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Imported man pages from LVM1 with some quick LVM2 updates.

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.TH LVCHANGE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvchange \- change attributes of a logical volume
.SH SYNOPSIS
.B lvchange
[\-A/\-\-autobackup y/n] [\-a/\-\-available y/n]
[\-C/\-\-contiguous y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help]
[\-p/\-\-permission r/w] [\-r/\-\-readahead ReadAheadSectors]
[\-v/\-\-verbose] LogicalVolumePath [LogicalVolumePath...]
.SH DESCRIPTION
lvchange allows you to change the attributes of a logical volume.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.TP
.I \-a, \-\-available y/n
Controls the availability of the logical volumes for use.
This is (among others) useful for changing the logical volume's name
( see
.B lvrename(8)
) safely.
.TP
.I \-C, \-\-contiguous y/n
Tries to set or resets the contiguous allocation policy for
logical volumes. It's only possible to change a non-contiguous
logical volume's allocation policy to contiguous, if all of the
allocated physical extents are already contiguous.
.TP
.I \-p, \-\-permission r/w
Change access permission to read-only or read/write.
.TP
.I \-r, \-\-readahead ReadAheadSectors
Change read ahead sector count per logical between 2 and 120.
.SH Examples
"lvchange -x n /dev/vg00/lvol1" prevents the allocation of any physical
extents on logical volume lvol1 in volume group vg00.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8)

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.TH LVCREATE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvcreate \- create a logical volume in an existing volume group
.SH SYNOPSIS
.B lvcreate
[\-A/\-\-autobackup y/n] [\-C/\-\-contiguous y/n] [\-d/\-\-debug]
[\-h/\-?/\-\-help]
[\-i/\-\-stripes Stripes [\-I/\-\-stripesize StripeSize]]
{\-l/\-\-extents LogicalExtentsNumber |
\-L/\-\-size LogicalVolumeSize[kKmMgGtT]}
[\-n/\-\-name LogicalVolumeName]
[\-p/\-\-permission r/rw] [\-r/\-\-readahead ReadAheadSectors]
[\-v/\-\-verbose] [\-Z/\-\-zero y/n]
VolumeGroupName [PhysicalVolumePath...]
.br
.br
.B lvcreate
{\-l/\-\-extents LogicalExtentsNumber |
\-L/\-\-size LogicalVolumeSize[kKmMgGtT]}
[\-c/\-\-chunksize ChunkSize]
\-s/\-\-snapshot \-n/\-\-name SnapshotLogicalVolumeName OriginalLogicalVolumePath
.SH DESCRIPTION
lvcreate creates a new logical volume in a volume group ( see
.B vgcreate(8), vgchange(8)
) by allocating logical extents from the free physical extent pool
of that volume group. If there are not enough free physical extents then
the volume group can be extended ( see
.B vgextend(8)
) with other physical volumes or by reducing existing logical volumes
of this volume group in size ( see
.B lvreduce(8), e2fsadm(8)
).
.br
The second form supports the creation of snapshot logical volumes which
keep the contents of the original logical volume for backup purposes.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
).
.br
Default is yes.
.TP
.I \-c, \-\-chunksize ChunkSize
Power of 2 chunk size for the snapshot logical volume between 4k and 1024k.
.TP
.I \-C, \-\-contiguous y/n
Sets or resets the contiguous allocation policy for
logical volumes. Default is no contiguous allocation based
on a next free principle.
.TP
.I \-i, \-\-stripes Stripes
Gives the number of stripes.
This is equal to the number of physical volumes to scatter
the logical volume.
.TP
.I \-I, \-\-stripesize StripeSize
Gives the number of kilobytes for the granularity of the stripes.
.br
StripeSize must be 2^n (n = 2 to 9)
.TP
.I \-l, \-\-extents LogicalExtentsNumber
Gives the number of logical extents to allocate for the new
logical volume.
.TP
.I \-L, \-\-size LogicalVolumeSize[kKmMgGtT]
Gives the size to allocate for the new logical volume.
A size suffix of K for kilobytes, M for megabytes,
G for gigabytes or T for terabytes is optional.
.br
Default unit is megabytes.
.TP
.I \-n, \-\-name LogicalVolumeName
The name for the new logical volume.
.br
Without this option a default names of "lvol#" will be generated where
# is the LVM internal number of the logical volume.
.TP
.I \-p, \-\-permission r/w
Set access permissions to read only or read and write.
.br
Default is read and write.
.TP
.I \-r, \-\-readahead ReadAheadSectors
Set read ahead sector count of this logical volume to a value between 2 and 120.
.TP
.I \-s, \-\-snapshot
Create a snapshot logical volume (or snapshot) for an existing, so called
original logical volume (or origin).
Snapshots provide a 'frozen image' of the contents of the origin
while the origin can still be updated. They enable consistent
backups and online recovery of removed/overwritten data/files. The snapshot
does not need the same amount of storage the origin has. In a typical scenario,
15-20% might be enough. In case the snapshot runs out of storage, use
.B lvextend(8)
to grow it. Shrinking a snapshot is supported by
.B lvreduce(8)
as well. Run
.B lvdisplay(8)
on the snapshot in order to check how much data is allocated to it.
.TP
.I \-Z, \-\-zero y/n
Controls zeroing of the first KB of data in the new logical volume.
.br
Default is yes.
.br
Warning: trying to mount an unzeroed logical volume can cause the system to
hang.
.SH Examples
"lvcreate -i 3 -I 8 -L 100 vg00" tries to create a striped logical
volume with 3 stripes, a stripesize of 8KB and a size of 100MB in the volume
group named vg00. The logical volume name will be chosen by lvcreate.
"lvcreate --size 100m --snapshot --name snap /dev/vg00/lvol1"
.br
creates a snapshot logical volume named /dev/vg00/snap which has access to the
contents of the original logical volume named /dev/vg00/lvol1
at snapshot logical volume creation time. If the original logical volume
contains a file system, you can mount the snapshot logical volume on an
arbitrary directory in order to access the contents of the filesystem to run
a backup while the original filesystem is updated.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR lvremove (8),
.BR lvrename (8)
.BR lvextend (8),
.BR lvreduce (8),
.BR lvdisplay (8),
.BR lvscan (8)

