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NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | EXAMPLES | SEE ALSO | COLOPHON |
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PVCREATE(8) System Manager's Manual PVCREATE(8)
pvcreate - Initialize physical volume(s) for use by LVM
pvcreate position_args
[ option_args ]
pvcreate initializes a PV so that it is recognized as belonging to
LVM, and allows the PV to be used in a VG. A PV can be a disk
partition, whole disk, meta device, or loopback file.
For DOS disk partitions, the partition id should be set to 0x8e using
fdisk(8), cfdisk(8), or a equivalent. For GUID Partition Table (GPT),
the id is E6D6D379-F507-44C2-A23C-238F2A3DF928. For 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:
dd if=/dev/zero of=PhysicalVolume bs=512 count=1
Use vgcreate(8) to create a new VG on the PV, or vgextend(8) to add
the PV to existing VG.
The force option will create a PV without confirmation. Repeating
the force option (-ff) will forcibly create a PV, overriding checks
that normally prevent it, e.g. if the PV is already in a VG.
pvcreate PV ...
[ -f|--force ]
[ -M|--metadatatype lvm2|lvm1 ]
[ -u|--uuid String ]
[ -Z|--zero y|n ]
[ --dataalignment Size[k|UNIT] ]
[ --dataalignmentoffset Size[k|UNIT] ]
[ --bootloaderareasize Size[m|UNIT] ]
[ --labelsector Number ]
[ --[pv]metadatacopies 0|1|2 ]
[ --metadatasize Size[m|UNIT] ]
[ --metadataignore y|n ]
[ --norestorefile ]
[ --setphysicalvolumesize Size[m|UNIT] ]
[ --reportformat basic|json ]
[ --restorefile 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 ]
[ --lockopt String ]
[ --longhelp ]
[ --profile String ]
[ --version ]
--bootloaderareasize Size[m|UNIT]
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.
--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.
--longhelp
Display long help text.
--metadataignore y|n
Specifies the metadataignore property of a PV. If yes,
metadata areas on the PV are ignored, and lvm will not store
metadata in the metadata areas of the PV. If no, lvm will
store metadata on the PV.
--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.
--norestorefile
In conjunction with --uuid, this allows a uuid to be specified
without also requiring that a backup of the metadata be
provided.
--profile String
An alias for --commandprofile or --metadataprofile, depending
on the command.
--[pv]metadatacopies 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.
--restorefile String
In conjunction with --uuid, this reads the file (produced by
vgcfgbackup), extracts the location and size of the data on
the PV, and ensures that the metadata produced by the program
is consistent with the contents of the file, i.e. the physical
extents will be in the same place and not be overwritten by
new metadata. This provides a mechanism to upgrade the
metadata format or to add/remove metadata areas. Use with
care.
--setphysicalvolumesize Size[m|UNIT]
Overrides the automatically detected size of the PV. Use with
care, or prior to reducing the physical size of the device.
-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.
-u|--uuid String
Specify a UUID for the device. Without this option, a random
UUID is generated. This option is needed before restoring a
backup of LVM metadata onto a replacement device; see
vgcfgrestore(8). As such, use of --restorefile is compulsory
unless the --norestorefile is used. All PVs must have unique
UUIDs, and LVM will prevent certain operations if multiple
devices are seen with the same UUID. See vgimportclone(8) for
more information.
-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.
-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.
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.
Initialize a partition and a full device.
pvcreate /dev/sdc4 /dev/sde
If a device is a 4KiB sector drive that compensates for windows
partitioning (sector 7 is the lowest aligned logical block, the 4KiB
sectors start at LBA -1, and consequently sector 63 is aligned on a
4KiB boundary) manually account for this when initializing for use by
LVM.
pvcreate --dataalignmentoffset 7s /dev/sdb
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 2018-02-02. (At that time,
the date of the most recent commit that was found in the repository
was 2018-02-01.) 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 2.02.178(2)-git (2017-12-18) PVCREATE(8)
Pages that refer to this page: lvchange(8), lvconvert(8), lvcreate(8), lvdisplay(8), lvextend(8), lvm(8), lvmconfig(8), lvmdiskscan(8), lvm-fullreport(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)
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