# Pastebin 3nshcOkr
danny@danny:~$ sudo systemctl start unmount-storage.service;sudo systemctl stop unmount-storage.service;systemctl status -l --no-pager unmount-storage.service
● unmount-storage.service
   Loaded: loaded (/etc/systemd/system/unmount-storage.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sat 2016-08-06 05:41:14 EDT; 5ms ago
  Process: 7884 ExecStop=/bin/umount /media/storage (code=exited, status=32)
  Process: 7878 ExecStart=/bin/true (code=exited, status=0/SUCCESS)
 Main PID: 7878 (code=exited, status=0/SUCCESS)

Aug 06 05:41:14 danny systemd[1]: Started unmount-storage.service.
Aug 06 05:41:14 danny systemd[1]: Stopping unmount-storage.service...
Aug 06 05:41:14 danny umount[7884]: umount: /media/storage: target is busy
Aug 06 05:41:14 danny umount[7884]:         (In some cases useful info about processes that
Aug 06 05:41:14 danny umount[7884]:          use the device is found by lsof(8) or fuser(1).)
Aug 06 05:41:14 danny systemd[1]: unmount-storage.service: Control process exited, code=exited status=32
Aug 06 05:41:14 danny systemd[1]: Stopped unmount-storage.service.
Aug 06 05:41:14 danny systemd[1]: unmount-storage.service: Unit entered failed state.
Aug 06 05:41:14 danny systemd[1]: unmount-storage.service: Failed with result 'exit-code'.
danny@danny:~$