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.TH LVDISPLAY 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvdisplay \- display attributes of a logical volume
.SH SYNOPSIS
.B lvdisplay
[\-c/\-\-colon] [\-d/\-\-debug] [\-D/\-\-disk] [\-h/\-?/\-\-help]
[\-v[v]/\-\-verbose] LogicalVolumePath [LogicalVolumePath...]
.SH DESCRIPTION
lvdisplay allows you to see the attributes of a logical volume
like size, read/write status, snapshot information etc.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-c, \-\-colon
Generate colon seperated output for easier parsing in scripts or programs.
.nf
The values are:
* logical volume name
* volume group name
* logical volume access
* logical volume status
* internal logical volume number
* open count of logical volume
* logical volume size in kilobytes
* current logical extents associated to logical volume
* allocated logical extents of logical volume
* allocation policy of logical volume
* read ahead sectors of logical volume
* major device number of logical volume
* minor device number of logical volume
.fi
.TP
.I \-D, \-\-disk
Show attributes of the volume group descriptor array on disk(s).
Without this switch they are derived from kernel space.
Useful, if the volume group isn't active.
.TP
.I \-m, \-\-maps
Display the mapping of logical extents to physical volumes and
physical extents.
.SH Examples
"lvdisplay -v /dev/vg00/lvol2" shows attributes of that logical volume
and its mapping of logical to physical extents. In case snapshot
logical volumes have been created for this original logical volume,
this command shows a list of all snapshot logical volumes and their
status (active or inactive) as well.
"lvdisplay /dev/vg00/snapshot" shows the attributes of this snapshot
logical volume and also which original logical volume
it is associated with.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8),
.BR lvscan (8)

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.TH LVEXTEND 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvextend \- extend the size of a logical volume
.SH SYNOPSIS
.B lvextend
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help]
{\-l/\-\-extents [+]LogicalExtentsNumber |
\-L/\-\-size [+]LogicalVolumeSize[kKmMgGtT]}
[\-v/\-\-verbose] LogicalVolumePath [PhysicalVolumePath...]
.SH DESCRIPTION
lvextend allows you to extend the size of a logical volume.
Extension of snapshot logical volumes (see
.B lvcreate(8)
for information to create snapshots) is supprted as well.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.TP
.I \-l, \-\-extents [+]LogicalExtentsNumber
Extend or set the logical volume size in units of logical extents.
With the + sign the value is added to the actual size
of the logical volume and without it, the value is taken as an absolute one.
.TP
.I \-L, \-\-size [+]LogicalVolumeSize[kKmMgGtT]
Extend or set the logical volume size in units in units of megabytes.
A size suffix of M for megabytes, G for gigabytes or T for terabytes is
optional. With the + sign the value is added to the actual size
of the logical volume and without it, the value is taken as an absolute one.
.SH Examples
"lvextend -L +54 /dev/vg01/lvol10 /dev/sdk3" tries to extend the size of
that logical volume by 54MB on physical volume /dev/sdk3.
This is only possible if /dev/sdk3 is a member of volume group vg01 and
there are enough free physical extents in it.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8),
.BR lvreduce (8),
.BR lvchange (8)

