5.4.2. Moving Extents to a New Disk

In this example, the logical volume is distributed across three physical volumes in the volume group myvg as follows: 
[root@tng3-1]# pvs -o+pv_used
  PV         VG   Fmt  Attr PSize  PFree  Used
  /dev/sda1  myvg lvm2 a-   17.15G  7.15G 10.00G
  /dev/sdb1  myvg lvm2 a-   17.15G 15.15G  2.00G
  /dev/sdc1  myvg lvm2 a-   17.15G 15.15G  2.00G
We want to move the extents of /dev/sdb1 to a new device, /dev/sdd1.

5.4.2.1. Creating the New Physical Volume

Create a new physical volume from /dev/sdd1. 
[root@tng3-1 ~]# pvcreate /dev/sdd1
  Physical volume "/dev/sdd1" successfully created