.TH VGCONVERT 8 "LVM TOOLS #VERSION#" "Red Hat, Inc."
.SH NAME
vgconvert - Change volume group metadata format
.
.SH SYNOPSIS
\fBvgconvert\fP \fIposition_args\fP
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    [ \fIoption_args\fP ]
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.SH DESCRIPTION
vgconvert converts VG metadata from one format to another.  This command
is no longer used because this version of lvm no longer supports the LVM1
format.
.SH USAGE
\fBvgconvert\fP \fIVG\fP ...
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.RS 4
.ad l
[ \fB-f\fP|\fB--force\fP ]
.ad b
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.ad l
[ \fB-M\fP|\fB--metadatatype\fP \fBlvm2\fP ]
.ad b
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[    \fB--labelsector\fP \fINumber\fP ]
.ad b
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[    \fB--bootloaderareasize\fP \fISize\fP[m|UNIT] ]
.ad b
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[    \fB--pvmetadatacopies\fP \fB0\fP|\fB1\fP|\fB2\fP ]
.ad b
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.ad l
[    \fB--metadatasize\fP \fISize\fP[m|UNIT] ]
.ad b
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[    \fB--reportformat\fP \fBbasic\fP|\fBjson\fP ]
.ad b
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[ COMMON_OPTIONS ]
.RE
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Common options for lvm:
.
.RS 4
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[ \fB-d\fP|\fB--debug\fP ]
.ad b
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[ \fB-h\fP|\fB--help\fP ]
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[ \fB-q\fP|\fB--quiet\fP ]
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[ \fB-t\fP|\fB--test\fP ]
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[ \fB-v\fP|\fB--verbose\fP ]
.ad b
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[ \fB-y\fP|\fB--yes\fP ]
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[    \fB--commandprofile\fP \fIString\fP ]
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[    \fB--config\fP \fIString\fP ]
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[    \fB--driverloaded\fP \fBy\fP|\fBn\fP ]
.ad b
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[    \fB--lockopt\fP \fIString\fP ]
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[    \fB--longhelp\fP ]
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[    \fB--profile\fP \fIString\fP ]
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[    \fB--version\fP ]
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.RE
.SH OPTIONS
.HP
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\fB--bootloaderareasize\fP \fISize\fP[m|UNIT]
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Create a separate bootloader area of specified size besides PV's data
area. The bootloader area is an area of reserved space on the PV from
which LVM will not allocate any extents and it's kept untouched. This is
primarily aimed for use with bootloaders to embed their own data or metadata.
The start of the bootloader area is always aligned, see also --dataalignment
and --dataalignmentoffset. The bootloader area size may eventually
end up increased due to the alignment, but it's never less than the
size that is requested. To see the bootloader area start and size of
an existing PV use pvs -o +pv_ba_start,pv_ba_size.
.ad b
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\fB--commandprofile\fP \fIString\fP
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The command profile to use for command configuration.
See \fBlvm.conf\fP(5) for more information about profiles.
.ad b
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\fB--config\fP \fIString\fP
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Config settings for the command. These override lvm.conf settings.
The String arg uses the same format as lvm.conf,
or may use section/field syntax.
See \fBlvm.conf\fP(5) for more information about config.
.ad b
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\fB-d\fP|\fB--debug\fP ...
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Set debug level. Repeat from 1 to 6 times to increase the detail of
messages sent to the log file and/or syslog (if configured).
.ad b
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\fB--driverloaded\fP \fBy\fP|\fBn\fP
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If set to no, the command will not attempt to use device-mapper.
For testing and debugging.
.ad b
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\fB-f\fP|\fB--force\fP ...
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Override various checks, confirmations and protections.
Use with extreme caution.
.ad b
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\fB-h\fP|\fB--help\fP
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Display help text.
.ad b
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\fB--labelsector\fP \fINumber\fP
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By default the PV is labelled with an LVM2 identifier in its second
sector (sector 1). This lets you use a different sector near the
start of the disk (between 0 and 3 inclusive - see LABEL_SCAN_SECTORS
in the source). Use with care.
.ad b
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\fB--lockopt\fP \fIString\fP
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Used to pass options for special cases to lvmlockd.
See \fBlvmlockd\fP(8) for more information.
.ad b
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\fB--longhelp\fP
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Display long help text.
.ad b
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\fB--metadatasize\fP \fISize\fP[m|UNIT]
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The approximate amount of space used for each VG metadata area.
The size may be rounded.
.ad b
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\fB-M\fP|\fB--metadatatype\fP \fBlvm2\fP
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Specifies the type of on-disk metadata to use.
\fBlvm2\fP (or just \fB2\fP) is the current, standard format.
\fBlvm1\fP (or just \fB1\fP) is no longer used.
.ad b
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\fB--profile\fP \fIString\fP
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An alias for --commandprofile or --metadataprofile, depending
on the command.
.ad b
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\fB--pvmetadatacopies\fP \fB0\fP|\fB1\fP|\fB2\fP
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The number of metadata areas to set aside on a PV for storing VG metadata.
When 2, one copy of the VG metadata is stored at the front of the PV
and a second copy is stored at the end.
When 1, one copy of the VG metadata is stored at the front of the PV
(starting in the 5th sector).
When 0, no copies of the VG metadata are stored on the given PV.
This may be useful in VGs containing many PVs (this places limitations
on the ability to use vgsplit later.)
.ad b
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\fB-q\fP|\fB--quiet\fP ...
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Suppress output and log messages. Overrides --debug and --verbose.
Repeat once to also suppress any prompts with answer 'no'.
.ad b
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\fB--reportformat\fP \fBbasic\fP|\fBjson\fP
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Overrides current output format for reports which is defined globally by
the report/output_format setting in lvm.conf.
\fBbasic\fP is the original format with columns and rows.
If there is more than one report per command, each report is prefixed
with the report name for identification. \fBjson\fP produces report
output in JSON format. See \fBlvmreport\fP(7) for more information.
.ad b
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\fB-t\fP|\fB--test\fP
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Run in test mode. Commands will not update metadata.
This is implemented by disabling all metadata writing but nevertheless
returning success to the calling function. This may lead to unusual
error messages in multi-stage operations if a tool relies on reading
back metadata it believes has changed but hasn't.
.ad b
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\fB-v\fP|\fB--verbose\fP ...
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Set verbose level. Repeat from 1 to 4 times to increase the detail
of messages sent to stdout and stderr.
.ad b
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\fB--version\fP
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Display version information.
.ad b
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\fB-y\fP|\fB--yes\fP
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Do not prompt for confirmation interactively but always assume the
answer yes. Use with extreme caution.
(For automatic no, see -qq.)
.ad b
.SH VARIABLES
.HP
\fIVG\fP
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Volume Group name.  See \fBlvm\fP(8) for valid names.
.HP
\fIString\fP
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See the option description for information about the string content.
.HP
\fISize\fP[UNIT]
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Size is an input number that accepts an optional unit.
Input units are always treated as base two values, regardless of
capitalization, e.g. 'k' and 'K' both refer to 1024.
The default input unit is specified by letter, followed by |UNIT.
UNIT represents other possible input units: \fBbBsSkKmMgGtTpPeE\fP.
b|B is bytes, s|S is sectors of 512 bytes, k|K is kilobytes,
m|M is megabytes, g|G is gigabytes, t|T is terabytes,
p|P is petabytes, e|E is exabytes.
(This should not be confused with the output control --units, where
capital letters mean multiple of 1000.)
.SH ENVIRONMENT VARIABLES
See \fBlvm\fP(8) for information about environment variables used by lvm.
For example, LVM_VG_NAME can generally be substituted for a required VG parameter.
.SH SEE ALSO