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@ -25,6 +25,26 @@ A file containing a simple script with one command per line
can also be given on the command line. The script can also be can also be given on the command line. The script can also be
executed directly if the first line is #! followed by the absolute executed directly if the first line is #! followed by the absolute
path of \fBlvm\fP. path of \fBlvm\fP.
.SH OPTIONS
The following options can be used with every command and are not documented
on individual manual pages.
.TP
\fB-h | --help\fP \(em Display the help text.
.TP
\fB--version\fP \(em Display the version.
Not implemented yet.
.TP
\fB-v | --verbose\fP \(em Set verbose level.
Repeat from 1 to 3 times to determine the detail of messages
sent to stdout and stderr. Overrides config file setting.
.TP
\fB-d | --debug\fP \(em Set debug level.
Repeat from 1 to 6 times to determine the detail of messages sent
to the log file and/or syslog (if configured).
Overrides config file setting.
.TP
\fB--quiet\fP \(em Suppress output and log messages.
Overrides -d and -v.
.SH ENVIRONMENT VARIABLES .SH ENVIRONMENT VARIABLES
.TP .TP
\fBLVM_SYSTEM_DIR\fP \fBLVM_SYSTEM_DIR\fP
@ -45,37 +65,38 @@ Defaults to "yes".
The volume group name that is assumed for The volume group name that is assumed for
any reference to a logical volume that doesn't specify a path. any reference to a logical volume that doesn't specify a path.
Not set by default. Not set by default.
.SH DIAGNOSTICS
All tools return a status code of zero on success or non-zero on failure.
.SH FILES .SH FILES
.I /etc/lvm/lvm.conf .I /etc/lvm/lvm.conf
.br .br
.I $HOME/.lvm_history .I $HOME/.lvm_history
.fi
.SH SEE ALSO .SH SEE ALSO
.BR lvchange (1), .BR lvchange (8),
.BR lvcreate (1), .BR lvcreate (8),
.BR lvdisplay (1), .BR lvdisplay (8),
.BR lvextend (1), .BR lvextend (8),
.BR lvmchange (1), .BR lvmchange (8),
.BR lvreduce (1), .BR lvreduce (8),
.BR lvremove (1), .BR lvremove (8),
.BR lvrename (1), .BR lvrename (8),
.BR lvresize (1), .BR lvresize (8),
.BR lvscan (1), .BR lvscan (8),
.BR pvchange (1), .BR pvchange (8),
.BR pvcreate (1), .BR pvcreate (8),
.BR pvdisplay (1), .BR pvdisplay (8),
.BR pvscan (1), .BR pvscan (8),
.BR vgcfgbackup (1), .BR vgcfgbackup (8),
.BR vgchange (1), .BR vgchange (8),
.BR vgck (1), .BR vgck (8),
.BR vgcreate (1), .BR vgcreate (8),
.BR vgdisplay (1), .BR vgdisplay (8),
.BR vgextend (1), .BR vgextend (8),
.BR vgmerge (1), .BR vgmerge (8),
.BR vgreduce (1), .BR vgreduce (8),
.BR vgremove (1), .BR vgremove (8),
.BR vgrename (1), .BR vgrename (8),
.BR vgscan (1), .BR vgscan (8),
.BR readline (3), .BR readline (3),
.BR lvm.conf (5) .BR lvm.conf (5)

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@ -130,6 +130,5 @@ metadata. Default is 1 (automatic backups enabled). Set to 0 to disable.
.I /etc/lvm/lvm.conf .I /etc/lvm/lvm.conf
.br .br
.I $HOME/.lvm_history .I $HOME/.lvm_history
.fi
.SH SEE ALSO .SH SEE ALSO
.BR lvm(8) .BR lvm (8)

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.TH LVMCHANGE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvmchange \- change attributes of the logical volume manager
.SH SYNOPSIS
.B lvmchange
.SH DESCRIPTION
lvmchange is not currently supported under LVM2
.SH SEE ALSO
.BR dmsetup (8)

