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426 lines
9.6 KiB
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426 lines
9.6 KiB
Plaintext
.TH VGEXTEND 8 "LVM TOOLS #VERSION#" "Red Hat, Inc."
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.SH NAME
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vgextend - Add physical volumes to a volume group
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.
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.SH SYNOPSIS
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\fBvgextend\fP \fIposition_args\fP
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.br
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[ \fIoption_args\fP ]
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.br
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.SH DESCRIPTION
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vgextend adds one or more PVs to a VG. This increases the space available
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for LVs in the VG.
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Also, PVs that have gone missing and then returned, e.g. due to a
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transient device failure, can be added back to the VG without
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re-initializing them (see --restoremissing).
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If the specified PVs have not yet been initialized with pvcreate, vgextend
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will initialize them. In this case pvcreate options can be used, e.g.
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--labelsector, --metadatasize, --metadataignore,
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--pvmetadatacopies, --dataalignment, --dataalignmentoffset.
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.SH USAGE
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\fBvgextend\fP \fIVG\fP \fIPV\fP ...
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.br
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.RS 4
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.ad l
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[ \fB-A\fP|\fB--autobackup\fP \fBy\fP|\fBn\fP ]
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.ad b
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.br
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.ad l
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[ \fB-f\fP|\fB--force\fP ]
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.ad b
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.br
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.ad l
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[ \fB-Z\fP|\fB--zero\fP \fBy\fP|\fBn\fP ]
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.ad b
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.br
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.ad l
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[ \fB-M\fP|\fB--metadatatype\fP \fBlvm2\fP|\fBlvm1\fP ]
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.ad b
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.br
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.ad l
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[ \fB--labelsector\fP \fINumber\fP ]
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.ad b
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.br
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.ad l
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[ \fB--metadatasize\fP \fISize\fP[m|UNIT] ]
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.ad b
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.br
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.ad l
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[ \fB--pvmetadatacopies\fP \fB0\fP|\fB1\fP|\fB2\fP ]
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.ad b
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.br
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.ad l
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[ \fB--metadataignore\fP \fBy\fP|\fBn\fP ]
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.ad b
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.br
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.ad l
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[ \fB--dataalignment\fP \fISize\fP[k|UNIT] ]
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.ad b
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.br
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.ad l
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[ \fB--dataalignmentoffset\fP \fISize\fP[k|UNIT] ]
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.ad b
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.br
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.ad l
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[ \fB--reportformat\fP \fBbasic\fP|\fBjson\fP ]
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.ad b
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.br
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.ad l
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[ \fB--restoremissing\fP ]
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.ad b
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.br
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[ COMMON_OPTIONS ]
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.RE
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.br
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Common options for lvm:
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.
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.RS 4
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.ad l
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[ \fB-d\fP|\fB--debug\fP ]
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.ad b
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.br
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.ad l
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[ \fB-h\fP|\fB--help\fP ]
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.ad b
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.br
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.ad l
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[ \fB-q\fP|\fB--quiet\fP ]
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.ad b
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.br
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.ad l
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[ \fB-t\fP|\fB--test\fP ]
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.ad b
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.br
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.ad l
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[ \fB-v\fP|\fB--verbose\fP ]
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.ad b
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.br
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.ad l
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[ \fB-y\fP|\fB--yes\fP ]
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.ad b
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.br
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.ad l
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[ \fB--commandprofile\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--config\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--driverloaded\fP \fBy\fP|\fBn\fP ]
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.ad b
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.br
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.ad l
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[ \fB--longhelp\fP ]
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.ad b
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.br
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.ad l
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[ \fB--profile\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--version\fP ]
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.ad b
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.RE
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.SH OPTIONS
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.HP
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.ad l
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\fB-A\fP|\fB--autobackup\fP \fBy\fP|\fBn\fP
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.br
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Specifies if metadata should be backed up automatically after a change.
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Enabling this is strongly advised! See vgcfgbackup(8) for more information.
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.ad b
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.HP
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.ad l
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\fB--commandprofile\fP \fIString\fP
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.br
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The command profile to use for command configuration.
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See \fBlvm.conf\fP(5) for more information about profiles.
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.ad b
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.HP
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.ad l
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\fB--config\fP \fIString\fP
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.br
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Config settings for the command. These override lvm.conf settings.
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The String arg uses the same format as lvm.conf,
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or may use section/field syntax.
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See \fBlvm.conf\fP(5) for more information about config.
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.ad b
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.HP
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.ad l
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\fB--dataalignment\fP \fISize\fP[k|UNIT]
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.br
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Align the start of the data to a multiple of this number.
