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lvcreate — Create a logical volume
Contents
Advanced Usage
Alternate command forms, advanced command usage, and listing of all valid syntax for completeness.
Create an LV that returns errors when used.
lvcreate--typeerror-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ COMMON_OPTIONS ]
—
Create an LV that returns zeros when read.
lvcreate--typezero-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ COMMON_OPTIONS ]
—
Create a linear LV.
lvcreate--typelinear-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a striped LV (also see lvcreate --stripes).
lvcreate--typestriped-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a mirror LV (also see --type raid1).
lvcreate--typemirror-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -m|--mirrorsNumber ]
[ -R|--regionsizeSize[m|UNIT] ]
[ --mirrorlogcore|disk ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a COW snapshot LV of an origin LV
(also see --snapshot).
lvcreate--typesnapshot-L|--sizeSize[m|UNIT] LV
[ -l|--extentsNumber[PERCENT] ]
[ -s|--snapshot ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a sparse COW snapshot LV of a virtual origin LV
(also see --snapshot).
lvcreate--typesnapshot-L|--sizeSize[m|UNIT]
-V|--virtualsizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -s|--snapshot ]
[ -c|--chunksizeSize[k|UNIT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin pool.
lvcreate-T|--thin-L|--sizeSize[m|UNIT] VG
[ --typethin-pool ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin pool named in --thinpool.
lvcreate-L|--sizeSize[m|UNIT] --thinpoolLV_newVG
[ --typethin-pool ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a cache pool named by the --cachepool arg
(variant, uses --cachepool in place of --name).
lvcreate--typecache-pool-L|--sizeSize[m|UNIT]
--cachepoolLV_newVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -H|--cache ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV in a thin pool.
lvcreate--typethin-V|--virtualsizeSize[m|UNIT]
--thinpoolLVVG
[ -T|--thin ]
[ COMMON_OPTIONS ]
—
Create a thin LV in a thin pool named in the first arg
(variant, also see --thinpool for naming pool).
lvcreate--typethin-V|--virtualsizeSize[m|UNIT] LV1
[ -T|--thin ]
[ COMMON_OPTIONS ]
LV1 types: thinpool
—
Create a thin LV in the thin pool named in the first arg
(also see --thinpool for naming pool.)
lvcreate-V|--virtualsizeSize[m|UNIT] LV1
[ --typethin ] (implied)
[ -T|--thin ]
[ COMMON_OPTIONS ]
LV1 types: thinpool
—
Create a thin LV that is a snapshot of an existing thin LV.
lvcreate--typethinLV1
[ -T|--thin ]
[ -s|--snapshot ]
[ COMMON_OPTIONS ]
LV1 types: thin
—
Create a thin LV that is a snapshot of an existing thin LV.
lvcreate-T|--thinLV1
[ --typethin ] (implied)
[ -s|--snapshot ]
[ COMMON_OPTIONS ]
LV1 types: thin
—
Create a thin LV that is a snapshot of an external origin LV.
lvcreate-s|--snapshot--thinpoolLVLV
[ --typethin ] (implied)
[ COMMON_OPTIONS ]
—
Create a VDO LV with VDO pool.
lvcreate--vdo-L|--sizeSize[m|UNIT] VG
[ --typevdo ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -V|--virtualsizeSize[m|UNIT] ]
[ --vdopoolLV_new ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a VDO LV with VDO pool.
lvcreate--vdopoolLV_new-L|--sizeSize[m|UNIT] VG
[ --typevdo ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -V|--virtualsizeSize[m|UNIT] ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV, first creating a thin pool for it,
where the new thin pool is named by the --thinpool arg.
lvcreate--typethin-V|--virtualsizeSize[m|UNIT]
-L|--sizeSize[m|UNIT] --thinpoolLV_newVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV, first creating a thin pool for it,
where the new thin pool is named by --thinpool.
lvcreate-V|--virtualsizeSize[m|UNIT] -L|--sizeSize[m|UNIT]
--thinpoolLV_newVG
[ --typethin ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV, first creating a thin pool for it,
where the new thin pool is named in the first arg,
or the new thin pool name is generated when the first
arg is a VG name.
lvcreate--typethin-V|--virtualsizeSize[m|UNIT]
-L|--sizeSize[m|UNIT] VG|LV_new
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV, first creating a thin pool for it,
where the new thin pool is named in the first arg,
or the new thin pool name is generated when the first
arg is a VG name.
lvcreate-T|--thin-V|--virtualsizeSize[m|UNIT]
-L|--sizeSize[m|UNIT] VG|LV_new
[ --typethin ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV, first creating a thin pool for it.
