[Bug 1824862] Re: Enable upgrading from 12.04 to 14.04 while keeping ESM enabled

[Steve Langasek]

Hello Joshua, or anyone else affected,

Accepted ubuntu-release-upgrader into trusty-proposed. The package will
build now and be available at https://launchpad.net/ubuntu/+source
/ubuntu-release-upgrader/1:0.220.11 in a few hours, and then in the
-proposed repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-trusty to verification-done-trusty. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-trusty. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

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

** Tags added: verification-needed verification-needed-trusty

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https://bugs.launchpad.net/bugs/1824862

Title:
  Enable upgrading from 12.04 to 14.04 while keeping ESM enabled

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

Bug description:
  [Impact]
  While it is possible to upgrade from 12.04 w/ ESM enabled to 14.04 the ESM archive is disabled thereby making customers vulnerable (since 14.04 is no long receiving security updates) until they reenable the ESM archive.

  [Test Case]
  1. run 'sudo ubuntu-advantage enable-esm $USER:$PASSWORD'
  2. edit /etc/update-manager/release-upgrades set Prompt=lts
  3. run 'do-release-upgrade'
  4. observe "third party entries in your sources.list were disabled" message
  also check /var/log/dist-upgrade/main.log for the following line:
  2019-05-02 10:22:28,345 DEBUG examining: 'deb https://hidden-u:hidden-p@esm.ubuntu.com/ubuntu precise main'
  2019-05-02 10:22:28,346 DEBUG entry '# deb https://hidden-u:hidden-p@esm.ubuntu.com/ubuntu trusty main # disabled on upgrade to trusty' was disabled (unknown mirror)

  with the version of the release upgrader in -proposed you won't receive the disabled message and will see the following in main.log:
  2019-05-02 11:56:58,856 DEBUG examining: 'deb https://hidden-u:hidden-p@esm.ubuntu.com/ubuntu precise-security main'
  2019-05-02 11:56:58,856 DEBUG entry 'deb https://hidden-u:hidden-p@esm.ubuntu.com/ubuntu trusty-security main' updated to new dist
  (Yes, that really says precise-security it's part of the hack to switch pockets.)

  [Regression Potential]
  Because the sources.list entries are manipulated to switch pockets from the precise release one to trusty -security and -updates is possible this change would persist if someone were to cancel the upgrade. So we should test that cancelling the upgrade doesn't modify (by switching pockets) your /etc/apt/sources.list.d/esm* file.

  We now have an LTS to LTS where both have ESM. Therefore we should be
  testing a system with ESM installed on Precise and then upgrade to
  Trusty ESM.

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