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Also specify an appropriate Physical Extent size when creating a VG.
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To see the location of the first Physical Extent of an existing PV,
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use pvs -o +pe_start. In addition, it may be shifted by an alignment offset.
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See lvm.conf/data_alignment_offset_detection and --dataalignmentoffset.
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.ad b
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.HP
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.ad l
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\fB--dataalignmentoffset\fP \fISize\fP[k|UNIT]
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.br
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Shift the start of the data area by this additional offset.
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.ad b
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.HP
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.ad l
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\fB-d\fP|\fB--debug\fP ...
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.br
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Set debug level. Repeat from 1 to 6 times to increase the detail of
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messages sent to the log file and/or syslog (if configured).
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.ad b
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.HP
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.ad l
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\fB--driverloaded\fP \fBy\fP|\fBn\fP
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.br
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If set to no, the command will not attempt to use device-mapper.
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For testing and debugging.
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.ad b
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.HP
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.ad l
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\fB-f\fP|\fB--force\fP ...
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.br
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Override various checks, confirmations and protections.
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Use with extreme caution.
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.ad b
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.HP
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.ad l
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\fB-h\fP|\fB--help\fP
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.br
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Display help text.
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.ad b
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.HP
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.ad l
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\fB--labelsector\fP \fINumber\fP
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.br
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By default the PV is labelled with an LVM2 identifier in its second
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sector (sector 1). This lets you use a different sector near the
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start of the disk (between 0 and 3 inclusive - see LABEL_SCAN_SECTORS
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in the source). Use with care.
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.ad b
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.HP
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.ad l
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\fB--longhelp\fP
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.br
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Display long help text.
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.ad b
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.HP
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.ad l
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\fB--metadataignore\fP \fBy\fP|\fBn\fP
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.br
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Specifies the metadataignore property of a PV.
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If yes, metadata areas on the PV are ignored, and lvm will
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not store metadata in the metadata areas of the PV.
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If no, lvm will store metadata on the PV.
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.ad b
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.HP
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.ad l
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\fB--metadatasize\fP \fISize\fP[m|UNIT]
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.br
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The approximate amount of space used for each VG metadata area.
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The size may be rounded.
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.ad b
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.HP
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.ad l
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\fB-M\fP|\fB--metadatatype\fP \fBlvm2\fP|\fBlvm1\fP
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.br
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Specifies the type of on-disk metadata to use.
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\fBlvm2\fP (or just \fB2\fP) is the current, standard format.
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\fBlvm1\fP (or just \fB1\fP) is a historical format that
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can be used for accessing old data.
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.ad b
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.HP
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.ad l
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\fB--profile\fP \fIString\fP
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.br
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An alias for --commandprofile or --metadataprofile, depending
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on the command.
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.ad b
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.HP
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.ad l
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\fB--pvmetadatacopies\fP \fB0\fP|\fB1\fP|\fB2\fP
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.br
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The number of metadata areas to set aside on a PV for storing VG metadata.
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When 2, one copy of the VG metadata is stored at the front of the PV
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and a second copy is stored at the end.
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When 1, one copy of the VG metadata is stored at the front of the PV
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(starting in the 5th sector).
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When 0, no copies of the VG metadata are stored on the given PV.
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This may be useful in VGs containing many PVs (this places limitations
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on the ability to use vgsplit later.)
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.ad b
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.HP
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.ad l
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\fB-q\fP|\fB--quiet\fP ...
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.br
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Suppress output and log messages. Overrides --debug and --verbose.
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Repeat once to also suppress any prompts with answer 'no'.
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.ad b
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.HP
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.ad l
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\fB--reportformat\fP \fBbasic\fP|\fBjson\fP
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.br
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Overrides current output format for reports which is defined globally by
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the report/output_format setting in lvm.conf.
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\fBbasic\fP is the original format with columns and rows.
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If there is more than one report per command, each report is prefixed
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with the report name for identification. \fBjson\fP produces report
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output in JSON format. See \fBlvmreport\fP(7) for more information.
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.ad b
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.HP
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.ad l
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\fB--restoremissing\fP
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.br
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Add a PV back into a VG after the PV was missing and then returned,
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e.g. due to a transient failure. The PV is not reinitialized.
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.ad b
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.HP
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.ad l
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\fB-t\fP|\fB--test\fP
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.br
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Run in test mode. Commands will not update metadata.
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This is implemented by disabling all metadata writing but nevertheless
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returning success to the calling function. This may lead to unusual
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error messages in multi-stage operations if a tool relies on reading
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back metadata it believes has changed but hasn't.
