[CentOS] Cloning LVM

I have a workstation with two separate drives set up with LVM.  I'm buying an LSI RAID controller to set up mirrored drives.  I'd like to clone the existing drives over to the new mirrored drives somehow, but not sure the best way to do it.  The original drives & their respective replacements are all identical in size (250GB + 1TB).  I thought about using Clonezilla but wasn't sure how LVM would handle the /dev devices changing.  Any suggestions?

Thanks,  Chris