[Bug 1067393] Re: using a local mirror and an official mirror of -backports does not work

[Launchpad Bug Tracker]

** Branch linked: lp:ubuntu/raring-proposed/ubuntu-release-upgrader

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https://bugs.launchpad.net/bugs/1067393

Title:
  using a local mirror and an official mirror of -backports does not
  work

Status in “ubuntu-release-upgrader” package in Ubuntu:
  In Progress

Bug description:
  In the event that you use a local mirror but do not mirror -backports
  you will end up in a situation where you are not able to perform a
  distribution upgrade.

  An example sources.list:

  deb http://192.168.1.1/ubuntu feisty main restricted
  deb http://192.168.1.1/ubuntu feisty-updates main restricted
  deb http://security.ubuntu.com/ubuntu/ feisty-security main restricted
  deb http://archive.ubuntu.com/ubuntu feisty-backports main restricted universe multiverse

  What will happen is that the first two lines will be commented out by
  ubuntu-release-upgrader and it will check -backports for ubuntu-
  minimal and will not find it and the upgrade will exit.  You will be
  presented with an error message that says:

  'This may be because you have no official mirrors listed in your
  software sources, or because of excessive load on the mirror you are
  using.'

  However, if things were working properly you should instead see:

  "No valid mirror found … Do you want to rewrite your 'sources.list'
  file anyway?"

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