Change a non-striped LVM LV into a striped LV

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http://serverfault.com – I currently have several logical volumes (LVs) on a volume group (VG). This VG is hosted on a single physical volume (PV). I have a spare drive which I can use to shuffle data around on. I also now have a new drive which matches my original PV drive. I would like to move the existing LVs around and end up with the LVs being striped across the two PVs. Is this possible? How do you do it? (HowTos)