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[Matt Riedemann <mriedem@xxxxxxxxxx>]

** Changed in: nova
       Status: Triaged => Fix Released

** Changed in: nova
     Assignee: (unassigned) => Jake Liu (jake-liu)

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https://bugs.launchpad.net/bugs/1223090

Title:
  The fake compute driver dosen't support live migration

Status in OpenStack Compute (Nova):
  Fix Released

Bug description:
  Currently, OpenStack supports  fake virt driver for performance test
  or POC, for more details please refer to below link:

  https://review.openstack.org/#/c/31876/

  I have installed & configured  such an environment which is multi
  compute nodes with fake virt driver, the main change is that  update
  compute driver to fake virt driver in nova.conf  '[DEFAULT]' section
  on compute node.

   compute_driver = nova.virt.fake.FakeDriver

  
  devstack@devstack:~/devstack$ nova service-list
  +------------------+------------+----------+---------+-------+----------------------------+-----------------+
  | Binary           | Host       | Zone     | Status  | State | Updated_at                 | Disabled Reason |
  +------------------+------------+----------+---------+-------+----------------------------+-----------------+
  | nova-conductor   | devstack   | internal | enabled | up    | 2013-09-10T00:12:43.000000 | None            |
  | nova-compute     | devstack   | nova     | enabled | down  | 2013-09-09T23:38:02.000000 | None            |    
  | nova-cert        | devstack   | internal | enabled | up    | 2013-09-10T00:12:41.000000 | None            |
  | nova-scheduler   | devstack   | internal | enabled | up    | 2013-09-10T00:12:41.000000 | None            |
  | nova-network     | devstack   | internal | enabled | up    | 2013-09-10T00:12:39.000000 | None            |
  | nova-consoleauth | devstack   | internal | enabled | up    | 2013-09-10T00:12:41.000000 | None            |
  | nova-compute     | 1_xhu_node | nova     | enabled | up    | 2013-09-10T00:12:37.000000 | None            |      >>>> fake compute node
  | nova-compute     | 2_xhu_node | nova     | enabled | up    | 2013-09-10T00:12:36.000000 | None            |     >>>> fake compute node
  +------------------+------------+----------+---------+-------+----------------------------+-----------------+

  I tested  some instance actions, such as boot, stop, start, delete,
  resize, cold migrate,suspend and resume, all of them work well, but
  the live migrate failed due to following  error:

  
  2013-09-10 08:16:49.084 TRACE nova.openstack.common.rpc.amqp     network_info)
  2013-09-10 08:16:49.084 TRACE nova.openstack.common.rpc.amqp   File "/opt/stack/nova/nova/virt/fake.py", line 360, in ensure_filtering_rules_for_instance
  2013-09-10 08:16:49.084 TRACE nova.openstack.common.rpc.amqp     raise NotImplementedError('This method is supported only by libvirt.')
  2013-09-10 08:16:49.084 TRACE nova.openstack.common.rpc.amqp NotImplementedError: This method is supported only by libvirt.

  Go through the source code in fake.py, i see the function
  "ensure_filtering_rules_for_instance"  is not implemented, so  i think
  this is a issue here for live migration,  the fake virt driver should
  support live migrate action  to match  the hole instance life cycle
  and  this action also is an useful case for POC and performance test.

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