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NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | EXAMPLES | SEE ALSO | COLOPHON |
VGCREATE(8) System Manager's Manual VGCREATE(8)
vgcreate - Create a volume group
vgcreate position_args
[ option_args ]
vgcreate creates a new VG on block devices. If the devices were not
previously intialized as PVs with pvcreate(8), vgcreate will
inititialize them, making them PVs. The pvcreate options for
initializing devices are also available with vgcreate.
vgcreate VG_new PV ...
[ -A|--autobackup y|n ]
[ -c|--clustered y|n ]
[ -l|--maxlogicalvolumes Number ]
[ -p|--maxphysicalvolumes Number ]
[ -M|--metadatatype lvm2|lvm1 ]
[ -s|--physicalextentsize Size[m|UNIT] ]
[ -f|--force ]
[ -Z|--zero y|n ]
[ --addtag Tag ]
[ --alloc
contiguous|cling|cling_by_tags|normal|anywhere|inherit ]
[ --metadataprofile String ]
[ --labelsector Number ]
[ --metadatasize Size[m|UNIT] ]
[ --pvmetadatacopies 0|1|2 ]
[ --[vg]metadatacopies all|unmanaged|Number ]
[ --reportformat basic|json ]
[ --dataalignment Size[k|UNIT] ]
[ --dataalignmentoffset Size[k|UNIT] ]
[ --shared ]
[ --systemid String ]
[ --locktype sanlock|dlm|none ]
[ --lockopt String ]
[ COMMON_OPTIONS ]
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofile String ]
[ --config String ]
[ --driverloaded y|n ]
[ --longhelp ]
[ --profile String ]
[ --version ]
--addtag Tag
Adds a tag to a PV, VG or LV. This option can be repeated to
add multiple tags at once. See lvm(8) for information about
tags.
--alloc contiguous|cling|cling_by_tags|normal|anywhere|inherit
Determines the allocation policy when a command needs to
allocate Physical Extents (PEs) from the VG. Each VG and LV
has an allocation policy which can be changed with
vgchange/lvchange, or overriden on the command line. normal
applies common sense rules such as not placing parallel
stripes on the same PV. inherit applies the VG policy to an
LV. contiguous requires new PEs be placed adjacent to
existing PEs. cling places new PEs on the same PV as existing
PEs in the same stripe of the LV. If there are sufficient PEs
for an allocation, but normal does not use them, anywhere will
use them even if it reduces performance, e.g. by placing two
stripes on the same PV. Optional positional PV args on the
command line can also be used to limit which PVs the command
will use for allocation. See lvm(8) for more information
about allocation.
-A|--autobackup y|n
Specifies if metadata should be backed up automatically after
a change. Enabling this is strongly advised! See
vgcfgbackup(8) for more information.
-c|--clustered y|n
Create a clustered VG using clvmd if LVM is compiled with
cluster support. This allows multiple hosts to share a VG on
shared devices. clvmd and a lock manager must be configured
and running. (A clustered VG using clvmd is different from a
shared VG using lvmlockd.) See clvmd(8) for more information
about clustered VGs.
--commandprofile String
The command profile to use for command configuration. See
lvm.conf(5) for more information about profiles.
--config String
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 lvm.conf(5) for more
information about config.
--dataalignment Size[k|UNIT]
Align the start of the data to a multiple of this number.
Also specify an appropriate Physical Extent size when creating
a VG. To see the location of the first Physical Extent of an
existing PV, use pvs -o +pe_start. In addition, it may be
shifted by an alignment offset. See
lvm.conf/data_alignment_offset_detection and
--dataalignmentoffset.
--dataalignmentoffset Size[k|UNIT]
Shift the start of the data area by this additional offset.
-d|--debug ...
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).
--driverloaded y|n
If set to no, the command will not attempt to use device-
mapper. For testing and debugging.
-f|--force ...
Override various checks, confirmations and protections. Use
with extreme caution.
-h|--help
Display help text.
--labelsector Number
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.
--lockopt String
Used to pass options for special cases to lvmlockd. See
lvmlockd(8) for more information.
--locktype sanlock|dlm|none
Specify the VG lock type directly in place of using --shared.
See lvmlockd(8) for more information.
--longhelp
Display long help text.
-l|--maxlogicalvolumes Number
Sets the maximum number of LVs allowed in a VG.
-p|--maxphysicalvolumes Number
Sets the maximum number of PVs that can belong to the VG. The
value 0 removes any limitation. For large numbers of PVs,
also see options --pvmetadatacopies, and --vgmetadatacopies
for improving performance.
--metadataprofile String
The metadata profile to use for command configuration. See
lvm.conf(5) for more information about profiles.
--metadatasize Size[m|UNIT]
The approximate amount of space used for each VG metadata
area. The size may be rounded.
-M|--metadatatype lvm2|lvm1
Specifies the type of on-disk metadata to use. lvm2 (or just
2) is the current, standard format. lvm1 (or just 1) is a
historical format that can be used for accessing old data.