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.TH LVREDUCE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvreduce \- reduce the size of a logical volume
.SH SYNOPSIS
.B lvreduce
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-f/\-\-force]
[\-h/\-?/\-\-help] {\-l/\-\-extents [\-]LogicalExtentsNumber |
\-L/\-\-size [\-]LogicalVolumeSize[kKmMgGtT]}
[\-v/\-\-verbose] LogicalVolumePath
.SH DESCRIPTION
lvreduce allows you to reduce the size of a logical volume.
Be careful when reducing a logical volume's size, because data in the
reduced part is lost!!!
.br
You should therefore ensure that the (eg) filesystem on the volume is
resized
.i before
running lvreduce so that the extents that are to be removed are not in use.
If the filesystem is ext2 then you can use the
.B e2fsadm(8)
command to both resize the filesystem and the logical volume together.
.br.
Shrinking snapshot logical volumes (see
.B lvcreate(8)
for information to create snapshots) is supported as well.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.TP
.I \-f, \-\-force
Force size reduction without any question.
.TP
.I \-l, \-\-extents [\-]LogicalExtentsNumber
Reduce or set the logical volume size in units of logical extents.
With the - sign the value will be subtracted from
the logical volume's actual size and without it the will be taken as
an absolute size.
.TP
.I \-L, \-\-size [\-]LogicalVolumeSize[kKmMgGtT]
Reduce or set the logical volume size in units of megabyte by default.
A size suffix of k for kilobyte, m for megabyte, g for gigabyte or
t for terabyte is optional.
With the - sign the value will be subtracted from
the logical volume's actual size and without it the will be taken as
an absolute size.
.SH Example
"lvreduce -l -3 /dev/vg00/lvol1" reduces the size of logical volume lvol1
in volume group vg00 by 3 logical extents.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8),
.BR lvextend (8),
.BR lvchange (8)

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.TH LVREMOVE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvremove \- remove a logical volume
.SH SYNOPSIS
.B lvremove
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-f/\-\-force]
[\-h/\-?/\-\-help] [\-v/\-\-verbose] LogicalVolumePath [LogicalVolumePath...]
.SH DESCRIPTION
lvremove allows you to remove one or more inactive logical volumes.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.TP
.I \-f, \-\-force
Force remove without confirmation.
.SH Example
"lvremove -f /dev/vg00/lvol1" removes that inactive logical volume
unconditionally.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8),
.BR lvdisplay (8),
.BR lvscan (8)

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.TH LVRENAME 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvrename \- rename a logical volume
.SH SYNOPSIS
.B lvrename
.RB [ \-A | \-\-autobackup " {" y | n }]
.RB [ \-d | \-\-debug ]
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-verbose ]
.RB [ \-\-version ]
.TP
.IR "OldLogicalVolumePath NewLogicalVolume" { Path | Name }
.TP
.I VolumeGroupName OldLogicalVolumeName NewLogicalVolumeName
.SH DESCRIPTION
.B lvrename
renames an existing logical volume from
.IR OldLogicalVolume { Name | Path }
to
.IR NewLogicalVolume { Name | Path }.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-A ", " \-\-autobackup " {" y | n }
Controls automatic backup of VG metadata after the change (see
.BR vgcfgbackup (8)).
Default is yes.
.SH EXAMPLE
To rename
.B lvold
in volume group
.B vg02
to
.BR lvnew :
.nf
\ lvrename /dev/vg02/lvold /dev/vg02/lvnew
.fi
An alternate syntax to rename this logical volume is
.nf
\ lvrename vg02 lvold lvnew
.fi
.SH SEE ALSO
.BR lvm (8),
.BR lvchange (8),
.BR vgcreate (8),
.BR vgrename (8)

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.TH LVSCAN 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
lvscan \- scan (all disks) for logical volumes
.SH SYNOPSIS
.B lvscan
.RB [ \-b | \-\-blockdevice ]
.RB [ \-d | \-\-debug ]
.RB [ \-D | \-\-disk ]
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-verbose ]
.SH DESCRIPTION
.B lvscan
scans all known volume groups or all supported LVM block devices
in the system for defined logical volumes.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-b ", " \-\-blockdevice
Adds the device major and minor numbers to the display
of each logical volume.
.TP
.BR \-D ", " \-\-disk
Scan for logical volumes on disk(s) instead of getting the information
from the kernel.
.SH SEE ALSO
.BR lvm (8),
.BR lvcreate (8),
.BR lvdisplay (8)

