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[Sean Dague <sean@xxxxxxxxx>]

feature for performance enhancement

** Changed in: nova
       Status: Incomplete => Opinion

** Changed in: nova
   Importance: Medium => Wishlist

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https://bugs.launchpad.net/bugs/1283325

Title:
  VMware: Same image should not be transferred more than one time on
  concurrent spawn operations

Status in OpenStack Compute (Nova):
  Opinion

Bug description:
  On concurrent spawn operations, the VMware driver transfers the same image into different temporary directories before getting into the cache: the same bits might be downloaded 20 times if 20 spawn operations happen at the same time for a given image (before being cached).
  The goal here is to use a lock to only transfer one time the bits of the image.

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