QEMU or GRUB. Thus, I filed
  a bug on grub2 as well.
  https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2125826

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