code: def get_volumes(blocks, layout_info):
      
      volumes = {}
  
      vol_blocks_lists = sort.by_vol_id(blocks, layout_info[2])
  
      for vol_rec in blocks[layout_info[0]].vtbl_recs:
          vol_name = vol_rec.name.strip(b'\x00').decode('utf-8')
          if vol_rec.rec_index not in vol_blocks_lists:
              vol_blocks_lists[vol_rec.rec_index] = []
          volumes[vol_name] = description(vol_rec.rec_index, vol_rec, vol_blocks_lists[vol_rec.rec_index])
              
      return volumes
docs: Get a list of UBI volume objects from list of blocks
  
      Arguments:
      List:blocks            -- List of layout block objects
      List:layout_info    -- Layout info (indexes of layout blocks and
                                          associated data blocks.)
  
      Returns:
      Dict -- Of Volume objects by volume name, including any
              relevant blocks.