I created RAID 5 form 3 hard drives. Formatted as ext4 this raid array. Created VG0 group and lv_home logical volume in LVM. Then I tried to mount default /home directory on lv_home, while trying to mount logical volume lv_home to folder containing user profiles /home, getting error:

mount: wrong fs type, bad option, bad superblock on /dev/mapper/VG0-lv_home

next is seems to be symbolic link:

# file -s /dev/VG0/lv_home
/dev/VG0/lv_home: symbolic link to `../mapper/VG0-lv_home'

then

# file -s /dev/mapper/VG0-lv_home
/dev/mapper/VG0-lv_home: data

and

lvm> pvs
  PV         VG   Fmt  Attr PSize PFree 
  /dev/md0   VG0  lvm2 a-   2.02g 68.00m
lvm> lvdisplay
  --- Logical volume ---
  LV Name                /dev/VG0/lv_home
  VG Name                VG0
  LV UUID                WzJus7-2yV8-yhog-Ju1b-TpWH-IIAI-LIutwe
  LV Write Access        read/write
  LV Status              available
  # open                 0
  LV Size                1.17 GiB
  Current LE             300
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           251:0