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e.g. lvcreate -l 100%FREE to create an LV using all available space.
lvextend -l 50%LV to increase an LV by 50% of its existing size.
lvcreate -l 20%VG to create an LV using 20% of the total VG size.
63 lines
2.5 KiB
Groff
63 lines
2.5 KiB
Groff
.TH LVRESIZE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
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.SH NAME
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lvresize \- resize a logical volume
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.SH SYNOPSIS
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.B lvresize
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[\-\-alloc AllocationPolicy]
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[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help]
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[\-i/\-\-stripes Stripes [\-I/\-\-stripesize StripeSize]]
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{\-l/\-\-extents [+]LogicalExtentsNumber[%{VG|LV|FREE}] |
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\-L/\-\-size [+]LogicalVolumeSize[kKmMgGtT]}
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[\-t/\-\-test]
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[\-v/\-\-verbose] LogicalVolumePath [PhysicalVolumePath...]
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.SH DESCRIPTION
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lvresize allows you to resize a logical volume.
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Be careful when reducing a logical volume's size, because data in the reduced
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part is lost!!!
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You should therefore ensure that any filesystem on the volume is
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shrunk first so that the extents that are to be removed are not in use.
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Resizing snapshot logical volumes (see
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.B lvcreate(8)
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for information about creating 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 \-l, \-\-extents [+/-]LogicalExtentsNumber[%{VG|LV|FREE}]
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Change or set the logical volume size in units of logical extents.
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With the + or - sign the value is added to or subtracted from 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 or relative to the existing
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size of the Logical Volume with the suffix %LV or as a percentage of the remaining
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free space in the Volume Group with the suffix %FREE.
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.TP
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.I \-L, \-\-size [+/-]LogicalVolumeSize[kKmMgGtT]
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Change or set the logical volume size in units of megabytes.
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A size suffix of M for megabytes, G for gigabytes or T for terabytes is
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optional. With the + or - sign the value is added to or subtracted from
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the actual size of the logical volume and without it, the value is taken as an
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absolute one.
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.TP
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.I \-i, \-\-stripes Stripes
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Gives the number of stripes to use when extending a Logical Volume.
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Defaults to whatever the last segment of the Logical Volume uses.
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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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Defaults to whatever the last segment of the Logical Volume uses.
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Not applicable to LVs using the original metadata LVM format, which
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must 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 SEE ALSO
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.BR lvm (8),
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.BR lvconvert (8),
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.BR lvcreate (8),
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.BR lvreduce (8),
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.BR lvchange (8)
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