code: def _is_cow(path):
      '''
      Check if the subvolume is copy on write
      '''
      dirname = os.path.dirname(path)
      return 'C' not in __salt__['file.lsattr'](dirname)[pathf _is_cow(path):
      '''
      Check if the subvolume is copy on write
      '''
      dirname = os.path.dirname(path)
      return 'C' not in __salt__['file.lsattr'](dirname)[path]
docs: Check if the subvolume is copy on write