Description of problem:

Version-Release number of selected component (if applicable):


How reproducible:
always

Steps to Reproduce:
1.man lvs
2.it mentioned 'thin_pool' is the column name can be used by lvs -o
>>>>
              Use -o help to view the full list of columns available.

              Column names include: lv_uuid, lv_name, lv_path, lv_attr, lv_major, lv_minor, lv_read_ahead, lv_kernel_major, lv_kernel_minor, lv_kernel_read_ahead,  lv_size,  seg_count,
              origin,  origin_size,  snap_percent,  copy_percent,  move_pv,  convert_lv,  lv_tags,  mirror_log, thin_pool, modules, segtype, stripes, stripesize, regionsize, chunksize,
              seg_start, seg_start_pe, seg_size, seg_tags, seg_pe_ranges, devices.
>>>
3.but 'lvs -o lv_name,thin_pool vg3' return error, check the usage of lvs, i can find 'lvs -o lv_name,pool_lv' worked well.

so need to change the thin_pool to pool_lv in the above section in lvs man page
  
Actual results:

Expected results:


Additional info: