LVRESIZE(8) manual page
Table of Contents
lvresize -- resize a logical volume
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] [-r|--resizefs] LogicalVolume{Name|Path} [PhysicalVolumePath[:PE[-PE]]...]
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)
.
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.
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
fsadm(8)
, lvm(8)
, lvconvert(8)
, lvcreate(8)
, lvreduce(8)
,
lvchange(8)
Table of Contents
![[Go to CFHT Home Page]](/images/cfht-icon.gif){kind=icon}
Man Pages 
Back to Software Index 
Manpage Top Level