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85 lines
3.3 KiB
Groff
85 lines
3.3 KiB
Groff
.TH LVEXTEND 8 "LVM TOOLS #VERSION#" "Sistina Software UK" \" -*- nroff -*-
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.SH NAME
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lvextend \- extend the size of a logical volume
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.SH SYNOPSIS
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.B lvextend
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[\-\-alloc AllocationPolicy]
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[\-A|\-\-autobackup y|n] [\-d|\-\-debug] [\-h|\-?|\-\-help]
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[\-\-noudevsync]
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[\-i|\-\-stripes Stripes [\-I|\-\-stripesize StripeSize]]
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{\-l|\-\-extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE}] |
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\-L|\-\-size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]}
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[\-t|\-\-test]
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[\-v|\-\-verbose] LogicalVolumePath [PhysicalVolumePath[:PE[-PE]]...]
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.SH DESCRIPTION
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lvextend allows you to extend the size of a logical volume.
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Extension of snapshot logical volumes (see
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.B lvcreate(8)
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for information to create snapshots) is supported as well.
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But to change the number of copies in a mirrored logical
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volume use
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.BR lvconvert (8).
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.SH OPTIONS
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See \fBlvm\fP for common options.
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.TP
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.I \-\-noudevsync
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Disable udev synchronisation. The
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process will not wait for notification from udev.
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It will continue irrespective of any possible udev processing
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in the background. You should only use this if udev is not running
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or has rules that ignore the devices LVM2 creates.
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.TP
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.I \-l, \-\-extents [+]LogicalExtentsNumber[%{VG|LV|PVS|FREE}]
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Extend or set the logical volume size in units of logical extents.
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With the + sign the value is added to the actual size
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of the logical volume and without it, the value is taken as an absolute one.
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The number can also be expressed as a percentage of the total space
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in the Volume Group with the suffix %VG, relative to the existing
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size of the Logical Volume with the suffix %LV, of the remaining
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free space for the specified PhysicalVolume(s) with the suffix %PVS,
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or as a percentage of the remaining free space in the Volume Group
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with the suffix %FREE.
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.TP
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.I \-L, \-\-size [+]LogicalVolumeSize[bBsSkKmMgGtTpPeE]
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Extend or set the logical volume size in units of megabytes.
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A size suffix of M for megabytes,
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G for gigabytes, T for terabytes, P for petabytes
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or E for exabytes is optional.
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With the + sign the value is added to the actual size
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of the logical volume and without it, the value is taken as an absolute one.
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.TP
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.I \-i, \-\-stripes Stripes
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Gives the number of stripes for the extension.
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Not applicable to LVs using the original metadata LVM format, which must
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use a single value throughout.
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.TP
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.I \-I, \-\-stripesize StripeSize
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Gives the number of kilobytes for the granularity of the stripes.
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Not applicable to LVs using the original metadata LVM format, which must
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use a single value throughout.
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.br
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StripeSize must be 2^n (n = 2 to 9)
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.SH Examples
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"lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3" tries to extend the size of
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that logical volume by 54MB on physical volume /dev/sdk3.
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This is only possible if /dev/sdk3 is a member of volume group vg01 and
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there are enough free physical extents in it.
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"lvextend /dev/vg01/lvol01 /dev/sdk3" tries to extend the size of that
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logical volume by the amount of free space on physical volume /dev/sdk3.
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This is equivalent to specifying "-l +100%PVS" on the command line.
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.br
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"lvextend -L+16M vg01/lvol01 /dev/sda:8-9 /dev/sdb:8-9"
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.br
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tries to extend a logical volume "vg01/lvol01" by 16MB using physical extents
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/dev/sda:8-9 and /dev/sdb:8-9 for allocation of extents.
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.SH SEE ALSO
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.BR lvm (8),
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.BR lvcreate (8),
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.BR lvconvert (8),
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.BR lvreduce (8),
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.BR lvresize (8),
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.BR lvchange (8)
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