[linux-lvm] Could not find device errors

["Mag Gam" <magawake gmail com>]

debian:/# lvscan
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g

-2s7u-hveDWS'.
  Couldn't find all physical volumes for volume group testvg.
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g-2s7u-hveDWS'.
  Couldn't find all physical volumes for volume group testvg.
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g-2s7u-hveDWS'.
  Couldn't find all physical volumes for volume group testvg.
  Volume group "testvg" not found

debian:/# pvscan
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g-2s7u-hveDWS'.
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g-2s7u-hveDWS'.
  Couldn't find device with uuid 'Pvmwcl-Z9Zg-rVJv-Q5Si-pP0g-2s7u-hveDWS'.
  PV unknown device   VG testvg   lvm2 [9.31 GB / 0    free]
  PV /dev/hde2        VG testvg   lvm2 [9.31 GB / 0    free]
  PV /dev/hde3        VG testvg   lvm2 [9.31 GB / 3.52 GB free]
  PV /dev/hde4        VG testvg   lvm2 [ 9.32 GB / 9.32 GB free]
  PV /dev/hde1                    lvm2 [9.31 GB]
  Total: 5 [46.57 GB] / in use: 4 [37.26 GB] / in no VG: 1 [9.31 GB]


Anyway to get back this VG or PVs?

TIA