root@ubuntu:/mnt# lvdisplay -m
  --- Logical volume ---
  LV Name                /dev/LVG/SWAP_VOL
  VG Name                LVG
  LV UUID                sL3w7S-007j-H0KL-Y6xN-RMl0-nwVi-afd2jF
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                8.00 GiB
  Current LE             2048
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Segments ---
  Logical extent 0 to 2047:
    Type		linear
    Physical volume	/dev/sdb1
    Physical extents	0 to 2047


  --- Logical volume ---
  LV Name                /dev/LVG/ROOT_VOL
  VG Name                LVG
  LV UUID                aIP0kV-NMpe-1015-ia7C-10dB-prnm-RiGRS3
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                141.05 GiB
  Current LE             36110
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

  --- Segments ---
  Logical extent 0 to 19078:
    Type		linear
    Physical volume	/dev/dm-1
    Physical extents	0 to 19078

  Logical extent 19079 to 36109:
    Type		linear
    Physical volume	/dev/sdb1
    Physical extents	2048 to 19078