Comment 5 for bug 1746073

I just found this:

"""
For AWS, we tag the root disk EBS volume with:

   key=Name
   value=${INST_ID}-root

So if you add a machine in Juju and it gets assigned the instance ID
"inst-foo", then the root disk EBS volume will have a Name tag with the
value "inst-foo-root".
"""
Source: https://lists.ubuntu.com/archives/juju/2017-October/009640.html