[Bug 1982055] Re: Ubuntu 21.04 is un-upgradeable

[Rob Thomas]

I accept that Canonical have decided to cripple do-release-upgrade when
it is deemed that a release is too old.

Should this not be documented somewhere, EXPLICITLY with how to recover
from this?

In your example, on January 19th, a machine could be upgraded from 21.04
to 21.10.  On Jan 20th, the machine was (without this patch) un-
recoverable and could never be upgraded to 21.10.  Nothing changed,
apart from Supported: 1 being changed to Supported: 0 in the meta file.


** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: Invalid => Confirmed

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https://bugs.launchpad.net/bugs/1982055

Title:
  Ubuntu 21.04 is un-upgradeable

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

Bug description:
  Related: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-
  upgrader/+bug/1981939

  Any existing U21.04 machines are currently dead in the water, as there
  appears to be no way at all to upgrade them to 21.10 and then to
  22.04.

  For some reason 'do-release-upgrade' is trying to take them directly
  from 21.04 to 22.04 - is there some typo/regexp issue somewhere where
  it's thinking it's trying to move from 20.04 to 22.04?

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