[Bug 891711] Re: Fails to copy directory over symlink (e.g. /var/lock when downgrading from 11.10 to 11.04)

[Launchpad Bug Tracker]

This bug was fixed in the package ubiquity - 2.9.19

---------------
ubiquity (2.9.19) precise; urgency=low

  * Install pixmaps/windows_square.png in ubiquity-frontend-gtk.
  * Make it possible to run the test suite against installed packages, and
    add a DEP-8 control file for this.
  * Refactor copy_all to be more robust, handle some more cases, and be
    testable and tested.  It can now:
    - copy a directory over an existing non-directory (LP: #891711);
    - copy device nodes and sockets over existing non-directories
      (LP: #495217);
    - handle all cases of copying a non-directory over an existing empty
      directory;
    - copy a symlink over a non-empty directory by attempting to move the
      directory to the symlink target (LP: #188976);
    - if all else fails, copy a non-directory over an existing non-empty
      directory by moving the target aside to a backup location.
  * Ignore all failures to set timestamps (LP: #411307, #654929).
  * Update translations from Launchpad.
  * Update imported translations from gtk+3.0 3.3.14-0ubuntu2 and
    gnome-panel 1:3.3.5-0ubuntu2.
 -- Colin Watson <cjwatson at ubuntu.com>   Wed, 15 Feb 2012 17:52:19 +0000

** Changed in: ubiquity (Ubuntu Precise)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/891711

Title:
  Fails to copy directory over symlink (e.g. /var/lock when downgrading
  from 11.10 to 11.04)

Status in Release Notes for Ubuntu:
  New
Status in “ubiquity” package in Ubuntu:
  Fix Released
Status in “ubiquity” source package in Natty:
  Won't Fix
Status in “ubiquity” source package in Oneiric:
  Confirmed
Status in “ubiquity” source package in Precise:
  Fix Released

Bug description:
  If one has a running Ubuntu 11.10 system and then boots an Ubuntu
  11.04 CD and chooses to install Ubuntu you are presented with an
  option to "Upgrade from 11.10 to 11.04".  Choosing this option results
  in a crash.

  TEST CASE
  1) Install Ubuntu 11.10
  2) Try to reinstall Ubuntu 11.04 (because you are dissatisfied with the new release for some reason)
  3) At the allocate drive space screen choose "Upgrade 11.10 to 11.04" (because you don't want to lose your data)
  4) During the copying files phase observe a crash

  After the crash ubiquity became non-responsive and I went to a tty to
  reboot the system.  The system fails to boot after choosing either the
  regular or recovery boot option from 11.10.

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