[Bug 147080] Re: do-release-upgrade should make disabling third party repositories optional

[Geir Helland]

Has this fix been back-ported to Hardy? I'm looking at a massive upgrade
Hardy->Lucid now, and need to use a local mirror.

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https://bugs.launchpad.net/bugs/147080

Title:
  do-release-upgrade should make disabling third party repositories
  optional

Status in “adept” package in Ubuntu:
  Invalid
Status in “apt” package in Ubuntu:
  Invalid
Status in “aptitude” package in Ubuntu:
  Invalid
Status in “update-manager-core” package in Ubuntu:
  Fix Released
Status in “adept” source package in Jaunty:
  Invalid
Status in “apt” source package in Jaunty:
  Invalid
Status in “aptitude” source package in Jaunty:
  Invalid
Status in “update-manager-core” source package in Jaunty:
  Fix Released

Bug description:
  Binary package hint: update-manager-core

  Currently, do-release-upgrade will automatically disable third party
  repositories that it finds in /etc/apt/sources.list.

  A better option would be to add a config option to /etc/update-manager
  /release-upgrades (like DisableThirdPartyRepos) to determine whether
  or not to disable third party repositories.

  Use case: I use apt-mirror to maintain a local mirror of Ubuntu
  repositories, in order to minimize my own bandwidth usage and to
  relieve strain on Ubuntu servers. Current behavior does not allow me
  to use the local network mirror, but instead sends me to
  archive.ubuntu.com.

  Use case 2: We maintain a local apt repo with site-specific packages
  that we don't want to get disabled when there's a release upgrade.

  Reasons: 
  1.  As Ubuntu grows, demands on its servers will grow; local admins should have the option to point to other mirrors if they are confident of the currency of the mirror. 
  2.  It is much, much faster to upgrade over a local network than to retrieve all the files over the network -- on the order of 10 to 15 times faster using 100 Mb Ethernet and 100 times faster on Gb Ethernet. If the admin has a non-trivial number of computers to upgrade, the admin will definitely want to use a local mirror. 
  3.  Enterprise customers will likely want to fine-tune their upgrade paths to meet organizational requirements. The customer should have that option.

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