[Bug 1801629] Re: xubuntu-core needs to depend on cryptsetup and lvm2 or 'apt autoremove' will make a LUKS+LVM encrypted root partition non-bootable

[Julian Andres Klode]

I think we should run

apt-get autoremove -s | sed -nr 's#Remv (.*) \[.*#\1#p' | xargs apt-mark
manual

after the install finished otherwise, this way get any packages marked
as manually installed that would otherwise be subject to autoremoval.

The alternative here would be to run the minimize-manual script on the
"install" chroot, and not the "live" chroot. But that requires further
integration with live-build.

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

** Also affects: xubuntu-meta (Ubuntu Disco)
   Importance: Undecided
       Status: Confirmed

** Also affects: ubiquity (Ubuntu Disco)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-mate-meta (Ubuntu Disco)
   Importance: Undecided
       Status: Confirmed

** Also affects: xubuntu-meta (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: ubiquity (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-mate-meta (Ubuntu Cosmic)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-mate-meta (Ubuntu Cosmic)
       Status: New => Incomplete

** Changed in: ubuntu-mate-meta (Ubuntu Cosmic)
       Status: Incomplete => Invalid

** Changed in: ubuntu-mate-meta (Ubuntu Disco)
       Status: Confirmed => Invalid

** Changed in: xubuntu-meta (Ubuntu Cosmic)
       Status: New => Invalid

** Changed in: xubuntu-meta (Ubuntu Disco)
       Status: Confirmed => Invalid

** Changed in: ubiquity (Ubuntu Disco)
       Status: New => Triaged

** Changed in: ubiquity (Ubuntu Cosmic)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/1801629

Title:
  xubuntu-core needs to depend on cryptsetup and lvm2 or 'apt
  autoremove' will make a LUKS+LVM encrypted root partition non-bootable

Status in ubiquity package in Ubuntu:
  Triaged
Status in ubuntu-mate-meta package in Ubuntu:
  Invalid
Status in xubuntu-meta package in Ubuntu:
  Invalid
Status in ubiquity source package in Cosmic:
  Triaged
Status in ubuntu-mate-meta source package in Cosmic:
  Invalid
Status in xubuntu-meta source package in Cosmic:
  Invalid
Status in ubiquity source package in Disco:
  Triaged
Status in ubuntu-mate-meta source package in Disco:
  Invalid
Status in xubuntu-meta source package in Disco:
  Invalid

Bug description:
  In a clean install of Xubuntu 18.10, if an unsuspecting user runs 'apt
  autoremove', it will remove 'cryptsetup' and 'lvm2' making the system
  non-bootable at next restart if an encrypted(LUKS+LVM) root partition
  was selected during the ubiquity installer wizard:

  $ sudo apt update && sudo apt --auto-remove full-upgrade && cat /run/reboo*
  <snip...>
  The following packages will be REMOVED:
    cryptsetup cryptsetup-bin cryptsetup-initramfs cryptsetup-run dmeventd libdevmapper-event1.02.1 liblvm2app2.2 liblvm2cmd2.02 libreadline5 lvm2
  <...snip>

  This _will_ make the system non-bootable upon restart if LUKS+LVM are
  active on the root partition. This would, by extension, make any auto-
  mounted partitions(home, etc.) unavailable after boot as well!

  WORKAROUND:

  $ sudo apt install cryptsetup lvm2
  <snip...>
  cryptsetup is already the newest version (2:2.0.4-2ubuntu2).
  cryptsetup set to manually installed.
  lvm2 is already the newest version (2.02.176-4.1ubuntu3).
  lvm2 set to manually installed.
  <...snip>

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: xubuntu-core 2.227
  ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12
  Uname: Linux 4.18.0-10-generic x86_64
  ApportVersion: 2.20.10-0ubuntu13
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Sun Nov  4 18:20:38 2018
  InstallationDate: Installed on 2018-11-04 (0 days ago)
  InstallationMedia: Xubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
  SourcePackage: xubuntu-meta
  UpgradeStatus: No upgrade log present (probably fresh install)

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