[Bug 986272] Re: Update manager doesn't calculate free space correctly for distribution upgrade

[Brian Murray]

** Package changed: update-manager (Ubuntu) => ubuntu-release-upgrader
(Ubuntu)

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

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https://bugs.launchpad.net/bugs/986272

Title:
  Update manager doesn't calculate free space correctly for distribution
  upgrade

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

Bug description:
  I ran an upgrade from 11.10 to 12.04 with 1.9GB free space. No warning
  was given about insufficient free space. I received two popup windows
  during the upgrade informing me that I was low on space and this went
  down to less than 100MB (as I manually freed up space).

  The problem may be:
  1. ~1800 packages are downloaded (this could be the amount of free space it thinks it needs
  2. After upgrading and removing old packages it uses a net amount of ~500MB (this could be the free space it thinks)
  3. During unpacking and installing 1800 packages it uses 2GB+ <== this is definitely not the amount of space it thinks it needs.

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