Instance hangs in migrating state after live-migration

[Tatyanka]

test http://jenkins-product.srt.mirantis.net:8080/view/5.0_swarm/job/5.0_fuelmain.system_test.centos.thread_1/47/testReport/%28root%29/migrate_vm_backed_with_ceph/migrate_vm_backed_with_ceph/ failed with

http://paste.openstack.org/show/87591/

according to instance hangs in Migration state, and we receive 400 Bad request when try to get details for this instance.
[root@node-2 ~]# nova list
+--------------------------------------+---------------------+-----------+------------+-------------+-------------------------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+---------------------+-----------+------------+-------------+-------------------------------------+
| 118994db-3ef5-467a-876f-6c3cdffeae41 | test-serv1147266757 | MIGRATING | migrating | Running | novanetwork=10.0.0.5, 10.108.52.191 |
+--------------------------------------+---------------------+-----------+------------+-------------+-------------------------------------+

Attemtps to get server diagnostics finished with
[root@node-2 ~]# nova diagnostics test-serv1147266757

ERROR: The server has either erred or is incapable of performing the requested operation. (HTTP 500) (Request-ID: req-cb48c9ab-eb37-42a7-99c3-b0e46fc2ffdb)

instance reset state push instance to error
[root@node-2 ~]# nova reboot test-serv1147266757
ERROR: Cannot 'reboot' while instance is in task_state migrating (HTTP 409) (Request-ID: req-09a63ecb-b9bc-46e9-afaf-5fd5f1c87bdc)
[root@node-2 ~]# nova reset-state test-serv1147266757
[root@node-2 ~]# nova list
+--------------------------------------+---------------------+--------+------------+-------------+-------------------------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+---------------------+--------+------------+-------------+-------------------------------------+
| 118994db-3ef5-467a-876f-6c3cdffeae41 | test-serv1147266757 | ERROR | - | Running | novanetwork=10.0.0.5, 10.108.52.191 |
+--------------------------------------+---------------------+--------+------------+-------------+-------------------------------------+
[root@node-2 ~]#

Seems it caused by resseting connections to the rabbitmq
http://paste.openstack.org/show/87593/
errors in rabbit=ERROR REPORT==== 22-Jul-2014::04:39:27 ===
closing AMQP connection <0.11236.0> (10.108.54.4:37774 -> 10.108.54.3:5672):
{heartbeat_timeout,running}

=ERROR REPORT==== 22-Jul-2014::04:39:32 ===
closing AMQP connection <0.11722.0> (10.108.54.2:46623 -> 10.108.54.3:5672):
{heartbeat_timeout,running}

=INFO REPORT==== 22-Jul-2014::04:45:10 ===
accepting AMQP connection <0.21380.0> (10.108.54.2:46695 -> 10.108.54.3:5672)

=ERROR REPORT==== 22-Jul-2014::04:47:33 ===
closing AMQP connection <0.12140.0> (10.108.54.2:46626 -> 10.108.54.3:5672):
{heartbeat_timeout,running}

=INFO REPORT==== 22-Jul-2014::04:49:35 ===
accepting AMQP connection <0.23212.0> (10.108.54.3:38884 -> 10.108.54.3:5672)

=INFO REPORT==== 22-Jul-2014::04:49:40 ===
accepting AMQP connection <0.23247.0> (10.108.54.3:38885 -> 10.108.54.3:5672)

=ERROR REPORT==== 22-Jul-2014::04:52:35 ===
closing AMQP connection <0.23212.0> (10.108.54.3:38884 -> 10.108.54.3:5672):
{heartbeat_timeout,running}

=ERROR REPORT==== 22-Jul-2014::04:52:40 ===
closing AMQP connection <0.23247.0> (10.108.54.3:38885 -> 10.108.54.3:5672):
{heartbeat_timeout,running}
(END)

Seems this is duplicate of https://bugs.launchpad.net/mos/+bug/856764 but we nned confirmation from our best and lovelly library team :)