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[wangxiyuan <wangxiyuan@xxxxxxxxxx>]

https://blueprints.launchpad.net/glance/+spec/add-location-manage-
mechanism

** Changed in: glance
       Status: New => Invalid

** Changed in: glance
     Assignee: wangxiyuan (wangxiyuan) => (unassigned)

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https://bugs.launchpad.net/bugs/1495884

Title:
  image's backend file was deleted while it was still being use.

Status in Glance:
  Invalid

Bug description:
  Reproduce:

  1.create an image A, add backend 'X'  to it's location .

  2.create another image B, add the same backend 'X' to it's location.

  3.show the two image, their status are both 'active'.

  4.delete image A.  After this setep, the backend X will be deleted as
  well.

  5. show the image B. Its status is still 'active'. Obviously, image
  B's backend file  'X' has been deleted, So B can't be use anymore.

  So IMHO, before we delete the backend file, we should check that
  whether the file is being use. If yes, we should not delete it
  directly.

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