code: def init_volumes(self, single=None, only_mount=None, skip_mount=None, swallow_exceptions=True):
          
  
          for disk in self.disks:
              logger.info("Mounting volumes in {0}".format(disk))
              for volume in disk.init_volumes(single, only_mount, skip_mount, swallow_exceptions=swallow_exceptions):
                  yield volume
docs: Detects volumes (as volume system or as single volume) in all disks and yields the volumes. This calls
          :func:`Disk.init_volumes` on all disks and should be called after :func:`mount_disks`.
  
          :rtype: generator