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 [+|-]LogicalExtentsNum‐
       ber[%{VG|LV|PVS|FREE|ORIGIN}]   |   [-L|--size   [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}
       [--poolmetadatasize    [+]MetadataVolumeSize[bBsSkKmMgG]    [-f|--force]     [-n|--nofsck]
       [-r|--resizefs] LogicalVolume{Name|Path} [PhysicalVolumePath[:PE[-PE]]...]

DESCRIPTION
       lvresize  allows  you to resize a logical volume.  Be careful when reducing a logical vol‐
       ume'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 information  about
       creating  snapshots)  is  supported as well.  But to change the number of copies in a mir‐
       rored 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 subtracted from the actual size of the logical volume
              and  without it, the value is taken as an absolute one.  The total number of physi‐
              cal extents affected will be greater than this if, for example, the volume is  mir‐
              rored.   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 Logical Vol‐
              ume  with the suffix %LV, as a percentage of the remaining free space of the Physi‐
              calVolumes on the command line with the suffix %PVS, as a percentage of the remain‐
              ing  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 allocate 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 terabytes, 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 Volume.  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.

       --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 UK             LVM TOOLS 2.02.111(2) (2014-09-01)                    LVRESIZE(8)