Create a sparse snapshot of a virtual origin LV
Chooses type thin or snapshot according to
config setting sparse_segtype_default.
lvcreate-L|--sizeSize[m|UNIT] -V|--virtualsizeSize[m|UNIT] VG
[ --typethin|snapshot ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -s|--snapshot ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach the specified cachepool
which converts the new LV to type cache.
lvcreate-L|--sizeSize[m|UNIT] --cachepoolLVVG
[ --typecache ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -H|--cache ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach the specified cachepool
which converts the new LV to type cache.
(variant, also use --cachepool).
lvcreate--typecache-L|--sizeSize[m|UNIT] LV1
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -H|--cache ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
LV1 types: cachepool
—
When the LV arg is a cachepool, then create a new LV and
attach the cachepool arg to it.
(variant, use --type cache and --cachepool.)
When the LV arg is not a cachepool, then create a new cachepool
and attach it to the LV arg (alternative, use lvconvert.)
lvcreate-H|--cache-L|--sizeSize[m|UNIT] LV
[ --typecache ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Description
lvcreate creates a new LV in a VG. For standard LVs, this requires allocating logical extents from the
VG's free physical extents. If there is not enough free space, the VG can be extended with other PVs
(vgextend(8)), or existing LVs can be reduced or removed (lvremove(8), lvreduce(8)).
To control which PVs a new LV will use, specify one or more PVs as position args at the end of the com‐
mand line. lvcreate will allocate physical extents only from the specified PVs.
lvcreate can also create snapshots of existing LVs, e.g. for backup purposes. The data in a new snapshot
LV represents the content of the original LV from the time the snapshot was created.
RAID LVs can be created by specifying an LV type when creating the LV (see lvmraid(7)). Different RAID
levels require different numbers of unique PVs be available in the VG for allocation.
Thin pools (for thin provisioning) and cache pools (for caching) are represented by special LVs with
types thin-pool and cache-pool (see lvmthin(7) and lvmcache(7)). The pool LVs are not usable as standard
block devices, but the LV names act as references to the pools.
Thin LVs are thinly provisioned from a thin pool, and are created with a virtual size rather than a phys‐
ical size. A cache LV is the combination of a standard LV with a cache pool, used to cache active por‐
tions of the LV to improve performance.
VDO LVs are also provisioned volumes from a VDO pool, and are created with a virtual size rather than a
physical size (see lvmvdo(7)).
Usagenotes
In the usage section below, --sizeSize can be replaced with --extentsNumber. See descriptions in the
options section.
In the usage section below, --name is omitted from the required options, even though it is typically
used. When the name is not specified, a new LV name is generated with the "lvol" prefix and a unique nu‐
meric suffix.
In the usage section below, when creating a pool and the name is omitted the new LV pool name is generat‐
ed with the "vpool" for vdo-pools for prefix and a unique numeric suffix.
Pool name can be specified together with VG name i.e.: vg00/mythinpool.
Environment Variables
See lvm(8) for information about environment variables used by lvm. For example, LVM_VG_NAME can gener‐
ally be substituted for a required VG parameter.
Examples
Create a striped LV with 3 stripes, a stripe size of 8 KiB and a size of 100 MiB. The LV name is chosen
by lvcreate.
lvcreate-i3-I8-L100mvg00
Create a raid1 LV with two images, and a usable size of 500 MiB. This operation requires two devices, one
for each mirror image. RAID metadata (superblock and bitmap) is also included on the two devices.
lvcreate--typeraid1-m1-L500m-nmylvvg00
Create a mirror LV with two images, and a usable size of 500 MiB. This operation requires three devices:
two for mirror images and one for a disk log.
lvcreate--typemirror-m1-L500m-nmylvvg00
Create a mirror LV with 2 images, and a usable size of 500 MiB. This operation requires 2 devices be‐
cause the log is in memory.
lvcreate--typemirror-m1--mirrorlogcore-L500m-nmylvvg00
Create a copy-on-write snapshot of an LV:
lvcreate--snapshot--size100m--namemysnapvg00/mylv
Create a copy-on-write snapshot with a size sufficient for overwriting 20% of the size of the original
LV.
lvcreate-s-l20%ORIGIN-nmysnapvg00/mylv
Create a sparse LV with 1 TiB of virtual space, and actual space just under 100 MiB.
lvcreate--snapshot--virtualsize1t--size100m--namemylvvg00
Create a linear LV with a usable size of 64 MiB on specific physical extents.
