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[Xavier Queralt <1281973@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

When booting an instance, in the API layer, we get the image to be used
for this instance or, if the instance is booted from a volume, the image
metadata attached to the volume (if present). This allows us to know a
bit more of the volume through the inherited properties of the image
from where it was created. This same image metadata is then passed to
the selected compute manager for processing the request.

Right now the compute manager completely ignores the image metadata and
tries to obtain it only if the instance is booted from an image. This
prevents us from obtaining some properties present in the volume that
might be needed while starting the instance (think about the
hw_disk_bus). Besides, it requires of an extra call to glance that can
be avoided.

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1281973

Title:
  Compute manager ignores image_meta from api when booting an instance

Status in OpenStack Compute (Nova):
  New

Bug description:
  When booting an instance, in the API layer, we get the image to be
  used for this instance or, if the instance is booted from a volume,
  the image metadata attached to the volume (if present). This allows us
  to know a bit more of the volume through the inherited properties of
  the image from where it was created. This same image metadata is then
  passed to the selected compute manager for processing the request.

  Right now the compute manager completely ignores the image metadata
  and tries to obtain it only if the instance is booted from an image.
  This prevents us from obtaining some properties present in the volume
  that might be needed while starting the instance (think about the
  hw_disk_bus). Besides, it requires of an extra call to glance that can
  be avoided.

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