NAME
lvresize - resize a logical volume
SYNOPSIS
lvresize [--alloc AllocationPolicy] [-A|--autobackup y|n] [-d|--debug]
[-h|-?|--help] [--noudevsync] [-i|--stripes Stripes [-I|--stripesize
StripeSize]] {-l|--extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE}] |
-L|--size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [-t|--test]
[-v|--verbose] LogicalVolumePath [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 for common options.
--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.
-l, --extents [+|-]LogicalExtentsNumber[%{VG|LV|PVS|FREE}]
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, or as a percentage of the remaining
free space in the Volume Group with the suffix %FREE.
-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 to or subtracted from 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 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)
Examples
"lvresize -L+16M vg1/lv1 /dev/sda:0-1 /dev/sdb:0-1"
tries to extend a logical volume "vg1/lv1" by 16MB using physical
extents /dev/sda:0-1 and /dev/sdb:0-1 for allocation of extents.
SEE ALSO
lvm(8), lvconvert(8), lvcreate(8), lvreduce(8), lvchange(8)