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76 lines
2.8 KiB
Groff
76 lines
2.8 KiB
Groff
.TH VGSPLIT 8 "LVM TOOLS #VERSION#" "Sistina Software UK" \" -*- nroff -*-
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.SH NAME
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vgsplit \- split a volume group into two
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.SH SYNOPSIS
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.B vgsplit
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.RB [ \-\-alloc
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.IR AllocationPolicy ]
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.RB [ \-A | \-\-autobackup " {" y | n }]
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.RB [ \-c | \-\-clustered " {" y | n }]
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.RB [ \-d | \-\-debug ]
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.RB [ \-h | \-\-help ]
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.RB [ \-l | \-\-maxlogicalvolumes
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.IR MaxLogicalVolumes ]
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.RB [ -M | \-\-metadatatype
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.IR type ]
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.RB [ -p | \-\-maxphysicalvolumes
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.IR MaxPhysicalVolumes ]
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.RB [ \-\-[vg]metadatacopies ]
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.IR NumberOfCopies|unmanaged|all ]
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.RB [ \-n | \-\-name
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.IR LogicalVolumeName ]
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.RB [ \-t | \-\-test ]
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.RB [ \-v | \-\-verbose ]
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SourceVolumeGroupName DestinationVolumeGroupName
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[ PhysicalVolumePath ...]
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.SH DESCRIPTION
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.B vgsplit
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moves one or more physical volumes from
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.I SourceVolumeGroupName
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into
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.I DestinationVolumeGroupName\fP. The physical volumes moved can be
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specified either explicitly via \fIPhysicalVolumePath\fP, or implicitly by
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\fB-n\fP \fILogicalVolumeName\fP, in which case only physical volumes
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underlying the specified logical volume will be moved.
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If
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.I DestinationVolumeGroupName
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does not exist, a new volume group will be created. The default attributes
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for the new volume group can be specified with \fB\-\-alloc\fR,
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\fB\-\-clustered\fR, \fB\-\-maxlogicalvolumes\fR, \fB\-\-metadatatype\fR,
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\fB\-\-maxphysicalvolumes\fR and \fB\-\-[vg]metadatacopies\fR,
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(see \fBvgcreate(8)\fR for a description of these options). If any
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of these options are not given, default attribute(s) are taken from
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.I SourceVolumeGroupName\fP. If a non-LVM2 metadata type (e.g. lvm1) is
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being used, you should use the -M option to specify the metadata type
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directly.
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If
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.I DestinationVolumeGroupName
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does exist, it will be checked for compatibility with
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.I SourceVolumeGroupName
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before the physical volumes are moved. Specifying any of the above default
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volume group attributes with an existing destination volume group is an error,
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and no split will occur.
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Logical volumes cannot be split between volume groups. \fBVgsplit(8)\fP only
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moves complete physical volumes: To move part of a physical volume, use
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\fBpvmove(8)\fP. Each existing logical volume must be entirely on the physical
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volumes forming either the source or the destination volume group. For this
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reason, \fBvgsplit(8)\fP may fail with an error if a split would result in a
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logical volume being split across volume groups.
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A \fBvgsplit\fP into an existing volume group retains the existing volume group's
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value of \fPvgmetadatacopies\fP (see \fBvgcreate\fP and \fBlvm.conf\fP for further
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explanation of \fPvgmetadatacopies\fP). To change the value of
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\fBvgmetadatacopies\fP, use \fBvgchange\fP.
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.SH OPTIONS
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See \fBlvm\fP for common options.
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.SH SEE ALSO
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.BR lvm (8),
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.BR vgcreate (8),
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.BR vgextend (8),
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.BR vgreduce (8),
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.BR vgmerge (8)
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