centos man page for pvresize

PVRESIZE(8)						      System Manager's Manual						       PVRESIZE(8)

NAME
       pvresize - resize a disk or partition in use by LVM2

SYNOPSIS
       pvresize [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--version] [--setphysicalvolumesize size] PhysicalVolume [PhysicalVolume...]

DESCRIPTION
       pvresize resizes PhysicalVolume which may already be in a volume group and have active logical volumes allocated on it.

OPTIONS
       See lvm(8) for common options.

       --setphysicalvolumesize size
	      Overrides the automatically-detected size of the PV.  Use with care, or prior to reducing the physical size of the device.

EXAMPLES
       Expand the PV on /dev/sda1 after enlarging the partition with fdisk:

       pvresize /dev/sda1

       Shrink the PV on /dev/sda1 prior to shrinking the partition with fdisk (ensure that the PV size is appropriate for your intended new parti-
       tion size):

       pvresize --setphysicalvolumesize 40G /dev/sda1

RESTRICTIONS
       pvresize will refuse to shrink PhysicalVolume if it has allocated extents after where its new end would be. In the future, it should  relo-
       cate these elsewhere in the volume group if there is sufficient free space, like pvmove does.

       pvresize won't currently work correctly on LVM1 volumes or PVs with extra metadata areas.

SEE ALSO
       lvm(8), pvmove(8), lvresize(8), fdisk(8)

Sistina Software UK				     LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26)					       PVRESIZE(8)