pvscan:
  PV /dev/hdd1    is in exported VG wd_drive [27.95 GB / 2.00 GB free]
  Total: 1 [2.00 GB] / in use: 1 [2.00 GB] / in no VG: 0 [0   ]
===================
vgscan:
  Reading all physical volumes.  This may take a while...
  Found volume group "wd_drive" using metadata type lvm1
===================
lvscan:
  /dev/mapper/control: open failed: No such device
  Is device-mapper driver missing from kernel?
  inactive          '/dev/wd_drive/ora8' [4.88 GB] next free
  inactive          '/dev/wd_drive/oinstall' [1000.00 MB] next free
  inactive          '/dev/wd_drive/usrsrc' [4.88 GB] next free
  inactive          '/dev/wd_drive/usr' [3.91 GB] next free
  inactive          '/dev/wd_drive/home' [7.32 GB] next free
  inactive          '/dev/wd_drive/var' [1000.00 MB] next free
  inactive          '/dev/wd_drive/usrlocal' [1.00 GB] next free
  inactive          '/dev/wd_drive/acsweb' [2.00 GB] next free
modprobe: modprobe: Can't locate module char-major-10-62
===================
vgchange -ay:
  /dev/mapper/control: open failed: No such device
  Is device-mapper driver missing from kernel?
  0 logical volume(s) in volume group "wd_drive" now active
modprobe: modprobe: Can't locate module char-major-10-62