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



NAME
       lvresize -- resize a logical volume

SYNOPSIS
       lvresize	 [--alloc  AllocationPolicy]  [--noudevsync] [--commandprofile
       ProfileName]  [-i|--stripes   Stripes   [-I|--stripesize	  StripeSize]]
       {-l|--extents   [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]   |
       -L|--size [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [--poolmetadatasize
       [+]MetadataVolumeSize[bBsSkKmMgG]]      [-f|--force]	 [-n|--nofsck]
       [--reportformat {basic|json}] [-r|--resizefs]  LogicalVolume{Name|Path}
       [PhysicalVolumePath[:PE[-PE]]...]

DESCRIPTION
       lvresize allows you to resize a logical volume.	Be careful when reduc-
       ing a logical volume's size,  because  data  in	the  reduced  part  is
       lost!!!	 You should therefore ensure that any filesystem on the volume
       is shrunk first so that the extents that are to be removed are  not  in
       use.   Resizing	snapshot logical volumes (see lvcreate(8) for informa-
       tion about creating snapshots) is supported as well.  But to change the
       number of copies in a mirrored logical volume use lvconvert(8).

OPTIONS
       See lvm(8) for common options.

       -f, --force
	      Force resize without prompting even when it may cause data loss.

       -n, --nofsck
	      Do  not  perform fsck before resizing filesystem when filesystem
	      requires it. You may need to use --force to  proceed  with  this
	      option.

       -r, --resizefs
	      Resize  underlying  filesystem  together with the logical volume
	      using fsadm(8).

       -l, --extents [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]
	      Change or set the	 logical  volume  size	in  units  of  logical
	      extents.	 With  the  +  or - sign the value is added to or sub-
	      tracted from the actual size of the logical volume  and  without
	      it,  the value is taken as an absolute one.  The total number of
	      physical extents affected will be	 greater  than	this  if,  for
	      example,	the  volume  is	 mirrored.   The  number  can  also be
	      expressed as a percentage of the total space in the Volume Group
	      with  the suffix %VG, relative to the existing size of the Logi-
	      cal Volume with the suffix %LV, as a percentage of the remaining
	      free  space  of the PhysicalVolumes on the command line with the
	      suffix %PVS, as a percentage of the remaining free space in  the
	      Volume  Group  with  the	suffix %FREE, or (for a snapshot) as a
	      percentage of the total space in the Origin Logical Volume  with
	      the suffix %ORIGIN.  The resulting value is rounded downward for
	      the subtraction otherwise it  is	rounded	 upward.   N.B.	 In  a
	      future  release,	when expressed as a percentage with PVS, VG or
	      FREE, the number will be treated as an approximate total	number
	      of  physical extents to be allocated or freed (including extents
	      used by any mirrors, for example).  The code may currently allo-
	      cate or remove more space than you might otherwise expect.

       -L, --size [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
	      Change  or set the logical volume size in units of megabytes.  A
	      size suffix of M for megabytes, G	 for  gigabytes,  T  for  ter-
	      abytes, P for petabytes or E for exabytes is optional.  With the
	      + or - sign the value is added or	 subtracted  from  the	actual
	      size  of	the logical volume and rounded to the full extent size
	      and without it, the value is taken as an absolute one.

       -i, --stripes Stripes
	      Gives the number of stripes to use when extending a Logical Vol-
	      ume.   Defaults to whatever the last segment of the Logical Vol-
	      ume uses.	 Not applicable to LVs using the original metadata LVM
	      format, which must use a single value throughout.

       --poolmetadatasize [+]MetadataVolumeSize[bBsSkKmMgG]
	      Change  or set the thin pool metadata logical volume size.  With
	      the + sign the value is added to the actual size of the metadata
	      volume  and  rounded to the full extent size and without it, the
	      value is taken as an  absolute  one.   Maximal  size  is	16GiB.
	      Default unit is megabytes.

       -I, --stripesize StripeSize
	      Gives  the  number  of  kilobytes	 for  the  granularity	of the
	      stripes.	Defaults to whatever the last segment of  the  Logical
	      Volume  uses.  Not applicable to LVs using the original metadata
	      LVM format, which must use a single value throughout.
	      StripeSize must be 2^n (n = 2 to 9) for metadata in LVM1 format.
	      For  metadata  in	 LVM2  format, the stripe size may be a larger
	      power of 2 but must not exceed the physical extent size.

       --noudevsync
	      Disable udev synchronisation. The	 process  will	not  wait  for
	      notification  from  udev.	  It will continue irrespective of any
	      possible udev processing in the background.  You should only use
	      this if udev is not running or has rules that ignore the devices
	      LVM2 creates.

EXAMPLES
       Extend  a  logical  volume  vg1/lv1  by	16MB  using  physical  extents
       /dev/sda:0-1 and /dev/sdb:0-1 for allocation of extents:

       lvresize -L+16M vg1/lv1 /dev/sda:0-1 /dev/sdb:0-1

SEE ALSO
       fsadm(8), lvm(8), lvconvert(8), lvcreate(8), lvreduce(8), lvchange(8)



Sistina Software UKLVM TOOLS 2.02.166(2)-RHEL7 (2016-11-16)	   LVRESIZE(8)