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87aca628d6
Add support for lvresize of thin pool metadata device. lvresize --poolmetadatasize +20 vgname/thinpool_lv or lvresize -L +20 vgname/thinpool_lv_tmeta Where the second one allows all the args for resize (striping...) and the first option resizes accoding to the last metadata lv segment.
112 lines
4.5 KiB
Groff
112 lines
4.5 KiB
Groff
.TH LVRESIZE 8 "LVM TOOLS #VERSION#" "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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.RB [ \-\-alloc " " \fIAllocationPolicy ]
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.RB [ \-\-noudevsync ]
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.RB [ \-i | \-\-stripes " " \fIStripes
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.RB [ \-I | \-\-stripesize " " \fIStripeSize ]]
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.RB {[ \-l | \-\-extents
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.RI [ + | \- ] LogicalExtentsNumber [ % { VG | LV | PVS | FREE | ORIGIN "}] |"
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.RB [ \-L | \-\-size
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.RI [ + | \- ] LogicalVolumeSize [ bBsSkKmMgGtTpPeE ]}
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.RB [ \-\-poolmetadatasize
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.RI [ + ] MetadataVolumeSize [ bBsSkKmMgG ]
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.RB [ \-f | \-\-force ]
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.RB [ \-n | \-\-nofsck ]
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.RB [ \-r | \-\-resizefs ]
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.IR LogicalVolume { Name | Path }
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.RI [ PhysicalVolumePath [ :PE [ -PE ]]...]
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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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.BR 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(8) for common options.
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.TP
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.BR \-f ", " \-\-force
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Force resize without prompting even when it may cause data loss.
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.TP
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.BR \-n ", " \-\-nofsck
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Do not perform fsck before resizing filesystem when filesystem
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requires it. You may need to use \fB--force\fR to proceed with
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this option.
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.TP
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.BR \-r ", " \-\-resizefs
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Resize underlying filesystem together with the logical volume using
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\fBfsadm\fR(8).
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.TP
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.IR \fB\-l ", " \fB\-\-extents " [" + | - ] LogicalExtentsNumber [ % { VG | LV | PVS | FREE | ORIGIN }]
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Change or set the logical volume size in units of logical extents.
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With the \fI+\fP or \fI-\fP 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 \fI%VG\fP, relative to the existing
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size of the Logical Volume with the suffix \fI%LV\fP, as a percentage of
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the remaining free space of the PhysicalVolumes on the command line with the
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suffix \fI%PVS\fP, as a percentage of the remaining free space in the
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Volume Group with the suffix \fI%FREE\fP, or (for a snapshot) as a percentage
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of the total space in the Origin Logical Volume with the suffix \fI%ORIGIN\fP.
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The resulting value is rounded downward for the substraction otherwise
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it is rounded upward.
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.TP
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.IR \fB\-L ", " \fB\-\-size " [" + | - ] LogicalVolumeSize [ bBsSkKmMgGtTpPeE ]
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Change or set the logical volume size in units of megabytes.
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A size suffix of \fIM\fP for megabytes,
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\fIG\fP for gigabytes, \fIT\fP for terabytes, \fIP\fP for petabytes
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or \fIE\fP for exabytes is optional.
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With the \fI+\fP or \fI-\fP sign the value is added or subtracted
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from the actual size of the logical volume and rounded
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to the full extent size and without it,
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the value is taken as an absolute one.
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.TP
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.BR \-i ", " \-\-stripes " " \fIStripes
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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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.IR \fB\-\-poolmetadatasize " [" + ] MetadataVolumeSize [ bBsSkKmMgG ]
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Change or set the thin pool metadata logical volume size.
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With the \fI+\fP sign the value is added to the actual size
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of the metadata volume and rounded to the full extent size
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and without it, the value is taken as an absolute one.
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Maximal size is 16GiB. Default unit is megabytes.
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.TP
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.BR \-I ", " \-\-stripesize " " \fIStripeSize
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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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.TP
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.B \-\-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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.SH EXAMPLES
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.br
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Extend a logical volume vg1/lv1 by 16MB using physical extents
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/dev/sda:0-1 and /dev/sdb:0-1 for allocation of extents:
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.sp
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.B lvresize -L+16M vg1/lv1 /dev/sda:0-1 /dev/sdb:0-1
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.SH SEE ALSO
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.BR fsadm (8),
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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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