-s|--physicalextentsize Size[m|UNIT]
Sets the physical extent size of PVs in the VG. The value
must be either a power of 2 of at least 1 sector (where the
sector size is the largest sector size of the PVs currently
used in the VG), or at least 128KiB. Once this value has been
set, it is difficult to change without recreating the VG,
unless no extents need moving.
--profile String
An alias for --commandprofile or --metadataprofile, depending
on the command.
--pvmetadatacopies 0|1|2
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.)
-q|--quiet ...
Suppress output and log messages. Overrides --debug and
--verbose. Repeat once to also suppress any prompts with
answer 'no'.
--reportformat basic|json
Overrides current output format for reports which is defined
globally by the report/output_format setting in lvm.conf.
basic 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. json produces report
output in JSON format. See lvmreport(7) for more information.
--shared
Create a shared VG using lvmlockd if LVM is compiled with
lockd support. lvmlockd will select lock type sanlock or dlm
depending on which lock manager is running. This allows
multiple hosts to share a VG on shared devices. lvmlockd and a
lock manager must be configured and running. (A shared VG
using lvmlockd is different from a clustered VG using clvmd.)
See lvmlockd(8) for more information about shared VGs.
--systemid String
Specifies the system ID that will be given to the new VG,
overriding the system ID of the host running the command. A VG
is normally created without this option, in which case the new
VG is given the system ID of the host creating it. Using this
option requires caution because the system ID of the new VG
may not match the system ID of the host running the command,
leaving the VG inaccessible to the host. See lvmsystemid(7)
for more information.
-t|--test
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.
-v|--verbose ...
Set verbose level. Repeat from 1 to 4 times to increase the
detail of messages sent to stdout and stderr.
--version
Display version information.
--[vg]metadatacopies all|unmanaged|Number
Number of copies of the VG metadata that are kept. VG
metadata is kept in VG metadata areas on PVs in the VG, i.e.
reserved space at the start and/or end of the PVs. Keeping a
copy of the VG metadata on every PV can reduce performance in
VGs containing a large number of PVs. When this number is set
to a non-zero value, LVM will automatically choose PVs on
which to store metadata, using the metadataignore flags on PVs
to achieve the specified number. The number can also be
replaced with special string values: unmanaged causes LVM to
not automatically manage the PV metadataignore flags. all
causes LVM to first clear the metadataignore flags on all PVs,
and then to become unmanaged.
-y|--yes
Do not prompt for confirmation interactively but always assume
the answer yes. Use with extreme caution. (For automatic no,
see -qq.)
-Z|--zero y|n
Controls if the first 4 sectors (2048 bytes) of the device are
wiped. The default is to wipe these sectors unless either or
both of --restorefile or --uuid are specified.
VG
Volume Group name. See lvm(8) for valid names.
PV
Physical Volume name, a device path under /dev. For commands
managing physical extents, a PV positional arg generally
accepts a suffix indicating a range (or multiple ranges) of
physical extents (PEs). When the first PE is omitted, it
defaults to the start of the device, and when the last PE is
omitted it defaults to end. Start and end range (inclusive):
PV[:PE-PE]... Start and length range (counting from 0):
PV[:PE+PE]...
String
See the option description for information about the string
content.
Size[UNIT]
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: bBsSkKmMgGtTpPeE.
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.)
See lvm(8) for information about environment variables used by lvm.
For example, LVM_VG_NAME can generally be substituted for a required
VG parameter.
Create a VG with two PVs, using the default physical extent size.
vgcreate myvg /dev/sdk1 /dev/sdl1
lvm(8) lvm.conf(5) lvmconfig(8)
pvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8) pvremove(8)
pvresize(8) pvs(8) pvscan(8)
vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8)
vgconvert(8) vgdisplay(8) vgexport(8) vgextend(8) vgimport(8)
vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8) vgremove(8)
vgrename(8) vgs(8) vgscan(8) vgsplit(8)
lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8)
lvreduce(8) lvremove(8) lvrename(8) lvresize(8) lvs(8) lvscan(8)
lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8)
blkdeactivate(8) lvmdump(8)
dmeventd(8) lvmetad(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) clvmd(8)
cmirrord(8) lvmdbusd(8)
lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)
This page is part of the lvm2 (Logical Volume Manager 2) project.
Information about the project can be found at
⟨http://www.sourceware.org/lvm2/⟩. If you have a bug report for this
manual page, send it to linux-lvm@redhat.com. This page was obtained
from the project's upstream Git repository
⟨git://sourceware.org/git/lvm2.git⟩ on 2017-07-05. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
Red Hat, Inc. LVM TOOLS 2.02.173(2)-git (2017-06-28) VGCREATE(8)
Pages that refer to this page: lvmsystemid(7), lvchange(8), lvconvert(8), lvcreate(8), lvdisplay(8), lvextend(8), lvm(8), lvmconfig(8), lvmdiskscan(8), lvm-fullreport(8), lvmlockd(8), lvm-lvpoll(8), lvreduce(8), lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8), pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8), vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgconvert(8), vgcreate(8), vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8)