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[Launchpad Bug Tracker <1902260@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package livecd-rootfs - 2.664.17

---------------
livecd-rootfs (2.664.17) focal; urgency=medium

  [ David Krauser ]
  * buildd: produce kernel and initrd as separate artifacts LP: #1910557
  * buildd: call update-initramfs for all installed kernels
    We only have one kernel installed, so we don't need to
    specify an explicit version. LP: #1910557

  [ Dimitri John Ledkov ]
  * esp: install grub in ubuntu bootloader id path, instead of removable.
    (LP: #1912830)
  * esp: perform fsck. (LP: #1912835)
  * Perform fsck on all rootfs. (LP: #1912835)
  * functions: stop removing systemd-detect-virt unconditionally in undivert_grub
    (LP: #1902260)

livecd-rootfs (2.664.16) focal; urgency=medium

  [ Cody Shepherd ]
  * Produce manifests for buildd tarball images (LP: #1914445)

 -- Dimitri John Ledkov <xnox@xxxxxxxxxx>  Tue, 09 Feb 2021 00:52:00
+0000

** Changed in: livecd-rootfs (Ubuntu Focal)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1902260

Title:
  systemd-detect-virt is missing on Groovy EC2 AMI

Status in cloud-images:
  Confirmed
Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Xenial:
  Fix Released
Status in livecd-rootfs source package in Bionic:
  Fix Released
Status in livecd-rootfs source package in Focal:
  Fix Released
Status in livecd-rootfs source package in Groovy:
  Fix Released

Bug description:
  [Impact]

   * On some image types, systemd-detect-virt might be missing

  [Test Case]

   * $ sudo systemd-detect-virt

  Should print a word.

  If it prints "no such file or directory" it is buggy.

  Best reproduced on initrdless boot, public cloud, where kernel flavour
  is switched, such as GCP groovy or AWS EC2 groovy. However other image
  types might be affected too.

  Backporting the change to all series, in case there are other places
  which invoke undivert_grub multiple times in a row.

  [Where problems could occur]

   * Hopefully, systemd-detect-virt undivert is now correct. Issues
  might happen in case systemd is not meant to be installed and yet the
  file remains on disk; or if the diversion is not removed still.
  Resulting in incorrect runtime behaviour.

   * For the images where this is fixed, systemd-detect-virt will now
  start working correctly. Thus may trigger automation to run that
  relied on missing systemd-detect-virt and thus previously did not
  execute.

  [Other Info]
   
   * Original bug report

  
  ubuntu/images/hvm-ssd/ubuntu-groovy-20.10-arm64-server-20201022.1

  ubuntu@ip-172-31-30-199:~$ dpkg -S systemd-detect-virt
  systemd: /usr/bin/systemd-detect-virt
  systemd: /usr/share/bash-completion/completions/systemd-detect-virt
  systemd: /usr/share/man/man1/systemd-detect-virt.1.gz
  ubuntu@ip-172-31-30-199:~$ ls /usr/bin/systemd-detect-virt
  ls: cannot access '/usr/bin/systemd-detect-virt': No such file or directory

  Since livecd-rootfs plays with diversions of this file it looks
  suspicious, but I have not fully triaged the problem.

  LXD image for amd64 seems to be ok: ubuntu 20.10 amd64 (release)
  (20201022.1)

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