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]} [--poolmetadata-
size [+]MetadataVolumeSize[bBsSkKmMgG] [-f|--force] [-n|--nofsck]
[-r|--resizefs] LogicalVolume{Name|Path} [PhysicalVol-
umePath[: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 UK LVM TOOLS 2.02.111(2) (2014-09-01) LVRESIZE(8)
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