Comment 10 for bug 1287185

Reviewed: https://review.openstack.org/106334
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=5eac161aa81a68e7cc4adb92798f6c3e849da81c
Submitter: Jenkins
Branch: master

commit 5eac161aa81a68e7cc4adb92798f6c3e849da81c
Author: Vipin Balachandran <email address hidden>
Date: Sun Jun 29 19:02:20 2014 +0530

    VMware: Volume from non-streamOptimized image

    Volume creation from non-streamOptimized images (preallocated/thin/sparse)
    has following problems:

    1) Sparse vmdk image is not converted to appropriate virtual disk type
       suitable for attaching to a nova instance.
    2) The adapter type in image meta-data is ignored while creating volumes.
    3) The vmware:vmdk_type extra_spec property is ignored.
    4) Virtual disk extent operation is called with a wrong parameter which
       might result in unwanted disk provisioning type conversion.

    This patch fixes the first 3 problems using the following workflow:

    a) Create a disk-less backing.
    b) Create a virtual disk (single flat extent) from the non-streamOptimized
       image
    c) Attach the virtual disk to the backing
    d) Clone the backing (if needed) to perform disk provisioning type conversion

    Closes-Bug: #1287176
    Closes-Bug: #1287185
    Closes-Bug: #1284284
    Change-Id: Ib7e9fae81d69d2fe490a4b603337f3d5cee1138c