[Bug 1840347] [NEW] Ceph 12.2.12 restarts services during upgrade

[Kellen Renshaw]

Public bug reported:

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

** Affects: ceph (Ubuntu)
     Importance: Undecided
         Status: New

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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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