Thanks for the reply.
I have created a third partition, add it as an LVM physical volume and extended the volume group, using this instructions:
Logical Volume Manager: How can I extend a Volume Group? | HowtoForge - Linux Howtos and Tutorials
Code:
# fdisk -l
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 83 Linux
/dev/sda2 14 24321 195254010 8e Linux LVM
/dev/sda3 24322 30401 48837600 8e Linux LVM
How do I check whether or not I can resize my existing partitions?
vgdisplay says that the volume group is resizable.