.BR lvm (8)
.BR lvm.conf (5)
.BR lvmconfig (8)

.BR pvchange (8)
.BR pvck (8)
.BR pvcreate (8)
.BR pvdisplay (8)
.BR pvmove (8)
.BR pvremove (8)
.BR pvresize (8)
.BR pvs (8)
.BR pvscan (8) 

.BR vgcfgbackup (8)
.BR vgcfgrestore (8)
.BR vgchange (8)
.BR vgck (8)
.BR vgcreate (8)
.BR vgconvert (8)
.BR vgdisplay (8)
.BR vgexport (8)
.BR vgextend (8)
.BR vgimport (8)
.BR vgimportclone (8)
.BR vgmerge (8)
.BR vgmknodes (8)
.BR vgreduce (8)
.BR vgremove (8)
.BR vgrename (8)
.BR vgs (8)
.BR vgscan (8)
.BR vgsplit (8) 

.BR lvcreate (8)
.BR lvchange (8)
.BR lvconvert (8)
.BR lvdisplay (8)
.BR lvextend (8)
.BR lvreduce (8)
.BR lvremove (8)
.BR lvrename (8)
.BR lvresize (8)
.BR lvs (8)
.BR lvscan (8)

.BR lvm-fullreport (8)
.BR lvm-lvpoll (8)
.BR lvm2-activation-generator (8)
.BR blkdeactivate (8)
.BR lvmdump (8)

.BR dmeventd (8)
.BR lvmetad (8)
.BR lvmpolld (8)
.BR lvmlockd (8)
.BR lvmlockctl (8)
.BR clvmd (8)
.BR cmirrord (8)
.BR lvmdbusd (8)

.BR lvmsystemid (7)
.BR lvmreport (7)
.BR lvmraid (7)
.BR lvmthin (7)
.BR lvmcache (7)
