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}
[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 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
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 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)
Free and Open Source Software