[Bug 2008280] Re: regression: update-manager 1:23.04.1 no longer installs any updates (lunar)

[Lucas Albuquerque Medeiros de Moura]

To test on the ubuntu-advantage-tools package we have created a script
that calls the update API multiple times and checks if the results are
consistent. Since the problem that affected update-manager was that the
endpoint was interfering with the APT cache.

This is the script we have used to test it:

------------------------------------------

#!/bin/bash
set -e

series=$1

name=$series-test

function cleanup {
  lxc delete $name --force
}

function on_err {
  echo -e "Test Failed"
  cleanup
  exit 1
}

trap on_err ERR


function upgrade_to_latest {
    echo -e "\n-------------------------------------------"
    echo "** upgrading to 27.13.6"
    echo "-------------------------------------------"
    lxc exec $name -- apt-get update > /dev/null
    lxc exec $name -- apt-get install ubuntu-advantage-tools -y
    lxc exec $name -- apt-cache policy ubuntu-advantage-tools
    echo "-------------------------------------------"
}

function upgrade_to_proposed {
    echo -e "\n-------------------------------------------"
    echo "** upgrading to 27.14.3 from proposed"
    echo "-------------------------------------------"
    lxc exec $name -- sh -c "echo \"deb http://archive.ubuntu.com/ubuntu $series-proposed main\" | tee /etc/apt/sources.list.d/proposed.list"
    lxc exec $name -- apt-get update > /dev/null
    lxc exec $name -- apt-get install ubuntu-advantage-tools -y
    lxc exec $name -- apt-cache policy ubuntu-advantage-tools
    echo "-------------------------------------------"
}

function setup_python_script {
    echo -e "\n-------------------------------------------"
    echo "** Setting up python3 environment"
    echo "-------------------------------------------"

    cat > python-apt-test.py << EOF
from uaclient.api.u.pro.packages.updates.v1 import updates
from uaclient.system import subp

result = updates()
print(result.summary)
result = updates()
print(result.summary)
result = updates()
print(result.summary)
EOF
    lxc file push python-apt-test.py $name/tmp/
    echo "-------------------------------------------"
}

lxc launch ubuntu-daily:$series $name
sleep 5
upgrade_to_latest
sleep 20
setup_python_script

echo -e "\n-------------------------------------------"
echo "** Verify apt cache is not consistent"
lxc exec $name -- apt-get update
lxc exec $name -- python3 /tmp/python-apt-test.py
echo "-------------------------------------------"

upgrade_to_proposed

echo -e "\n-------------------------------------------"
echo "** Verify apt cache is now consistent"
lxc exec $name -- python3 /tmp/python-apt-test.py
echo "-------------------------------------------"

cleanup

-------------------------------------------------

** Attachment added: "test-2008280.tar.xz"
   https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/2008280/+attachment/5663042/+files/test-2008280.tar.xz

** Tags removed: verification-needed verification-needed-bionic verification-needed-focal verification-needed-jammy verification-needed-kinetic verification-needed-xenial
** Tags added: verification-done verification-done-bionic verification-done-focal verification-done-jammy verification-done-kinetic verification-done-xenial

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https://bugs.launchpad.net/bugs/2008280

Title:
  regression: update-manager 1:23.04.1 no longer installs any updates
  (lunar)

Status in ubuntu-advantage-tools package in Ubuntu:
  Fix Released
Status in update-manager package in Ubuntu:
  Invalid
Status in ubuntu-advantage-tools source package in Xenial:
  Fix Committed
Status in ubuntu-advantage-tools source package in Bionic:
  Fix Committed
Status in ubuntu-advantage-tools source package in Focal:
  Fix Committed
Status in ubuntu-advantage-tools source package in Jammy:
  Fix Committed
Status in ubuntu-advantage-tools source package in Kinetic:
  Fix Committed

Bug description:
  Hello,

  On a fairly standard installation of lunar (ie no ubuntu pro linked
  etc), the update-manager no longer appears able to install the updates
  which are listed in the ui when clicking install.

  symptoms:
  - launch update-manager 1:23.04.1
  - note that updates are available
  - note that the ui shows 'unknown download size' in the bottom-left (this should be specified)
  - note that the terminal output shows "required_download could not be calculated: E:Can't find a source to download version 'PKGVERSION' of 'PKGNAME:amd64'"
  - click 'install now' button to install the listed updates
  - note that update-manager doesn't actually install the updates (starting the update fails), the ui jumps to the generic 'installing snap updates' and then shows 'your system is up to date'
  - note that if you launch update-manager again all the (same) updates are showing again

  severity:
  - this is a little concerning as the user can no longer install any updates using the update-manager ui - this includes updates for other packages and of course any updated package including a fix for this issue. (sudo apt update/upgrade in the terminal do of course still work)
  - whilst this issue has been around for at least 5 days there don't appear to be any other reports of this issue. It doesn't seem likely to be something specific to my system though.

  investigation:
  - installing the debs of update-manager 1:22.10.6 (the previous version) resolves this issue
  - it would appear that revision 2959 ( https://bazaar.launchpad.net/~ubuntu-core-dev/update-manager/main/revision/2959 ) is the first revision to introduce this issue
  - this seems related to Ubuntu Pro / Advantage

  Thanks for your attention

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