Open Stack

Hello!


Can please anybody tell me, if all resources which are created 
within a Heat stack belong to the stack in the way that
all the resources are freed / deleted when the stack is deleted?

IMHO all resources which are created during the initial creation or
update of a stack, even if they are ephemeral or only internal
created, must be deleted when the stack is deleted by OpenStack Heat
itself. Correct?

My question might see obvious, but I did not find an explicit hint in
the documentation stating this.


The reason for my question: I have a Heat template which uses two
images to create a server (using block_device_mapping_v2). Every time
I run an 'openstack stack create' and 'openstack stack delete' cycle
one ephemeral volume is left over / gets not deleted.
For me this sounds like a problem in OpenStack (Heat).
(It looks that this is at least similar to 
https://review.opendev.org/#/c/341008/
which never made it into master.)


Kind regards

Andre