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[OpenStack Infra <1458934@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/221848
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=26c69a6a62a138ccdb88ecc5bf75330a04e5de0b
Submitter: Jenkins
Branch:    master

commit 26c69a6a62a138ccdb88ecc5bf75330a04e5de0b
Author: Lucas Alvares Gomes <lucasagomes@xxxxxxxxx>
Date:   Wed Jan 13 16:15:12 2016 +0000

    Ironic: Lightweight fetching of nodes
    
    The Ironic API version >= 1.8 supports fetching only a small number of
    a resource instead of it's full representation. This patch is pinning
    the API version for Ironic at 1.8 so the nova driver can benefit from
    this feature by fetching only the required fields for the deployment,
    making it more lightweight and improving the readability of the logs.
    
    The configuration option "api_version" was marked as deprecated and
    should be removed in the future. The only possible value for that
    configuration was "1" (because Ironic only have 1 API version) and the
    ironic team came to an agreement that setting the API version via
    configuration option should not be supported anymore.
    
    Closes-Bug: #1458934
    Change-Id: Iebfa06da6811889e11fd4edf15d47ca4e0feea6f


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1458934

Title:
  Ironic: heavy polling

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  Ironic does poll the Ironic API to check the state of a Node when
  provisioning it, and currently we pool the whole node object
  representation every time. This can be very expensive since the node
  might contain a lot of details and even a base64 string of the
  configdrive registered in it. Plus, this full node representation also
  gets logged in case we use n-cpu with debug mode enabled.

  We need a light way to fetch the states from Nodes in Ironic that can
  be used by the Nova Ironic Driver.

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