[Bug 1678583] Re: server upgrade 14.04 to 16.04 exited with error

[purvez desai]

Please read this to understand what the REAL underlying problem was and
how to solve it manually.

https://answers.launchpad.net/ubuntu/+question/614629

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https://bugs.launchpad.net/bugs/1678583

Title:
  server upgrade 14.04 to 16.04 exited with error

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

Bug description:
  Following is a section of the screen from where the Errors section
  appears:

  ====================================

  Running hooks in /etc/ca-certificates/update.d...
  done.
  Errors were encountered while processing:
   mysql-server-5.7
   mysql-server
  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 

  Setting up mysql-server-5.7 (5.7.17-0ubuntu0.16.04.1) ...
  Renaming removed key_buffer and myisam-recover options (if present)
  start: Job failed to start
  invoke-rc.d: initscript mysql, action "start" failed.
  invoke-rc.d: release upgrade in progress, error is not fatal
  dpkg: error processing package mysql-server-5.7 (--configure):
   subprocess installed post-installation script returned error exit status 1
  dpkg: dependency problems prevent configuration of mysql-server:
   mysql-server depends on mysql-server-5.7; however:
    Package mysql-server-5.7 is not configured yet.

  dpkg: error processing package mysql-server (--configure):
   dependency problems - leaving unconfigured
  Errors were encountered while processing:
   mysql-server-5.7
   mysql-server

  Upgrade complete

  The upgrade has completed but there were errors during the upgrade 
  process. 

  To continue please press [ENTER]

  =============================

  As instructed I've tar the dist-upgrade directory and included it as
  an attachment

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