[Bug 1880170] Re: SRU: Revert of initramfs package removal in KVM image

[Philip Roche]

Verification of livecd-rootfs 2.620.3 in eoan -proposed completed.

The following verification was completed.

 * Perform livefs build with project ubuntu-base
 * Boot *-disk-kvm.img using kvm
   * Confirm it boots
   * Confirm there is no boot speed regression
   * Confirm that running `sudo apt-get autoremove` results in no packages being removed
   * Verify that `GRUB_FORCE_PARTUUID` is set in /etc/default/grub.d/40-force-partuuid.cfg.

See test images @ 
https://people.canonical.com/~philroche/lp-1880170-Revert-of-initramfs-package-removal-in-KVM-image/eoan/


** Tags removed: verification-needed verification-needed-eoan verification-needed-focal
** Tags added: verification-done verification-done-eoan verification-done-focal

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Title:
  SRU: Revert of initramfs package removal in KVM image

Status in livecd-rootfs package in Ubuntu:
  Fix Released
Status in livecd-rootfs source package in Eoan:
  Fix Committed
Status in livecd-rootfs source package in Focal:
  Fix Committed

Bug description:
  No packages marked for auto-removal should be present in a published
  cloud image.

  The current kvm binary hook in livecd-rootfs removes the packages
  `initramfs-tools` and `busybox-initramfs`. This results in many
  packages [1] being marked for auto-removal. These packages are still
  required in the image and should not be marked for auto-removal.

  The removal of initramfs-tools and busybox-initramfs was to avoid the
  generation of initramfs in images that should boot initramfsless.

  This requirement is obsolete now because the initramfsless boot handling
  is now handled via setting GRUB_FORCE_PARTUUID in /etc/default/grub.d/40-force-partuuid.cfg.

  [Impact]

   * No packages marked for auto-removal. This is a requirement for all
  public cloud images.

  [Test Case]

   * Perform livefs build with project ubuntu-base
   * Boot *-disk-kvm.img using kvm
     * Confirm it boots
     * Confirm there is no boot speed regression
     * Confirm that running `sudo apt-get autoremove` results in no packages being removed
     * Verify that `GRUB_FORCE_PARTUUID` is set in /etc/default/grub.d/40-force-partuuid.cfg.

  [Regression Potential]

   * Boot speed regression
   * Unable to boot KVM image

  [Other Info]

   * Original bug filed against cloud-images @ https://bugs.launchpad.net/cloud-images/+bug/1875400
   * MP already merged in to ubuntu/master @ https://code.launchpad.net/~philroche/livecd-rootfs/+git/livecd-rootfs/+merge/384105
   * livecd-rootfs version 2.667 in groovy was uploaded with this patch and was verified

  
  [1] apport apport-symptoms at bc bcache-tools bolt btrfs-progs byobu cryptsetup cryptsetup-bin cryptsetup-run dmeventd ethtool finalrd
    fonts-ubuntu-console fwupd fwupd-signed git git-man htop initramfs-tools-bin klibc-utils kpartx landscape-common libaio1 libarchive13
    libcurl3-gnutls libdevmapper-event1.02.1 liberror-perl libevent-2.1-7 libfl2 libfwupd2 libfwupdplugin1 libgcab-1.0-0 libgpgme11
    libgudev-1.0-0 libgusb2 libisns0 libjson-glib-1.0-0 libjson-glib-1.0-common libklibc liblvm2cmd2.03 libmspack0 libreadline5
    libsgutils2-2 libsmbios-c2 libtss2-esys0 liburcu6 libutempter0 libxmlb1 libxmlsec1 libxmlsec1-openssl libxslt1.1 lvm2 lxd-agent-loader
    lz4 mdadm open-iscsi open-vm-tools patch pollinate python3-apport python3-automat python3-click python3-colorama python3-constantly
    python3-debconf python3-debian python3-hamcrest python3-hyperlink python3-incremental python3-newt python3-problem-report python3-pyasn1
    python3-pyasn1-modules python3-service-identity python3-systemd python3-twisted python3-twisted-bin python3-zope.interface run-one
    screen sg3-utils sosreport thin-provisioning-tools tmux tpm-udev update-notifier-common xfsprogs zerofree

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