How to increase the logical volume
 

HI,
We had configured the Redhat linux 4 with storage.I had created the Volume group (VG01)under that 3 logical volumes.Recently i have increased size of on logical volume by 100G from storage side.When i have tried with lvextend command to increase the size of it is sayig no free space in volume group and i have checked the VG01 free size it is '0'.I have checked from "fdisk -l".it is showing the inncresed space.Any one can help me out to resolve this issue.

You will first have to add the new disk into the volume group before you can extend the volume.
vgextend is what your looking for

Try this : http://tldp.org/HOWTO/LVM-HOWTO/

If your disk have free space, first create a partition of that free space and after that include that partition into volume group. After creating partition using fdisk use vgextend command to include that partition into Volume Group. Now try lvextend.

Thanks