[root@localhost proc]# lvmdiskscan
  /dev/md0  [      196.00 MB]
  /dev/sda1 [       54.88 MB]
  /dev/root [      226.62 GB]
  /dev/sda2 [        4.01 GB]
  /dev/md2  [        1.95 GB]
  /dev/sda4 [        1.00 KB]
  /dev/sdb1 [       54.88 MB]
  /dev/sdb2 [        4.01 GB]
  /dev/sdb4 [        1.00 KB]
  1 disk
  8 partitions
  0 LVM physical volume whole disks
  0 LVM physical volumes
[root@localhost proc]#