Initializing Physical Volumes
Use the pvcreate command to initialize a block device to be used as a physical volume.
Initialization is analogous to formatting a file system.
The following command initializes /dev/sdd, /dev/sde, and /dev/sdf as LVM physical volumes for later use as part of LVM logical volumes.
pvcreate /dev/sdd /dev/sde /dev/sdf
