Comment 7 for bug 1396965

I just marked bug 1391196 as a duplicate to group all the comments together. Also removing the assignee as this hasn't been updated in about 7 months.

Doing a little research about this, detach root device volume when in shutoff state was disabled because it can cause damage to the guest under certain conditions, rendering it unusable. From what I gathered in #openstack-nova, being able to detach root device volume in shutoff state can be a useful ability, but adding it back should be done with careful checking around it, to prevent guest damage.