lvcreate-L64m-nmylvvg00/dev/sda:0-7/dev/sdb:0-7
Create a RAID5 LV with a usable size of 5 GiB, 3 stripes, a stripe size of 64 KiB, using a total of 4 de‐
vices (including one for parity).
lvcreate--typeraid5-L5G-i3-I64-nmylvvg00
Create a RAID5 LV using all of the free space in the VG and spanning all the PVs in the VG (note that the
command will fail if there are more than 8 PVs in the VG, in which case -i7 must be used to get to the
current maximum of 8 devices including parity for RaidLVs).
lvcreate--configallocation/raid_stripe_all_devices=1--typeraid5-l100%FREE-nmylvvg00
Create RAID10 LV with a usable size of 5 GiB, using 2 stripes, each on a two-image mirror. (Note that the
-i and -m arguments behave differently: -i specifies the total number of stripes, but -m specifies the
number of images in addition to the first image).
lvcreate--typeraid10-L5G-i2-m1-nmylvvg00
Create a 1 TiB thin LV mythin, with 256 GiB thinpool tpool0 in vg00.
lvcreate-T-V1T--size256G--namemythinvg00/tpool0
Create a 1 TiB thin LV, first creating a new thin pool for it, where the thin pool has 100 MiB of space,
uses 2 stripes, has a 64 KiB stripe size, and 256 KiB chunk size.
lvcreate--typethin--namemylv--thinpoolmypool-V1t-L100m-i2-I64-c256vg00
Create a thin snapshot of a thin LV (the size option must not be used, otherwise a copy-on-write snapshot
would be created).
lvcreate--snapshot--namemysnapvg00/thinvol
Create a thin snapshot of the read-only inactive LV named "origin" which becomes an external origin for
the thin snapshot LV.
lvcreate--snapshot--namemysnap--thinpoolmypoolvg00/origin
Create a cache pool from a fast physical device. The cache pool can then be used to cache an LV.
lvcreate--typecache-pool-L1G-nmy_cpoolvg00/dev/fast1
Create a cache LV, first creating a new origin LV on a slow physical device, then combining the new ori‐
gin LV with an existing cache pool.
lvcreate--typecache--cachepoolmy_cpool-L100G-nmylvvg00/dev/slow1
Create a VDO LV vdo0 with VDOPoolLV size of 10 GiB and name vpool1.
lvcreate--vdo--size10G--namevdo0vg00/vpool1Name
lvcreate — Create a logical volume
Options
-a|--activatey|n|ay
Controls the active state of the new LV. y makes the LV active, or available. New LVs are made
active by default. n makes the LV inactive, or unavailable, only when possible. In some cases,
creating an LV requires it to be active. For example, COW snapshots of an active origin LV can
only be created in the active state (this does not apply to thin snapshots). The --zero option
normally requires the LV to be active. If autoactivation ay is used, the LV is only activated if
it matches an item in lvm.conf(5) activation/auto_activation_volume_list. ay implies --zero n and
--wipesignatures n. See lvmlockd(8) for more information about activation options for shared VGs.
--addtagTag
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.
--alloccontiguous|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 over‐
ridden 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|--autobackupy|n
Specifies if metadata should be backed up automatically after a change. Enabling this is strongly
advised! See vgcfgbackup(8) for more information.
-H|--cache
Specifies the command is handling a cache LV or cache pool. See --type cache and --type
cache-pool. See lvmcache(7) for more information about LVM caching.
--cachedevicePV
The name of a device to use for a cache.
--cachemetadataformatauto|1|2
Specifies the cache metadata format used by cache target.
--cachemodewritethrough|writeback|passthrough
Specifies when writes to a cache LV should be considered complete. writeback considers a write
complete as soon as it is stored in the cache pool. writethough considers a write complete only
when it has been stored in both the cache pool and on the origin LV. While writethrough may be
slower for writes, it is more resilient if something should happen to a device associated with the
cache pool LV. With passthrough, all reads are served from the origin LV (all reads miss the
cache) and all writes are forwarded to the origin LV; additionally, write hits cause cache block
invalidates. See lvmcache(7) for more information.
--cachepolicyString
Specifies the cache policy for a cache LV. See lvmcache(7) for more information.
--cachepoolLV
The name of a cache pool.
--cachesettingsString
Specifies tunable kernel options for dm-cache or dm-writecache LVs. Use the form 'option=value'
or 'option1=value option2=value', or repeat --cachesettings for each option being set. These set‐
tings override the default kernel behaviors which are usually adequate. To remove cachesettings
and revert to the default kernel behaviors, use --cachesettings 'default' for dm-cache or an empty
string --cachesettings '' for dm-writecache. See lvmcache(7) for more information.
