LVM stuff

[Cyber Source]

Has anyone worked with LVM? FC3 by default uses LVM for partitions and 
from what I have read so far, it looks to have many, many cool 
advantages like striping partitions across different drives for volumes, 
etc. My question is this, has anyone performed a dump/restore or 
whatever would be the equivalent of this on an LVM partition? I have a 
pretty decent howto on it that I found on the web where it seems to be 
to just add the partition (dump) to the volume group and then remove the 
original (restore). I am looking for methods to this because the way I 
am reading this is, if you have say a /dev/hda1 in your original volume 
group and then add /dev/hdb1, would you then have to remove anything, 
since on the subsequent boot, your /dev/hdb1 would then become 
/dev/hda1. I could see then having to remove /dev/hdb1, since it 
wouldn't be there anymore, Anyway......any thoughts? Thanks