[Bug 1056707] Re: "Unsafe swap space detected" dialog displayed too late if swap is created after an encrypted partition and makes manual partitioner unusable

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This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1056707

** Tags added: iso-testing

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Title:
  "Unsafe swap space detected" dialog displayed too late if swap is
  created after an encrypted partition and makes manual partitioner
  unusable

Status in “ubiquity” package in Ubuntu:
  New

Bug description:
  Quantal Desktop 20120926

  In the manual partitioner, if the user creates the swap space after
  the encrypted space then installation starts and the "Unsafe swap
  space detected" dialog is shown during the timezone step. When the
  dialog is dismissed, it brings the user back to the guided partitioner
  not the manual partitioner.

  Then, if I use the manual partitioner again, it is unusable, all the
  actions are greyed, only 'Change' is enabled but does nothing

  In the guided partioner, If I select 'Erase everything' then
  installation stops on error with a dialog titled 'ERROR!!!'
  "'/dev/sdaX' device or resource busy."

  The dialog should be displayed when the user creates the swap space
  and the manual partitioner should allow to fix the mistake.

  TEST CASE:
  1. Start Ubiquity and go to the manual partitioner
  2. Create a new partition table
  3. Add a partition of type "physical volume for encryption" and do not allocate all disk space, enter a passphrase and press 'ok'
  4. Select the newly created partition and mount it on '/'
  5. Select the free space and create a partition of type 'ext4', mounted on '/boot' and keep free space for a swap partition.
  6. Select the free space and create a partition of type 'swap space'
  7. Press 'Install Now'

  ACTUAL RESULT:
  Installation continues, proceeds to the timezone step and the stops with a dialog 'Unsafe swap space detected'
  Installation is completely blocked because the partition is not released and cannot be reused.

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