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.TH PVCHANGE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
pvchange \- change attributes of a physical volume
.SH SYNOPSIS
.B pvchange
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help]
[\-v/\-\-verbose] [\-a/\-\-all] [\-x/\-\-allocation y/n] [PhysicalVolumePath...]
.SH DESCRIPTION
pvchange allows you to change the allocation permissions of one or
more physical volumes.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.TP
.I \-a, \-\-all
If PhysicalVolumePath is not specified on the command line all
physical volumes are searched for and used.
.TP
.I \-x, \-\-allocation y/n
Enable or disable allocation of physical extents on this physical volume.
.SH Example
"pvchange -x n /dev/sdk1" disallows the allocation of physical extents
on this physical volume (possibly because of disk errors, or because it will
be removed after freeing it.
.SH SEE ALSO
.BR lvm (8),
.BR pvcreate (8)

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.TH PVCREATE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
pvcreate \- initialize a disk or partition for use by LVM
.SH SYNOPSIS
.B pvcreate
.RB [ \-d | \-\-debug ]
.RB [ \-f [ f ]| \-\-force " [" \-\-force ]]
.RB [ \-y | \-\-yes ]
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-verbose ]
.RB [ \-V | \-\-version ]
.IR PhysicalVolume " [" PhysicalVolume ...]
.SH DESCRIPTION
.B pvcreate
initializes
.I PhysicalVolume
for later use by the Logical Volume Manager (LVM). Each
.I PhysicalVolume
can be a disk partition, whole disk, meta device, or loopback file.
For DOS disk partitions, the partition id must be set to 0x8e using
.BR fdisk "(8), " cfdisk "(8), "
or a equivalent. For
.B whole disk devices only
the partition table must be erased, which will effectively destroy all
data on that disk. This can be done by zeroing the first sector with:
.sp
.BI "dd if=/dev/zero of=" PhysicalVolume " bs=512 count=1"
.sp
Continue with
.BR vgcreate (8)
to create a new volume group on
.IR PhysicalVolume ,
or
.BR vgextend (8)
to add
.I PhysicalVolume
to an existing volume group.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-f ", " \-\-force
Force the creation without any confirmation. You can not recreate
(reinitialize) a physical volume belonging to an existing volume group.
In an emergency you can override this behaviour with -ff. In no case
case can you initialize an active physical volume with this command.
.TP
.BR \-y ", " \-\-yes
Answer yes to all questions.
.SH Example
Initialize partition #4 on the third SCSI disk and the entire fifth
SCSI disk for later use by LVM:
.sp
.B pvcreate /dev/sdc4 /dev/sde
.sp
.SH SEE ALSO
.BR lvm "(8), " vgcreate "(8), " vgextend "(8), " lvcreate "(8), "
.BR cfdisk "(8), " fdisk "(8), " losetup "(8), " mdadd "(8)"

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.TH PVDISPLAY 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
pvdisplay \- display attributes of a physical volume
.SH SYNOPSIS
.B pvdisplay
[\-c/\-\-colon] [\-d/\-\-debug] [\-h/\-?/\-\-help] [\-s/\-\-short]
[\-v[v]/\-\-verbose [\-\-verbose]]
PhysicalVolumePath [PhysicalVolumePath...]
.SH DESCRIPTION
pvdisplay allows you to see the attributes of one or more physical volumes
like size, physical extent size, space used for the volume group descriptor
area and so on.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-c, \-\-colon
Generate colon seperated output for easier parsing in scripts or programs.
.nf
The values are:
* physical volume device name
* volume group name
* physical volume size in kilobytes
* internal physical volume number
* physical volume status
* physical volume (not) allocatable
* current number of logical volumes on this physical volume
* physical extent size in kilobytes
* total number of physical extents
* free number of physical extents
* allocated number of physical extents
.fi
.TP
.I \-s, \-\-short
Only display the size of the given physical volumes.
.TP
.I \-m, \-\-maps
Display the mapping of physical extents to logical volumes and
logical extents.
.SH SEE ALSO
.BR lvm (8),
.BR pvcreate (8),
.BR lvcreate (8),
.BR vgcreate (8)

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.TH PVSCAN 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
pvscan \- scan all disks for physical volumes
.SH SYNOPSIS
.B pvscan
.RB [ \-d | \-\-debug]
.RB [\-e | \-\-exported]
.RB [\-h | \-\-help]
.RB [ \-n | \-\-novolumegroup]
.RB [\-s | \-\-short]
.RB [\-u | \-\-uuid]
.RB [ \-v [ v ]| \-\-verbose " [" \-\-verbose ]]
.SH DESCRIPTION
.B pvscan
scans all supported LVM block devices in the system for physical volumes.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-e ", " \-\-exported
Only show physical volumes belonging to exported volume groups.
.TP
.BR \-n ", " \-\-novolumegroup
Only show physical volumes not belonging to any volume group.
.TP
.BR \-s ", " \-\-short
Short listing format.
.TP
.BR \-u ", " \-\-uuid
Show UUIDs (Unifrom Unique Identifiers) in addition to device special names.
.SH SEE ALSO
.BR lvm (8),
.BR pvcreate (8),
.BR pvdisplay (8)

