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[Matt Riedemann <mriedem.os@xxxxxxxxx>]

*** This bug is a duplicate of bug 1764489 ***
    https://bugs.launchpad.net/bugs/1764489

** This bug has been marked a duplicate of bug 1764489
   Preallocated disks are deducted twice from disk_available_least when using preallocated_images = space

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https://bugs.launchpad.net/bugs/1593155

Title:
  over_committed_disk_size is wrong for sparse flat files

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  The libvirt driver creates flat disks as sparse by default. However,
  it always returns over_committed_disk_size=0 for flat disks in
  _get_instance_disk_info(). This incorrect data ends up being reported
  to the scheduler in the libvirt driver's get_available_resource() via
  _get_disk_over_committed_size_total().

  _get_instance_disk_info() should use allocated blocks, not file size,
  when calculating over_commited_disk_size for flat disks.

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