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[Swati Bansal <1693727@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

in  controller+2 Compute node instance is not getting evacuated from one compute node to other compute node. On evacuation it gets stuck with state as rebuilding on the source node.
Below was logged in the destination compute node (/var/log/nova/nova-compute.log):
2017-04-11 00:51:10.006 10570 INFO nova.compute.claims [req-73b67fc8-2e29-4028-924c-2eb3d793bc79 - - - - -] [instance: 95e375bb-d030-4eb7-aa4a-e0ea5091c274] Claim successful

Which means that the resources required for evacuation were successfully claimed. There were no logs showing rebuild activity, where as in newton for the same activity logs(/var/log/nova/nova-compute.log) were showing as:
2017-05-25 15:47:15.612 3210 INFO nova.compute.claims [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] [instance: f6b4899a-60ff-45b7-9dfa-4b1c99158d0c] Claim successful
2017-05-25 15:47:15.803 3210 INFO nova.compute.resource_tracker [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] Updating from migration f6b4899a-60ff-45b7-9dfa-4b1c99158d0c
2017-05-25 15:47:15.830 3210 INFO nova.compute.manager [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] disk not on shared storage, rebuilding from: '598ec845-c0c0-4fd3-a5a0-b30d4d51a30a'


Steps to reproduce:
1> Create an instance on first compute node from CLI in controller node.
2> shutdown nova-compute service on first node.
3> run evacuate command for the created instance giving destination as second node from controller node.

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: evacuate nova

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https://bugs.launchpad.net/bugs/1693727

Title:
  Nova evacuate instance is not working

Status in OpenStack Compute (nova):
  New

Bug description:
  in  controller+2 Compute node instance is not getting evacuated from one compute node to other compute node. On evacuation it gets stuck with state as rebuilding on the source node.
  Below was logged in the destination compute node (/var/log/nova/nova-compute.log):
  2017-04-11 00:51:10.006 10570 INFO nova.compute.claims [req-73b67fc8-2e29-4028-924c-2eb3d793bc79 - - - - -] [instance: 95e375bb-d030-4eb7-aa4a-e0ea5091c274] Claim successful

  Which means that the resources required for evacuation were successfully claimed. There were no logs showing rebuild activity, where as in newton for the same activity logs(/var/log/nova/nova-compute.log) were showing as:
  2017-05-25 15:47:15.612 3210 INFO nova.compute.claims [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] [instance: f6b4899a-60ff-45b7-9dfa-4b1c99158d0c] Claim successful
  2017-05-25 15:47:15.803 3210 INFO nova.compute.resource_tracker [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] Updating from migration f6b4899a-60ff-45b7-9dfa-4b1c99158d0c
  2017-05-25 15:47:15.830 3210 INFO nova.compute.manager [req-363558f0-f488-4f6b-aca5-96604a317da1 38de98b17f774987ba09c5c93955f6cd 92b77d6453eb43ceaf6f127224a7021f - - -] disk not on shared storage, rebuilding from: '598ec845-c0c0-4fd3-a5a0-b30d4d51a30a'


  Steps to reproduce:
  1> Create an instance on first compute node from CLI in controller node.
  2> shutdown nova-compute service on first node.
  3> run evacuate command for the created instance giving destination as second node from controller node.

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