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.TH VGCFGBACKUP 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgcfgbackup \- backup volume group descriptor area
.SH SYNOPSIS
.B vgcfgbackup
.RB [ \-d | \-\-debug ]
.RB [ \-h | \-\-help ]
.RB [ \-v | \-\-verbose ]
.RI [ VolumeGroupName ...]
.SH DESCRIPTION
.B vgcfgbackup
allows you to backup the metadata
of one to all volume groups to files in
.IR /etc/lvm .
If you don't give any volume groups in the command line, all of them
will be backed up. This DOESN'T backup user/system data in logical
volume(s)!
.SH OPTIONS
See \fBlvm\fP for common options.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8)

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.TH VGCHANGE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgchange \- change attributes of a volume group
.SH SYNOPSIS
.B vgchange
.RB [ \-A | \-\-autobackup " {" y | n }]
.RB [\-a | \-\-available " {" y | n }]
.RB [\-d | \-\-debug]
.RB [ \-h | \-\-help]
.RB [\-l | \-\-logicalvolume
.IR MaxLogicalVolumes ]
.RB [ \-v | \-\-verbose ]
.RB [ \-\-version ]
.RB [\-x | \-\-allocation " {" y | n }]
.RI [ VolumeGroupName ...]
.SH DESCRIPTION
.B vgchange
allows you to change the attributes of one or more volume groups.
Its main purpose is to activate and deactivate
.IR VolumeGroupName ,
or all volume groups if none is specified. Only active volume groups
are subject to changes and allow access to their logical volumes.
During volume group activation, if
.B vgchange
recognizes snapshot logical volumes which were dropped because they ran
out of space, it displays a message informing the administrator that such
snapshots should be removed (see
.BR lvremove (8)).
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-A ", " \-\-autobackup { y | n }
Controls automatic backup of metadata after the change. See
.B vgcfgbackup (8).
Default is yes.
.TP
.BR \-a ", " \-\-available { y | n }
Controls the availability of the volume group for input/output.
In other words: makes a volume group known/unknown to the kernel.
.TP
.BR \-l ", " \-\-logicalvolume " " \fIMaxLogicalVolumes\fR
Changes the maximum logical volume number of an existing inactive
volume group.
.TP
.BR \-x ", " \-\-allocation { y | n }
Enables or disables the extension/reduction of this volume group
with/by physical volumes.
.SH EXAMPLES
To activate all known volume groups in the system:
.nf
\ vgchange -a y
.fi
To change the maximum number of logical volumes of inactive volume group
.B vg00
to 128.
.nf
\ vgchange -l 128 /dev/vg00
.fi
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8)

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.TH VGCK 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgck \- check volume group metadata
.SH SYNOPSIS
.B vgck
[\-d/\-\-debug] [\-h/\-?/\-\-help] [\-v/\-\-verbose] [VolumeGroupName...]
.SH DESCRIPTION
vgck checks LVM metadata for each named volume group for consistency.
.SH OPTIONS
See \fBlvm\fP for common options.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR vgchange (8),
.BR vgscan (8)

