LVRESIZE
Section: Maintenance Commands (8)
Updated: LVM TOOLS 2.02.66(2) (2010-05-20)
Index
Return to Main Contents
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|ORIGIN}] |
-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|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 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.
- -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)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- Examples
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 19:49:31 GMT, April 27, 2011