[Bug 1291262] [NEW] do-release-upgrade gives up too easily on 404 error

[Rolf Leggewie]

Public bug reported:

The do-release-upgrade command in precise gives up too easily when some
files fail to download.

$ sudo do-release-upgrade -d
[...]
Error during update 

A problem occurred during the update. This is usually some sort of 
network problem, please check your network connection and retry. 

W:Failed to fetch 
http://ppa.launchpad.net/r0lf/stable/ubuntu/dists/trusty/main/binary-i386/Packages 
404 Not Found 
, W:Failed to fetch http://$some-private-mirror/debs/./Packages 
403 Forbidden 
, E:Some index files failed to download. They have been ignored, or 
old ones used instead. 

The program then aborts when it should simply keep going.  For your
better understanding the 403 error results from the fact that I allow
access to that mirror only from certain trusted IP numbers.  The 404
from the PPA stems from the fact that I haven't yet published any trusty
packages in that PPA.  Neither of the two should be a problem for an
upgrade.

** Affects: update-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: precise2trusty

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https://bugs.launchpad.net/bugs/1291262

Title:
  do-release-upgrade gives up too easily on 404 error

Status in “update-manager” package in Ubuntu:
  New

Bug description:
  The do-release-upgrade command in precise gives up too easily when
  some files fail to download.

  $ sudo do-release-upgrade -d
  [...]
  Error during update 

  A problem occurred during the update. This is usually some sort of 
  network problem, please check your network connection and retry. 

  W:Failed to fetch 
  http://ppa.launchpad.net/r0lf/stable/ubuntu/dists/trusty/main/binary-i386/Packages 
  404 Not Found 
  , W:Failed to fetch http://$some-private-mirror/debs/./Packages 
  403 Forbidden 
  , E:Some index files failed to download. They have been ignored, or 
  old ones used instead. 

  The program then aborts when it should simply keep going.  For your
  better understanding the 403 error results from the fact that I allow
  access to that mirror only from certain trusted IP numbers.  The 404
  from the PPA stems from the fact that I haven't yet published any
  trusty packages in that PPA.  Neither of the two should be a problem
  for an upgrade.

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