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.TH VGCREATE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgcreate \- create a volume group
.SH SYNOPSIS
.B vgcreate
.RB [ \-A | \-\-autobackup " {" y | n }]
.RB [ \-d | \-\-debug ]
.RB [ \-h | \-\-help ]
.RB [ \-l | \-\-maxlogicalvolumes
.IR MaxLogicalVolumes ]
.RB [ -p | \-\-maxphysicalvolumes
.IR MaxPhysicalVolumes ]
.RB [ \-s | \-\-physicalextentsize
.IR PhysicalExtentSize [ \fBkKmMgGtT\fR ]]
.RB [ \-v | \-\-verbose ]
.RB [ \-\-version ]
.I VolumeGroupName PhysicalVolumePath
.RI [ PhysicalVolumePath ...]
.SH DESCRIPTION
.B vgcreate
creates a new volume group called
.I VolumeGroupName
using the block special device
.IR PhysicalVolumePath
previously configured for LVM with
.BR pvcreate (8).
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-A ", " \-\-autobackup " {" y | n }
Controls automatic backup of VG metadata after the change (see
.BR vgcfgbackup (8)).
Default is yes.
.TP
.BR \-l ", " \-\-maxlogicalvolumes " " \fIMaxLogicalVolumes\fR
Sets the maximum possible logical volume count.
More logical volumes can't be created in this volume group.
Absolute maximum is 256.
.TP
.BR \-p ", " \-\-maxphysicalvolumes " " \fIMaxPhysicalVolumes\fR
Sets the maximum possible physical volume count.
More physical volumes can't be included in this volume group.
Absolute maximum is 256.
.TP
.BR \-s ", " \-\-physicalextentsize " " \fIPhysicalExtentSize\fR[\fBkKmMgGtT\fR]
Sets the physical extent size on physical volumes of this volume group.
A size suffix (k for kilobytes up to t for terabytes) is optional, megabytes
is the default if no suffix is present. Values can be from 8 KB to 16 GB in
powers of 2. The default of 4 MB causes maximum LV sizes of ~256GB because as
many as ~64k extents are supported per LV. In case larger maximum LV sizes are
needed (later), you need to set the PE size to a larger value as well. Later
changes of the PE size in an existing VG are not supported.
.SH EXAMPLES
To create a volume group named
.B test_vg
using physical volumes
.BR /dev/hdk1 ", " /dev/hdl1 ", and " /dev/hdm1
with default physical extent size of 4MB:
.nf
\ vgcreate test_vg /dev/sd[k-m]1
.fi
To limit kernel memory usage, there is a limit of 65536 physical extents
(PE) per logical volume, so the PE size determines the maximum logical volume
size. The default PE size of 4MB limits a single logical volume to 256GB (see
the -s option to raise that limit).
There is also (as of Linux 2.4) a kernel limitation of 2TB per block device.
.SH SEE ALSO
.BR lvm (8),
.BR pvdisplay (8),
.BR pvcreate (8),
.BR vgdisplay (8),
.BR vgextend (8),
.BR vgreduce (8),
.BR lvcreate (8),
.BR lvdisplay (8),
.BR lvextend (8),
.BR lvreduce (8)

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.TH VGDISPLAY 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgdisplay \- display attributes of volume groups
.SH SYNOPSIS
.B vgdisplay
.RB [ \-A | \-\-activevolumegroups ]
.RB [ \-c | \-\-colon ]
.RB [ \-d | \-\-debug ]
.RB [ \-D | \-\-disk ]
.RB [ \-h | \-\-help ]
.RB [ \-s | \-\-short ]
.RB [ \-v [ v ]| \-\-verbose " [" \-\-verbose ]]
.RB [ \-\-version ]
.RI [ VolumeGroupName ...]
.SH DESCRIPTION
.B vgdisplay
allows you to see the attributes of
.I VolumeGroupName
(or all volume groups if none is given) with it's physical and logical
volumes and their sizes etc.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.BR \-A ", " \-\-activevolumegroups
Only select the active volume groups.
.TP
.BR \-c ", " \-\-colon
Generate colon seperated output for easier parsing in scripts or programs.
.nf
The values are:
1 volume group name
2 volume group access
3 volume group status
4 internal volume group number
5 maximum number of logical volumes
6 current number of logical volumes
7 open count of all logical volumes in this volume group
8 maximum logical volume size
9 maximum number of physical volumes
10 current number of physical volumes
11 actual number of physical volumes
12 size of volume group in kilobytes
13 physical extent size
14 total number of physical extents for this volume group
15 allocated number of physical extents for this volume group
16 free number of physical extents for this volume group
17 uuid of volume group
.fi
.TP
.BR \-D ", " \-\-disk
Show attributes from the volume group descriptor area on disk(s).
Without this switch they are shown from the kernel.
Useful if the volume group isn't activated.
.TP
.BR \-s ", " \-\-short
Give a short listing showing the existence of volume groups.
.TP
.BR \-v ", " \-\-verbose
Display verbose information containing long listings of physical
and logical volumes. If given twice, also display verbose runtime
information of vgdisplay's activities.
.TP
.BR \-\-version
Display version and exit successfully.
.SH SEE ALSO
.BR lvm (8),
.BR pvcreate (8),
.BR vgcreate (8),
.BR lvcreate (8)

