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[Roman Sokolkov <1595864@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I have Liberty controller (nova-api, etc.) with

[upgrade_levels]
compute=kilo

and Liberty compute node, when i try live-migration
i see "live_migration() takes exactly 7 arguments (6 given)"
in nova-compute.log.

I can not completely remove compatibility with kilo,
because i have kilo computes in my env.

I also tried to add "upgrade_levels" to compute node,
but with no luck.

Environment
==========
Libvirt+KVM, Ceph for VMs
Liberty - Mirantis OpenStack 8.0 (2015.2)

Steps to reproduce
===============
1) Install Liberty control plane (api, conductor, schduler, etc.)
2) Install Liberty computes
3) Add to nova.conf on controller
  [upgrade_levels]
  compute=kilo
3) Try "nova live-migration VM"

Expected result
=============
Migration will succeed

Actual result
==========
Traceback on compute node
http://paste.openstack.org/show/521871/

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1595864

Title:
  live_migration() takes exactly 7 arguments (6 given) if upgrade_levels
  compute=kilo

Status in OpenStack Compute (nova):
  New

Bug description:
  I have Liberty controller (nova-api, etc.) with

  [upgrade_levels]
  compute=kilo

  and Liberty compute node, when i try live-migration
  i see "live_migration() takes exactly 7 arguments (6 given)"
  in nova-compute.log.

  I can not completely remove compatibility with kilo,
  because i have kilo computes in my env.

  I also tried to add "upgrade_levels" to compute node,
  but with no luck.

  Environment
  ==========
  Libvirt+KVM, Ceph for VMs
  Liberty - Mirantis OpenStack 8.0 (2015.2)

  Steps to reproduce
  ===============
  1) Install Liberty control plane (api, conductor, schduler, etc.)
  2) Install Liberty computes
  3) Add to nova.conf on controller
    [upgrade_levels]
    compute=kilo
  3) Try "nova live-migration VM"

  Expected result
  =============
  Migration will succeed

  Actual result
  ==========
  Traceback on compute node
  http://paste.openstack.org/show/521871/

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