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.ad b
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.HP
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.ad l
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\fB-v\fP|\fB--verbose\fP ...
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.br
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Set verbose level. Repeat from 1 to 4 times to increase the detail
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of messages sent to stdout and stderr.
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.ad b
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.HP
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.ad l
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\fB--version\fP
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.br
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Display version information.
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.ad b
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.HP
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.ad l
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\fB-y\fP|\fB--yes\fP
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.br
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Do not prompt for confirmation interactively but always assume the
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answer yes. Use with extreme caution.
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(For automatic no, see -qq.)
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.ad b
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.HP
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.ad l
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\fB-Z\fP|\fB--zero\fP \fBy\fP|\fBn\fP
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.br
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Controls if the first 4 sectors (2048 bytes) of the device are wiped.
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The default is to wipe these sectors unless either or both of
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--restorefile or --uuid are specified.
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.ad b
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.SH VARIABLES
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.HP
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\fIVG\fP
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.br
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Volume Group name. See \fBlvm\fP(8) for valid names.
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.HP
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\fIPV\fP
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.br
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Physical Volume name, a device path under /dev.
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For commands managing physical extents, a PV positional arg
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generally accepts a suffix indicating a range (or multiple ranges)
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of physical extents (PEs). When the first PE is omitted, it defaults
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to the start of the device, and when the last PE is omitted it defaults to end.
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Start and end range (inclusive): \fIPV\fP[\fB:\fP\fIPE\fP\fB-\fP\fIPE\fP]...
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Start and length range (counting from 0): \fIPV\fP[\fB:\fP\fIPE\fP\fB+\fP\fIPE\fP]...
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.HP
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\fIString\fP
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.br
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See the option description for information about the string content.
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.HP
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\fISize\fP[UNIT]
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.br
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Size is an input number that accepts an optional unit.
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Input units are always treated as base two values, regardless of
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capitalization, e.g. 'k' and 'K' both refer to 1024.
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The default input unit is specified by letter, followed by |UNIT.
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UNIT represents other possible input units: \fBbBsSkKmMgGtTpPeE\fP.
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b|B is bytes, s|S is sectors of 512 bytes, k|K is kilobytes,
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m|M is megabytes, g|G is gigabytes, t|T is terabytes,
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p|P is petabytes, e|E is exabytes.
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(This should not be confused with the output control --units, where
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capital letters mean multiple of 1000.)
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.SH ENVIRONMENT VARIABLES
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See \fBlvm\fP(8) for information about environment variables used by lvm.
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For example, LVM_VG_NAME can generally be substituted for a required VG parameter.
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.SH EXAMPLES
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Add two PVs to a VG.
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.br
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.B vgextend vg00 /dev/sda4 /dev/sdn1
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.SH SEE ALSO
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.BR lvm (8)
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.BR lvm.conf (5)
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.BR lvmconfig (8)
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.BR pvchange (8)
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.BR pvck (8)
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.BR pvcreate (8)
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.BR pvdisplay (8)
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.BR pvmove (8)
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.BR pvremove (8)
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.BR pvresize (8)
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.BR pvs (8)
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.BR pvscan (8)
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.BR vgcfgbackup (8)
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.BR vgcfgrestore (8)
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.BR vgchange (8)
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.BR vgck (8)
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.BR vgcreate (8)
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.BR vgconvert (8)
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.BR vgdisplay (8)
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.BR vgexport (8)
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.BR vgextend (8)
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.BR vgimport (8)
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.BR vgimportclone (8)
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.BR vgmerge (8)
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.BR vgmknodes (8)
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.BR vgreduce (8)
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.BR vgremove (8)
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.BR vgrename (8)
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.BR vgs (8)
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.BR vgscan (8)
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.BR vgsplit (8)
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.BR lvcreate (8)
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.BR lvchange (8)
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.BR lvconvert (8)
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.BR lvdisplay (8)
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.BR lvextend (8)
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.BR lvreduce (8)
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.BR lvremove (8)
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.BR lvrename (8)
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.BR lvresize (8)
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.BR lvs (8)
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.BR lvscan (8)
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.BR lvm2-activation-generator (8)
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.BR blkdeactivate (8)
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.BR lvmdump (8)
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.BR dmeventd (8)
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.BR lvmetad (8)
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.BR lvmpolld (8)
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.BR lvmlockd (8)
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.BR lvmlockctl (8)
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.BR clvmd (8)
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.BR cmirrord (8)
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.BR lvmdbusd (8)
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.BR lvmsystemid (7)
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.BR lvmreport (7)
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.BR lvmraid (7)
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.BR lvmthin (7)
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.BR lvmcache (7)
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