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[Joe Gordon <1126375@xxxxxxxxxxxxxxxxxx>]

patch was abandoned

** Changed in: nova
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1126375

Title:
  Disable libvirt base file cleanup by default

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  Hello,

  This is related to the following previous bugs:

  bug #1029674
  bug #1078594

  I see that the image_cache_manager_interval was temporarily changed to
  0 to effectively disable images from being removed. It looks like it
  has been restored to a non-zero number.

  Both as a systems administrator responsible for OpenStack environments
  and as someone who was bit by this feature being enabled, I feel that
  remove_unused_base_images should be False as default. Having a
  "delete" setting turned on by default can be very dangerous. No matter
  how many precautions are taken, some scenarios will still slip by. In
  my opinion, it is a better operational problem to have someone report
  an abundance of unused images that they can opt-in to delete rather
  than having a user report images that have been deleted without them
  understanding why and not being able to restore them.

  If I understand the difference between remove_unused_base_images and
  image_cache_manager_interval, the latter will not enable any of the
  image cache features to run at all. In an odd way, I still find the
  cache manager useful to run - as long as if nothing is removed without
  the user explicitly configuring Nova to do so. If the logs are
  reporting that certain files are up for deletion, this can help the
  user understand what will happen if they turn
  remove_unused_base_images on.

  Please let me know if you have any questions or if I am not
  understanding something correctly.

  Thanks,
  Joe

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