[Bug 1616368] Re: Unable to upgrade ubuntu server from 14.04.4 to 16.04.1

[Guillaume]

And another fix i found on 2 others containers was to remove an old
init.d script from bind9, which only contained an exit 0 command
(without the proper headers).

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https://bugs.launchpad.net/bugs/1616368

Title:
  Unable to upgrade ubuntu server from 14.04.4 to 16.04.1

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I'm trying to upgrade an ubuntu 14.04.4 server in a lxc container,
  running mainly request-tracker, apache2, bind and mysql.

  (Reading database ... 33111 files and directories currently installed.)
  Preparing to unpack .../plymouth_0.9.2-3ubuntu13.1_amd64.deb ...
  Unpacking plymouth (0.9.2-3ubuntu13.1) over (0.8.8-0ubuntu17.1) ...
  Replacing files in old package libplymouth2:amd64 (0.8.8-0ubuntu17.1) ...
  Selecting previously unselected package libplymouth4:amd64.
  Preparing to unpack .../libplymouth4_0.9.2-3ubuntu13.1_amd64.deb ...
  Unpacking libplymouth4:amd64 (0.9.2-3ubuntu13.1) ...
  Preparing to unpack .../mountall_2.54ubuntu1_amd64.deb ...
  Unpacking mountall (2.54ubuntu1) over (2.53) ...
  Preparing to unpack .../insserv_1.14.0-5ubuntu3_amd64.deb ...
  Unpacking insserv (1.14.0-5ubuntu3) over (1.14.0-5ubuntu2) ...
  Setting up insserv (1.14.0-5ubuntu3) ...
  (Reading database ... 33170 files and directories currently installed.)
  Preparing to unpack .../sysv-rc_2.88dsf-59.3ubuntu2_all.deb ...
  Unpacking sysv-rc (2.88dsf-59.3ubuntu2) over (2.88dsf-41ubuntu6.3) ...
  Setting up sysvinit-utils (2.88dsf-59.3ubuntu2) ...
  Removing obsolete conffile /etc/init/startpar-bridge.conf ...
  Setting up sysv-rc (2.88dsf-59.3ubuntu2) ...
  info: Reordering boot system, log to /var/lib/insserv/run-20160824T1014.log
  error: Something failed while migrating.

  error: Unable to migrate to dependency based boot sequencing.

  See http://wiki.debian.org/LSBInitScripts/DependencyBasedBoot for
  more information about dependency based boot sequencing. To
  reattempt the migration process run 'dpkg --configure sysv-rc'.

  dpkg: error processing package sysv-rc (--configure):
   subprocess installed post-installation script returned error exit status 1
  Errors were encountered while processing:
   sysv-rc
  Error in function:

  A fatal error occurred

  Please report this as a bug and include the files
  /var/log/dist-upgrade/main.log and /var/log/dist-upgrade/apt.log in
  your report. The upgrade has aborted.
  Your original sources.list was saved in
  /etc/apt/sources.list.distUpgrade.

  SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)

  Could not install the upgrades

  The upgrade has aborted. Your system could be in an unusable state. A
  recovery will run now (dpkg --configure -a).

  Please report this bug in a browser at
  http://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+filebug
  and attach the files in /var/log/dist-upgrade/ to the bug report.
  installArchives() failed

  
  * /var/lib/insserv/run-20160824T1014.log
  [CODE]info: Converting rc0.d/S* and rc6.d/S* to K*.
  info: running insserv
  insserv: warning: script 'bind9' missing LSB tags and overrides
  insserv: warning: script 'wide-dhcpv6-client' missing LSB tags and overrides
  insserv: There is a loop between service bind9 and apache2 if stopped
  insserv:  loop involving service apache2 at depth 2
  insserv:  loop involving service bind9 at depth 1
  insserv:  loop involving service sendsigs at depth 4
  insserv: exiting now without changing boot order!

  
  So, i removed bind9 and apache2 from init.d and tried to fix it :
  ~# dpkg --configure sysv-rc
  dpkg: error processing package sysv-rc (--configure):
   package sysv-rc is already installed and configured
  Processing triggers for libc-bin (2.23-0ubuntu3) ...
  Processing triggers for ca-certificates (20160104ubuntu0.14.04.1) ...
  Updating certificates in /etc/ssl/certs... 0 added, 0 removed; done.
  Running hooks in /etc/ca-certificates/update.d....done.
  Errors were encountered while processing:
   sysv-rc

  And now i'm missing some important binairies (like halt, shutdown and runlevel) :
  /usr/sbin/invoke-rc.d: 1: /usr/sbin/invoke-rc.d: /sbin/runlevel: not found

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