Disk /dev/dm-0 doesn't contain a valid partition table如何解决

gnusid

edc:~# pvscan
  PV /dev/hdb2   VG edc   lvm2 [37.03 GB / 0    free]
  Total: 1 [37.03 GB] / in use: 1 [37.03 GB] / in no VG: 0 [0   ]
edc:~# vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "edc" using metadata type lvm2
edc:~# lvscan
  ACTIVE            '/dev/edc/root' [35.61 GB] inherit
  ACTIVE            '/dev/edc/swap_1' [1.42 GB] inherit
edc:~# /sbin/fdisk -l

Disk /dev/hdb: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe36fd7bd

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1   *           1          31      248976   83  Linux
/dev/hdb2              32        4865    38829105   8e  Linux LVM

Disk /dev/dm-0: 38.2 GB, 38231080960 bytes
255 heads, 63 sectors/track, 4647 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-0 doesn't contain a valid partition table

Disk /dev/dm-1: 1526 MB, 1526726656 bytes
255 heads, 63 sectors/track, 185 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/dm-1 doesn't contain a valid partition table
edc:~#
大家出出点子，谢谢