[Bug 1840347] Re: Ceph 12.2.12 restarts services during upgrade

[Eric Desrochers]

Another thing you could do as a debug exercise to better understand what
is going on is to modify the maintainer scripts in question by adding
the following:

- set -e
+ set -exv

-v Print shell input lines as they are read.
-x Print commands and their arguments as they are executed.

and then build a test package(instrumented) from it. It might be useful
to see exactly what is happening behind the curtains.

Hope these few tips help !

- Eric

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https://bugs.launchpad.net/bugs/1840347

Title:
  Ceph 12.2.12  restarts services during upgrade

Status in ceph package in Ubuntu:
  New

Bug description:
  Upgrading from 12.2.11-0ubuntu0.18.04.2 to 12.2.12-0ubuntu0.18.04.1 on
  Ubuntu 18.04 causes the ceph-osd services to be restarted without
  prompting.

  This appears to be in the configure section on the ceph-common,postinst:
  # Automatically added by dh_systemd_start/11.1.6ubuntu2
  if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
          if [ -d /run/systemd/system ]; then
                  systemctl --system daemon-reload >/dev/null || true
                  if [ -n "$2" ]; then
                          _dh_action=restart
                  else
                          _dh_action=start
                  fi
                  deb-systemd-invoke $_dh_action 'ceph.target' >/dev/null || true
          fi
  fi
  # End automatically added section

  dpkg.log after the upgrade shows that "configure" was exercised:
  2019-08-15 10:49:18 upgrade ceph-common:amd64 12.2.11-0ubuntu0.18.04.2 12.2.12-
  ...
  2019-08-15 10:49:29 configure ceph-common:amd64 12.2.12-0ubuntu0.18.04.1 <none>
  ..
  2019-08-15 10:49:56 status installed ceph-common:amd64 12.2.12-0ubuntu0.18.04.1

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