[Bug 1048285] Re: Add some diagnostics to do-release-upgrade when it can't find a release

[Dennis De Matteis]

Hi there,

I've searched a bit among existing reports and i think/hope this is the right place to add my information.
I recently struggled about important information which is missing when executing do-release-upgrade on Ubuntu 12.04 LTS.
After execution it reported: no new release found
even though Ubuntu 14.04. LTS is available.

As far as i understood, do-release-upgrade checks servers mentioned in /etc/update-manager/meta-release for upgrades.
I figured out that the the effected machines have links to local repositorys which allows e.g. "apt-get update" and "apt-get upgrade" to work. However no local records for the meta-release files are given and the local network configuration blocks requests to:
http://changelogs.ubuntu.com/meta-release and
http://changelogs.ubuntu.com/meta-release-lts
due to a centralized Firewall, leading to the very confusing output of "no new release found" even though it did not even look, since the request was blocked by firewall.

Since i was not fully familiar with the network structure here, it took
me some time to make sense out of this message. I would suggest that the
do-release-upgrade script should check if it can reach the registered
meta-release servers and then provides a useful output like "Unable to
reach Meta-Release server http://changelogs.ubuntu.com/meta-release-
lts".

This enhancement would be very much appreciated :-)

Regards,

Dennis

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https://bugs.launchpad.net/bugs/1048285

Title:
  Add some diagnostics to do-release-upgrade when it can't find a
  release

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

Bug description:
  every LTS+1 those of in +1 see zillions of people asking why do-release-upgrade -d   won't find them their new release;
  it doesn't tell them why there was 'No new release found'.

  So I'd like to see it say something like:
     No new release found; do-release-upgrade is configured to only look for new LTS releases (see ....)

  Dave

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