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} [PhysicalVol‐
umePath[: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 total number of physical extents affected will be greater than this if, for exam‐
ple, 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 Logical Volume with the suf‐
fix %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 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 seg‐
ment of the Logical Volume uses. Not applicable to LVs using the original metadata LVM format, which
must use a single value throughout.
--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 2.02.166(2)-RHEL7 (2016-11-16) LVRESIZE(8)
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