Instance backed by ceph goes to Error state with error ""Invalid state of instance files on shared\" while trying to evacuate host.

Issue

• Instances are booted from ceph volumes. While trying to do nova host-evacuate to move instances from a broken compute node to another one as below:

nova host-evacuate --on-shared-storage --target <target-host> <src-host>

Instances go to Error state with below error in the logs.

| fault                                | {"message": "Invalid state of instance files on shared storage", "code": 500, "details": "  File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 343, in decorated_function |
|                                      |     return function(self, context, *args, **kwargs)                                                                                                                                            |
|                                      |   File \"/usr/lib/python2.7/site-packages/nova/compute/manager.py\", line 2947, in rebuild_instance

How can I resolve this?