when downloading glance image to vmware datastore, it cost too much time

[xhzhf]

When creating vm with VMware dirver, nova compute first download image from glance to datastore. It is very slowly. Because nova compute interactive with vCenter to put file, not ESX.

We compare performance. Interactiving with ESX is faster at least six times.

Fix: at first, we get esx cookies from vCenter, then we use cookies to put files to esx datastore.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/juno
Review: https://review.openstack.org/134965

[OpenStack Infra (hudson-openstack)]

Change abandoned by xhzhf ([e-mail]) on branch: stable/juno
Review: https://review.openstack.org/134965

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/135625

[OpenStack Infra (hudson-openstack)]

Change abandoned by Alan Pevec (<email address hidden>) on branch: stable/juno
Review: https://review.openstack.org/134965
Reason: Cherry pick from master when merged.
NB when doing that, make sure to keep the change-id
 https://wiki.openstack.org/wiki/StableBranch#Proposing_Fixes
 https://wiki.openstack.org/wiki/StableBranch#Change-Ids

[Davanum Srinivas (DIMS) (dims-v)]

Fix proposed in https://review.openstack.org/#/c/135625/ is still in progress.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/135625
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=b0e5fe33b7d7cba3c0a0e0af417aa8128b477011
Submitter: Jenkins
Branch: master

commit b0e5fe33b7d7cba3c0a0e0af417aa8128b477011
Author: xhzhf <[e-mail]>
Date: Sun Feb 8 08:48:30 2015 +0800

    VMware driver: Increasing speed of downloading image

    When creating a vm, VMware driver download image from glance to vCenter.
    Then vCenter will forward to ESXi. It cost too much time.
    This patch downloads the image to ESXi directly rather than vCenter
    in order to increase speed

    Co-Authored-By: Radoslav Gerganov <email address hidden>

    Closes-Bug: 1390111

    Change-Id: I9d52d4b992a431e28d841629d0240aa949e9e31f