# fdisk -lu /var/data_vg/vm1-disk
last_lba(): I don't know how to handle files with mode 81ed
You must set cylinders.
You can do this from the extra functions menu.

Disk /var/data_vg/vm1-disk: 0 MB, 0 bytes
255 heads, 63 sectors/track, 0 cylinders, total 0 sectors
Units = sectors of 1 * 512 = 512 bytes

                Device Boot      Start         End      Blocks   Id  System
/var/data_vg/vm1-disk1   *          63      208844      104391   83  Linux
/var/data_vg/vm1-disk2          208845    10474379     5132767+  8e  Linux LVM