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[OpenStack Infra <1549032@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/283861
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=e015a98b9e99dca7b97e97bb48af4392fd34dddb
Submitter: Jenkins
Branch:    master

commit e015a98b9e99dca7b97e97bb48af4392fd34dddb
Author: Chris Friesen <chris.friesen@xxxxxxxxxxxxx>
Date:   Tue Feb 23 17:27:00 2016 -0600

    check max_net_count against min_count when booting
    
    If the user has specified a min_count when booting instances, and
    our calculated max_net_count is smaller than the specified min_count
    then we want to fail with an easily-interpreted error.
    
    Change-Id: I7f8bde68e315dc39942faff4065db927e477e1f1
    Closes-Bug: #1549032


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

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https://bugs.launchpad.net/bugs/1549032

Title:
  max_net_count doesn't interact properly with min_count when booting
  multiple instances

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) liberty series:
  New

Bug description:
  In compute.api.API._create_instance() we have a min_count that is
  optionally passed in by the end user as part of the boot request.

  We calculate max_net_count based on networking constraints.

  Currently we error out if max_net_count is zero, but we don't check it
  against min_count.  If the end user specifies a min_count that is
  greater than the calculated  max_net_count the resulting error isn't
  very useful.

  We know that min_count is guaranteed to be at least 1, so we can
  replace the existing test against zero with one against min_count.
  Doing this gives a much more reasonable error message:

  controller-0:~$ nova boot --image myimage --flavor simple --min-count 2 --max-count 3 test
  ERROR (Forbidden): Maximum number of ports exceeded (HTTP 403) (Request-ID: req-f7ff28bf-5708-4cbf-a634-2e9686afd970)

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