Comment 2 for bug 2048837

"According to code of deleting, nova will not disconnect the shared volume from instance when the volume also attached to the other instances on the same node,"

I'm not sure this is correct. we wont disconenct it form the host
but we would disconenct the volume form the instance domain.

those are tow different things.

in the special cases fo deleting a instance the entire domain is being removed so there is no instance after that completes for the volume to be connected too.

for what it's worth this bug may have security implication

we will need to review this carfully