[linux-lvm] Where install (device or Logical Volume) system Guest

["Lic. Domingo Varela Yahuitl." <domingo varela gmail com>]

Sir:

I have a question - doubt, what is the difference between the
installation of a system Guest  in XEN using the device like so  and
using the logical Volume, here down are those that created

1) I'm have install like device /dev/sda2 (CentOS 47GB) 
2)
and then other like Logical Volume ( all a hard disk /dev/sdb3 as
/dev/XenVolGWin0/XenLogVolWin  also 47GB other server CentOS)

…
somebody can explain to me please the diference

I hope your answers

Thank you