trusty (8) lvresize.8.gz

NAME

       lvresize - resize a logical volume

SYNOPSIS

       lvresize  [--alloc  AllocationPolicy]  [--noudevsync] [-i|--stripes Stripes [-I|--stripesize StripeSize]]
       {[-l|--extents         [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]          |          [-L|--size
       [+|-]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}        [-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  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 information 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 subtracted from the actual size of the logical volume and without it, the value  is
              taken  as an absolute one.  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 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  substraction  otherwise
              it is rounded upward.

       -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.

       -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).

       --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)