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NetBSD 6.1.5 - man page for pvresize (netbsd section 8)

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PVRESIZE(8)									      PVRESIZE(8)

       pvresize - resize a disk or partition in use by LVM2

       pvresize [-d|--debug] [-h|--help] [-t|--test] [-v|--verbose] [--setphysicalvolumesizesize]
       PhysicalVolume [PhysicalVolume...]

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

       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.

       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 partition size):

       pvresize --setphysicalvolumesize 40G /dev/sda1

       pvresize  will refuse to shrink PhysicalVolume if it has allocated extents after where its
       new end would be. In the future, it should relocate 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.

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

Sistina Software UK		 LVM TOOLS 2.02.44-cvs (02-17-09)		      PVRESIZE(8)
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