NAME¶

lvextend — extend the size of a logical volume

SYNOPSIS¶

lvextend [--alloc AllocationPolicy] [-A|--autobackup {y|n}] [--commandprofile ProfileName] [-d|--debug] [-h|-?|--help] [-f|--force] [-i|--stripes Stripes [-I|--stripesize StripeSize]] {-l|--extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}] | -L|--size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]} [-n|--nofsck] [--noudevsync] [-r|--resizefs] [--use-policies] [-t|--test] [-v|--verbose] LogicalVolumePath [PhysicalVolumePath[:PE[-PE]]...]

DESCRIPTION¶

lvextend allows you to extend the size of a logical volume. Extension of snapshot logical volumes (see lvcreate(8) for information to create 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

Proceed with size extension without prompting.

-l, --extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE|ORIGIN}]

Extend or set the logical volume size in units of logical extents. With the '+' sign the value is added to the actual size of the logical volume and without it, the value is taken as an absolute one. The total number of physical extents allocated will be greater than this, for example, if 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, of the remaining free space for the specified PhysicalVolume(s) 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 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 upper limit for the total number of physical extents to be allocated (including extents used by any mirrors, for example). The code may currently allocate more space than you might otherwise expect.

-L, --size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]

Extend 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 + sign the value is added to 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 for the extension. 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. 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)

-n, --nofsck

Do not perform fsck before extending filesystem when filesystem requires it. You may need to use --force to proceed with this option.

--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.

-r, --resizefs

Resize underlying filesystem together with the logical volume using fsadm(8).

--use-policies

Resizes the logical volume according to configured policy. See lvm.conf(5) for some details.

Examples¶

Extends the size of the logical volume "vg01/lvol10" by 54MiB on physical volume /dev/sdk3. This is only possible if /dev/sdk3 is a member of volume group vg01 and there are enough free physical extents in it:

lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3

Extends the size of logical volume "vg01/lvol01" by the amount of free space on physical volume /dev/sdk3. This is equivalent to specifying "-l +100%PVS" on the command line:

lvextend /dev/vg01/lvol01 /dev/sdk3

Extends a logical volume "vg01/lvol01" by 16MiB using physical extents /dev/sda:8-9 and /dev/sdb:8-9 for allocation of extents:

lvextend -L+16M vg01/lvol01 /dev/sda:8-9 /dev/sdb:8-9

SEE ALSO¶

fsadm(8), lvm(8), lvm.conf(5), lvcreate(8), lvconvert(8), lvreduce(8), lvresize(8), lvchange(8)