Live migration over NFS is broken

[Dmitry Borodaenko]

Upstream bug:
https://bugs.launchpad.net/nova/+bug/1346385

Bugfix backported to Mirantis stable/icehouse patch series can be found here:
https://github.com/angdraug/nova/commit/0833569434bf7c73185b5c8fad36c3511732b757

[Roman Podoliaka (rpodolyaka)]

gerrit didn't change the status on merge

[Alexander Gubanov (ogubanov)]

I verified it on 5.1 - works!

proof:

[root@node-2 ~]# mount | grep instances
10.20.0.5:/var/lib/nova/instances on /var/lib/nova/instances type nfs (rw,addr=10.20.0.5)

[root@node-2 ~]# nova list
+--------------------------------------+-------+--------+------------+-------------+---------------------+
| ID | Name | Status | Task State | Power State | Networks |
+--------------------------------------+-------+--------+------------+-------------+---------------------+
| ac8974b6-eaa2-449c-90aa-335acafa27f0 | test2 | ACTIVE | - | Running | net04=192.168.111.5 |
+--------------------------------------+-------+--------+------------+-------------+---------------------+

[root@node-2 ~]# nova show test2 | grep host
| OS-EXT-SRV-ATTR:host | node-3.domain.tld |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-3.domain.tld |
| hostId | a6a06219145091ab4a9f7621eb00bc1950b7d35d6e637b24dbd79389 |

[root@node-2 ~]# nova live-migration ac8974b6-eaa2-449c-90aa-335acafa27f0 node-2.domain.tld

[root@node-2 ~]# nova show test2 | grep host
| OS-EXT-SRV-ATTR:host | node-2.domain.tld |
| OS-EXT-SRV-ATTR:hypervisor_hostname | node-2.domain.tld |
| hostId | 5c9d9923d6ef4a86e1c1b32e333a075ecec0f97258f956083ce835c3 |