[CentOS-virt] Move Windows within an LV to another pv safely

[Ben M.]

Using CentOS Xen current with the 5.4 update applied.

I need to move a Windows 2008 installation in LVM2 from one pv/vg/lv to 
different disk pv/vg/lv.

What are considered safe ways to move it on same machine and retain a
copy until sure it reboots?

Turn off (shutdown) in Xen create identical extents in target pv/vg/lv 
and mount -t ntfs and cp? dd? rsync?

Or pvmove (doesn't look like it retains a copy)?

Is there an equivalent to AIX cplv?