unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 Traceback (most recent call last):
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/var/lib/juju/agents/unit-ghost-0/charm/hooks/app-storage-attached", line 19, in <module>
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 main()
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/local/lib/python3.5/dist-packages/charms/reactive/__init__.py", line 78, in main
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 bus.dispatch()
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/local/lib/python3.5/dist-packages/charms/reactive/bus.py", line 434, in dispatch
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 _invoke(other_handlers)
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/local/lib/python3.5/dist-packages/charms/reactive/bus.py", line 417, in _invoke
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 handler.invoke()
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/local/lib/python3.5/dist-packages/charms/reactive/bus.py", line 291, in invoke
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 self._action(*args)
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/var/lib/juju/agents/unit-ghost-0/charm/reactive/ghost.py", line 43, in install_app
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 ghost.download_archive()
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "lib/charms/ghost.py", line 29, in download_archive
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 rmtree(node_dist_dir())
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/lib/python3.5/shutil.py", line 478, in rmtree
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 onerror(os.rmdir, path, sys.exc_info())
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 File "/usr/lib/python3.5/shutil.py", line 476, in rmtree
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 os.rmdir(path)
unit-ghost-0[2478]: 2016-06-28 18:39:09 INFO unit.ghost/0.app-storage-attached logger.go:40 OSError: [Errno 16] Device or resource busy: '/srv/app'