[Bug 848659] Re: Upgrade from natty fails with 64-bit oneiric beta cd

[Tim Frost]

Further testing and research:
I used the server CD that successfully upgraded my server from natty to oneiric, and it failed at the same stage.  

On the server, main.log  showed repositories being disabled, then
 'running doUpdate() (showErrors=True)'


On the workstation, at the same stage in the process, it logged "AptCdrom.add() called with '/media/cdrom0'", this time with:
2011-09-24 11:19:27,896 ERROR IOError/SystemError in cache.update(): 'W:Failed to fetch cdrom://Ubuntu-Server 11.10 _Oneiric Ocelot_ - Beta amd64 (20110901)/dists/oneiric/main/binary-i386/Packages  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
(The server ISO from 1 Sept daily build was used to create the CD).
The call to  doUpdate() (showErrors=True) was logged immediately after 'AptCdrom.add() returned: True'

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https://bugs.launchpad.net/bugs/848659

Title:
  Upgrade from natty fails with 64-bit oneiric beta cd

Status in “update-manager” package in Ubuntu:
  Confirmed
Status in “update-manager” source package in Oneiric:
  Confirmed

Bug description:
  System is running 64-bit natty.  When I insert a CD burnt from image
  ubuntu-11.10-beta1-alternate-amd64.iso,  the upgrade process runs
  until it is attempting to process the i386 Packages files.  At that
  step, the upgrade process stops with error 'W:Failed to fetch
  cdrom://Ubuntu 11.10 _Oneiric Ocelot_ - Beta amd64
  (20110901)/dists/oneiric/main/binary-i386/Packages  Please use apt-
  cdrom to make this CD-ROM recognized by APT. apt-get update cannot be
  used to add new CD-ROMs'

  I note that the two i386 Packages.gz files are 20 bytes, corresponding
  to a zero-length uncompressed file.

  Contents of /var/log/dist-upgrade attached as a tar archive

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