LVEXTEND(8) System Manager's Manual LVEXTEND(8)
NAME
lvextend — extend the size of a logical volume
SYNOPSIS
lvextend [--alloc AllocationPolicy] [-A|--autobackup {y|n}] [--commandprofile ProfileName] [-d|--debug]
[-h|-?|--help] [-f|--force] [-i|--stripes Stripes [-I|--stripesize StripeSize]] {-l|--extents [+]LogicalEx‐
tentsNumber[%{VG|LV|PVS|FREE|ORIGIN}] | -L|--size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [-n|--nofsck]
[--noudevsync] [-r|--resizefs] [--reportformat {basic|json}] [--use-policies] [-t|--test] [-v|--verbose] Logi‐
calVolumePath [PhysicalVolumePath[:PE[-PE]]...]
DESCRIPTION
lvextend allows you to extend the size of a logical volume. Extension of snapshot logical volumes (see lvcre‐
ate(8) for information to create 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
Proceed with size extension without prompting.
-l, --extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]
Extend or set the logical volume size in units of logical extents. With the '+' sign the value is
added to the actual size of the logical volume and without it, the value is taken as an absolute one.
The total number of physical extents allocated will be greater than this, for example, if 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 suffix %LV, of the remain‐
ing free space for the specified PhysicalVolume(s) 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
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 upper limit for the total number of physical extents to be allocated
(including extents used by any mirrors, for example). The code may currently allocate more space than
you might otherwise expect.
-L, --size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
Extend 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 + sign the value
is added to the actual size of the logical volume and without it, the value is taken as an absolute
one.
-i, --stripes Stripes
Gives the number of stripes for the extension. 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. 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)
-n, --nofsck
Do not perform fsck before extending filesystem when filesystem requires it. You may need to use
--force to proceed with this option.
--noudevsync
Disable udev synchronisation. The process will not wait for notification from udev. It will continue
sible if /dev/sdk3 is a member of volume group vg01 and there are enough free physical extents in it:
lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3
Extends the size of logical volume "vg01/lvol01" by the amount of free space on physical volume /dev/sdk3.
This is equivalent to specifying "-l +100%PVS" on the command line:
lvextend /dev/vg01/lvol01 /dev/sdk3
Extends a logical volume "vg01/lvol01" by 16MiB using physical extents /dev/sda:8-9 and /dev/sdb:8-9 for allo‐
cation of extents:
lvextend -L+16M vg01/lvol01 /dev/sda:8-9 /dev/sdb:8-9
SEE ALSO
fsadm(8), lvm(8), lvm.conf(5), lvcreate(8), lvconvert(8), lvreduce(8), lvresize(8), lvchange(8)
Sistina Software UK LVM TOOLS 2.02.166(2)-RHEL7 (2016-11-16) LVEXTEND(8)
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