[linux-lvm] resizing physical volume

[Stepan Kadlec <skadlec gk-software com>]

Hi,
is there a way to resize the physical partition, that hosts the LVM? can 
it be done just by pvresize or do I have to resize the partition itself 
first? (by fdisk-like program?) I know I could add the free space as a 
new PV, but I would prefer directly extending current PV. is that 
possible? how?
thank you, stepan