[Bug 1993318] Re: ZFS + Encryption installations of Ubuntu Desktop suffer various severe problems related to the package manager

[Dimitri John Ledkov]

subsequent boots are fine.

i wonder if we have a race somewhere, for example. On first boot zfs
cache is out of date. And zfs mount generator doesn't generate mounts
for all the mounted file systems.

then the first daemon-reload ever, will happen after zfs cache is
populated and the zfs volumes are emitted for the first time.

maybe something like mounting all subvolumes should happen from initrd.
as part of pivot root.

or at least building zfs cache, such that first boot's generators run is
correct.

** Changed in: zfs-linux (Ubuntu)
       Status: Incomplete => New

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Title:
  ZFS + Encryption installations of Ubuntu Desktop suffer various severe
  problems related to the package manager

Status in snapd package in Ubuntu:
  Incomplete
Status in systemd package in Ubuntu:
  New
Status in ubiquity package in Ubuntu:
  Fix Released
Status in zfs-linux package in Ubuntu:
  New
Status in zsys package in Ubuntu:
  Invalid

Bug description:
  This is *probably* the wrong package, but it's the best I can figure
  for this, so here goes.

  Hardware: Kubuntu Focus XE, 32 GB RAM, 1 TB SSD, 11th Gen Intel Core
  i5, UEFI, no secure boot. Testing done in GNOME Boxes, BIOS, 4 GB RAM,
  50 GB disk space . OS is Ubuntu Desktop, Kinetic Final ISO.

  Steps to reproduce:

  1. Boot the Ubuntu desktop ISO.
  2. Select "Install Ubuntu" and proceed with the installation process.
  3. When you get to the "Installation type" screen, select "Advanced Options", and enable ZFS + Encryption.
  4. Proceed with the rest of the installation as normal.
  5. Reboot into the newly installed system.
  6. Log in.
  7. Run "sudo apt update" in a terminal.

  Expected result: The package database should be updated normally.

  Actual result: You are presented with the following errors at the end
  of the apt output:

  Reading package lists... Error!
  E: flAbsPath on /var/lib/dpkg/status failed - realpath (2: No such file or directory)
  E: Could not open file  - open (2: No such file or directory)
  E: Problem opening 
  E: The package lists or status file could not be parsed or opened.

  
  Notes: Switching to a TTY will print a crash error message related to the same missing /var/lib/dpkg/status file. Running "sudo touch /var/lib/dpkg/status" will allow "sudo apt update" to function and fix the crashed process in the TTY.

  Once you log in, you'll notice that Firefox is missing (bug #1993279),
  and you will likely be presented with a ton of error messages and
  other scary junk. At least one of those error messages was related to
  update-manager in my experience, and another one was from "check-new-
  release-gtk".

  ProblemType: Bug
  DistroRelease: Ubuntu 22.10
  Package: zsys (not installed)
  ProcVersionSignature: Ubuntu 5.19.0-21.21-generic 5.19.7
  Uname: Linux 5.19.0-21-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.23.1-0ubuntu3
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Oct 18 09:55:27 2022
  InstallationDate: Installed on 2022-10-18 (0 days ago)
  InstallationMedia: Ubuntu 22.10 "Kinetic Kudu" - Release amd64 (20221018)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no username)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: zsys
  UpgradeStatus: No upgrade log present (probably fresh install)

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