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.TH VGEXTEND 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgextend \- add physical volumes to a volume group
.SH SYNOPSIS
.B vgextend
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help] [\-v/\-\-verbose]
VolumeGroupName PhysicalDevicePath [PhysicalDevicePath...]
.SH DESCRIPTION
vgextend allows you to add one or more initialized physical volumes ( see
.B pvcreate(8)
) to an existing volume group to extend it in size.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.SH Examples
"vgextend vg00 /dev/sda4 /dev/sdn1" tries to extend the existing volume
group "vg00" by the new physical volumes (see
.B pvcreate(8)
) "/dev/sdn1" and /dev/sda4".
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR vgreduce (8),
.BR pvcreate (8)

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.TH VGMERGE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgmerge \- merge two volume groups
.SH SYNOPSIS
.B vgmerge
[\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help] [\-l/\-\-list]
[\-t/\-\-test] [\-v/\-\-verbose] DestinationVolumeGroupName
SourceVolumeGroupName
.SH DESCRIPTION
vgmerge merges two existing volume groups. The inactive SourceVolumeGroupName
will be merged into the DestinationVolumeGroupName if physical extent sizes
are equal and physical and logical volume summaries of both volume groups
fit into DestinationVolumeGroupName's limits.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the merge ( see
.B vgcfgbackup(8)
). Default is yes.
.I \-l, \-\-list
Display merged DestinationVolumeGroupName like "vgdisplay -v".
.TP
.I \-t, \-\-test
Do a test run WITHOUT making any real changes.
.SH Examples
"vgmerge -v databases my_vg" merges the inactive volume group named "my_vg"
into the active or inactive volume group named "databases" giving verbose
runtime information.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR vgextend (8),
.BR vgreduce (8)

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.TH VGREDUCE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgreduce \- reduce a volume group
.SH SYNOPSIS
.B vgreduce
[\-a/\-\-all] [\-A/\-\-autobackup y/n] [\-d/\-\-debug] [\-h/\-?/\-\-help]
[\-v/\-\-verbose] VolumeGroupName
[PhysicalVolumePath...]
.SH DESCRIPTION
vgreduce allows you to remove one or more unused physical volumes
from a volume group.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-a, \-\-all
Removes all empty physical volumes if none are given on command line.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.SH SEE ALSO
.BR lvm (8),
.BR vgextend (8)

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.TH VGREMOVE 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgremove \- remove a volume group
.SH SYNOPSIS
.B vgremove
[\-d/\-\-debug] [\-h/\-?/\-\-help] [\-v/\-\-verbose]
VolumeGroupName [VolumeGroupName...]
.SH DESCRIPTION
vgremove allows you to remove one or more volume groups.
The volume group(s) must not have any logical volumes allocated
and must also be inactive (see
.B vgchange(8)
).
.SH OPTIONS
See \fBlvm\fP for common options.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR vgreduce (8)

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.TH VGRENAME 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgrename \- rename a volume group
.SH SYNOPSIS
.B vgrename
[\-A/\-\-autobackup y/n]
[\-d/\-\-debug]
[\-h/\-?/\-\-help]
[\-v/\-\-verbose]
OldVolumeGroupPath/\-Name NewVolumeGroupPath/\-Name
.SH DESCRIPTION
vgrename renames an existing (see
.B vgcreate(8)
) volume group.
.SH OPTIONS
See \fBlvm\fP for common options.
.TP
.I \-A, \-\-autobackup y/n
Controls automatic backup of VG metadata after the change ( see
.B vgcfgbackup(8)
). Default is yes.
.SH Examples
"vgrename /dev/vg02 /dev/my_volume_group" renames existing
volume group "vg02" to "my_volume_group".
.TP
"vgrename vg02 my_volume_group" does the same.
.SH SEE ALSO
.BR lvm (8),
.BR vgchange (8),
.BR vgcreate (8),
.BR lvrename (8)

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.TH VGSCAN 8 "LVM TOOLS" "Sistina Software UK" \" -*- nroff -*-
.SH NAME
vgscan \- scan all disks for volume groups and rebuild caches
.SH SYNOPSIS
.B vgscan
[\-d/\-\-debug] [\-h/\-?/\-\-help] [\-v/\-\-verbose]
.SH DESCRIPTION
vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch
of other disk devices in the system looking for LVM physical volumes
and volume groups. Define a filter in \fBlvm.conf\fP(8) to restrict
the scan to avoid a CD ROM, for example.
.LP
In LVM2, vgscans take place automatically; but you might still need to
run one explicitly after changing hardware or filters.
.SH OPTIONS
See \fBlvm\fP for common options.
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),
.BR vgchange (8)