Hello,

I recently ran a volume deletion test with deferred deletion enabled on the pike release.

We experienced a cinder-volume hung when we were deleting a large amount of the volume in which the data was actually written(I make 15GB file in every volumes), and we thought deferred deletion would solve it.

However, while deleting 200 volumes, after 50 volumes, the cinder-volume downed as before. In my opinion, the trash_move api does not seem to work properly when removing multiple volumes, just like remove api.

If these test results are my fault, please let me know the correct test method.