[Bug 1276931] Re: d-r-u cancel mangles sources.list when sources.list.distUpgrade exists and you use an internal mirror

[Launchpad Bug Tracker]

This bug was fixed in the package ubuntu-release-upgrader - 1:0.220.2

---------------
ubuntu-release-upgrader (1:0.220.2) trusty; urgency=medium

  * DistUpgrade/DistUpgradeController.py:
    - really backup sources.list first (LP: #1276931)
 -- Brian Murray <brian at ubuntu.com>   Fri, 11 Apr 2014 15:25:07 -0700

** Changed in: ubuntu-release-upgrader (Ubuntu Trusty)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1276931

Title:
  d-r-u cancel mangles sources.list when sources.list.distUpgrade exists
  and you use an internal mirror

Status in “ubuntu-release-upgrader” package in Ubuntu:
  Fix Released
Status in “ubuntu-release-upgrader” source package in Trusty:
  Fix Released

Bug description:
  ubuntu-release-upgrader (1:0.205.4), on a fully updated saucy system.
  When running `do-release-upgrade -d`, it found my non-standard
  sources.list (I run a local caching proxy mirror):

  ---
  Updating repository information

  No valid mirror found

  While scanning your repository information no mirror entry for the
  upgrade was found. This can happen if you run an internal mirror or
  if the mirror information is out of date.

  Do you want to rewrite your 'sources.list' file anyway? If you choose
  'Yes' here it will update all 'saucy' to 'trusty' entries.
  If you select 'No' the upgrade will cancel.

  Continue [yN] N

  Restoring original system state

  Aborting
  ---

  Upon exiting, /etc/apt/sources.list was all raring entries.  Turns
  out, this was the contents of /etc/apt/sources.list.distUpgrade, which
  existed before I ran d-r-u (no idea why, presumably something to do
  with quantal->raring or raring->saucy).

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