I have reproduced above bug in Juno version Openstack Devstack,
Steps I followed :
1) Launch the instance with proper compute_driver
2) Delete the instance . Command : nova delete InstanceName.
3) Change the content of file /etc/nova/nova.conf as : compute_driver = fake.FakeDriver
4) Restart only all nova services manually. ( Using screen option in devstack)
5) Launch the instance with fake compute driver ( Step 1 repeat).
6) Stop the instance. ( nova stop InstanceName)
I have reproduced above bug in Juno version Openstack Devstack,
Steps I followed :
1) Launch the instance with proper compute_driver
2) Delete the instance . Command : nova delete InstanceName.
3) Change the content of file /etc/nova/nova.conf as : compute_driver = fake.FakeDriver
4) Restart only all nova services manually. ( Using screen option in devstack)
5) Launch the instance with fake compute driver ( Step 1 repeat).
6) Stop the instance. ( nova stop InstanceName)
Regards
Noel Nelson Dsouza