Resizing logical volumes

[Aad Rijnberg <Aad Rijnberg zonnet nl>]

Hi,

I have installed FC5 using LVM. During installation I chose the /usr volume 
apparently too small, because now there is not enough room to install 
updates.

To solve this problem, I would like to decrease my /home volume (LogVol03) by 
some 3GB and increase the /usr volume (LogVol01) by the same amount. /home 
physically resides on /dev/hda2 whereas /usr resides on /dev/hda3.

I was thinking of using system-config-lvm for this. Is that a good idea? Can 
this whole operation be executed without data loss? It is possible to execute 
system-config-lvm while the partitions are mounted?

Thanks,
Aad