> lvdisplay --map

  --- Logical volume ---
  LV Name                /dev/volumes/home
  VG Name                volumes
  LV UUID                OAdf3v-zfI1-w5vq-tFVr-Sfgv-yvre-GWFb3v
  LV Write Access        read/write
  LV Status              available
  LV Size                400.00 GiB
  Current LE             12800
  Segments               2
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:2

  --- Segments ---
  Logical extent 0 to 6875:
    Type		linear
    Physical volume	/dev/md0
    Physical extents	0 to 6875

  Logical extent 6876 to 12799:
    Type		linear
    Physical volume	/dev/md0
    Physical extents	6877 to 12800