[Bug 1637300] Re: procps upgrades fail in a LXD container

[Lars Bo Rasmussen]

root at vps137255:~# apt-get install procps/xenial-proposed
Reading package lists... Done
Building dependency tree
Reading state information... Done
Selected version '2:3.3.10-4ubuntu2.2' (Ubuntu:16.04/xenial-proposed [amd64]) for 'procps'
The following packages were automatically installed and are no longer required:
  initramfs-tools-core libapt-inst1.5 linux-base
Use 'apt autoremove' to remove them.
The following packages will be upgraded:
  procps
1 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
4 not fully installed or removed.
Need to get 222 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://archive.ubuntu.com/ubuntu xenial-proposed/main amd64 procps amd64 2:3.3.10-4ubuntu2.2 [222 kB]
Fetched 222 kB in 0s (2,235 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
(Reading database ... 21894 files and directories currently installed.)
Preparing to unpack .../procps_2%3a3.3.10-4ubuntu2.2_amd64.deb ...
Unpacking procps (2:3.3.10-4ubuntu2.2) over (2:3.3.10-4ubuntu2) ...
Processing triggers for systemd (229-4ubuntu12) ...
Processing triggers for man-db (2.7.5-1) ...
Setting up procps (2:3.3.10-4ubuntu2.2) ...
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
Setting up udev (229-4ubuntu12) ...
Installing new version of config file /etc/init.d/udev ...
Installing new version of config file /etc/init/udevmonitor.conf ...
addgroup: The group `input' already exists as a system group. Exiting.
Removing obsolete conffile /etc/init.d/udev-finish ...
Removing obsolete conffile /etc/init/udev-finish.conf ...
Removing obsolete conffile /etc/init/udev-fallback-graphics.conf ...
Removing obsolete conffile /etc/init.d/lvm2 ...
Setting up initramfs-tools-core (0.122ubuntu8.5) ...
Installing new version of config file /etc/initramfs-tools/initramfs.conf ...
Setting up openssh-server (1:7.2p2-4ubuntu2.1) ...
Installing new version of config file /etc/network/if-up.d/openssh-server ...
Processing triggers for systemd (229-4ubuntu12) ...

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https://bugs.launchpad.net/bugs/1637300

Title:
  procps upgrades fail in a LXD container

Status in procps package in Ubuntu:
  Fix Released
Status in procps source package in Xenial:
  Fix Committed
Status in procps package in Debian:
  Fix Released

Bug description:
  [Impact]
  procps cannot be upgraded - or even reinstalled - in an LXD container. This means we cannot deliver updates (like the pending fix for LP: #1637026 in xenial-proposed) w/o putting container users in a bad state that requires a container restart to resolve.

  [Test Case]
  $ lxc launch ubuntu:xenial procpstest
  Creating procpstest
  Starting procpstest
  $ lxc exec procpstest -- /bin/bash
  root at procpstest:~# apt --reinstall install procps
  Reading package lists... Done
  Building dependency tree       
  Reading state information... Done
  0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded.
  Need to get 209 kB of archives.
  After this operation, 0 B of additional disk space will be used.
  Get:1 http://ports.ubuntu.com/ubuntu-ports xenial/main arm64 procps arm64 2:3.3.10-4ubuntu2 [209 kB]
  Fetched 209 kB in 1s (113 kB/s)  
  (Reading database ... 25398 files and directories currently installed.)
  Preparing to unpack .../procps_2%3a3.3.10-4ubuntu2_arm64.deb ...
  Unpacking procps (2:3.3.10-4ubuntu2) over (2:3.3.10-4ubuntu2) ...
  Processing triggers for man-db (2.7.5-1) ...
  Processing triggers for ureadahead (0.100.0-19) ...
  Processing triggers for systemd (229-4ubuntu11) ...
  Setting up procps (2:3.3.10-4ubuntu2) ...
  update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
  Job for systemd-sysctl.service failed because the control process exited with error code. See "systemctl status systemd-sysctl.service" and "journalctl -xe" for details.
  invoke-rc.d: initscript procps, action "start" failed.
  dpkg: error processing package procps (--configure):
   subprocess installed post-installation script returned error exit status 1
  Errors were encountered while processing:
   procps
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  root at procpstest:~#

  [Regression Risk]
  The proposed fix is to disable invoking the procps initscript on install/upgrade. This fix is already in yakkety, and I didn't find any bugs related to it in LP.

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