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[OpenStack Infra <1368201@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/307124
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=c2c3b97259258eec3c98feabde3b411b519eae6e
Submitter: Jenkins
Branch:    master

commit c2c3b97259258eec3c98feabde3b411b519eae6e
Author: Moshe Levi <moshele@xxxxxxxxxxxx>
Date:   Mon Apr 18 14:33:59 2016 +0300

    pci: Move PCI devices and PCI requests into migration context
    
    When resizing guest to flavor with pci passthrogth, we need to drop
    the old pci devices and allocate new ones. To be able to do that we
    are leveraging the migration context (that used only for NUMA).
    
    Adds old and new PCI devices/ PCI requests into the MigrationContext
    object and uses the nova.pci.request.get_pci_requests_from_flavor()
    function to grab the set of requested PCI devices during a migration.
    
    Then, in the resource tracker's _update_usage_from_migration() call, we
    use the old and new PCI devices and PCI requests stored in the
    MigrationContext to properly account for changes.
    
    Closes-Bug: #1368201
    Co-Authored-by: Jay Pipes <jaypipes@xxxxxxxxx>
    
    Change-Id: Ie8690f2b7235d677ebe15fabaae81b0a6bda29de


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

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https://bugs.launchpad.net/bugs/1368201

Title:
  resize with PCI devices doesn't work

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  In icehouse, if an active instance without PCI passthrough devices is
  resized with PCI passthrough devices being added in the new flavor,
  the instance will be reported as ACTIVE after resizing, but becomes
  inaccessible. Worse, the whole compute service seems to be hosed, and
  killing it would cause the compute node to hang.

  if an active instance with PCI passthrough devices is resized with
  more PCI passthrough devices in the new flavor, the resulting PCI
  devices in the instance's domain xml are more than being requested,
  and the same symptoms as described above will result as well.

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