--cachesizeSize[m|UNIT]
The size of cache to use.
--cachevolLV
The name of a cache volume.
-c|--chunksizeSize[k|UNIT]
The size of chunks in a snapshot, cache pool or thin pool. For snapshots, the value must be a
power of 2 between 4 KiB and 512 KiB and the default value is 4. For a cache pool the value must
be between 32 KiB and 1 GiB and the default value is 64. For a thin pool the value must be be‐
tween 64 KiB and 1 GiB and the default value starts with 64 and scales up to fit the pool metadata
size within 128 MiB, if the pool metadata size is not specified. The value must be a multiple of
64 KiB. See lvmthin(7) and lvmcache(7) for more information.
--commandprofileString
The command profile to use for command configuration. See lvm.conf(5) for more information about
profiles.
--compressiony|n
Controls whether compression is enabled or disable for VDO volume. See lvmvdo(7) for more infor‐
mation about VDO usage.
--configString
Config settings for the command. These override lvm.conf(5) settings. The String arg uses the
same format as lvm.conf(5), or may use section/field syntax. See lvm.conf(5) for more information
about config.
-C|--contiguousy|n
Sets or resets the contiguous allocation policy for LVs. Default is no contiguous allocation
based on a next free principle. It is only possible to change a non-contiguous allocation policy
to contiguous if all of the allocated physical extents in the LV are already contiguous.
-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).
--deduplicationy|n
Controls whether deduplication is enabled or disable for VDO volume. See lvmvdo(7) for more in‐
formation about VDO usage.
--devicesPV
Restricts the devices that are visible and accessible to the command. Devices not listed will ap‐
pear to be missing. This option can be repeated, or accepts a comma separated list of devices.
This overrides the devices file.
--devicesfileString
A file listing devices that LVM should use. The file must exist in /etc/lvm/devices/ and is man‐
aged with the lvmdevices(8) command. This overrides the lvm.conf(5) devices/devicesfile and de‐vices/use_devicesfile settings.
--discardspassdown|nopassdown|ignore
Specifies how the device-mapper thin pool layer in the kernel should handle discards. ignore
causes the thin pool to ignore discards. nopassdown causes the thin pool to process discards it‐
self to allow reuse of unneeded extents in the thin pool. passdown causes the thin pool to
process discards itself (like nopassdown) and pass the discards to the underlying device. See
lvmthin(7) for more information.
--driverloadedy|n
If set to no, the command will not attempt to use device-mapper. For testing and debugging.
--errorwhenfully|n
Specifies thin pool behavior when data space is exhausted. When yes, device-mapper will immedi‐
ately return an error when a thin pool is full and an I/O request requires space. When no, de‐
vice-mapper will queue these I/O requests for a period of time to allow the thin pool to be ex‐
tended. Errors are returned if no space is available after the timeout. (Also see dm-thin-pool
kernel module option no_space_timeout.) See lvmthin(7) for more information.
-l|--extentsNumber[PERCENT]
Specifies the size of the new LV in logical extents. The --size and --extents options are alter‐
nate methods of specifying size. The total number of physical extents used will be greater when
redundant data is needed for RAID levels. An alternate syntax allows the size to be determined
indirectly as a percentage of the size of a related VG, LV, or set of PVs. The suffix %VG denotes
the total size of the VG, the suffix %FREE the remaining free space in the VG, and the suffix %PVS
the free space in the specified PVs. For a snapshot, the size can be expressed as a percentage of
the total size of the origin LV with the suffix %ORIGIN (100%ORIGIN provides space for the whole
origin). When expressed as a percentage, the size defines an upper limit for the number of logi‐
cal extents in the new LV. The precise number of logical extents in the new LV is not determined
until the command has completed.
-h|--help
Display help text.
-K|--ignoreactivationskip
Ignore the "activation skip" LV flag during activation to allow LVs with the flag set to be acti‐
vated.
--ignoremonitoring
Do not interact with dmeventd unless --monitor is specified. Do not use this if dmeventd is al‐
ready monitoring a device.
--integritysettingsString
Specifies tunable kernel options for dm-integrity. See lvmraid(7) for more information.
--journalString
Record information in the systemd journal. This information is in addition to information enabled
by the lvm.conf log/journal setting. command: record information about the command. output:
record the default command output. debug: record full command debugging.
--lockoptString
Used to pass options for special cases to lvmlockd. See lvmlockd(8) for more information.
--longhelp
Display long help text.
-j|--majorNumber
Sets the major number of an LV block device.
--[raid]maxrecoveryrateSize[k|UNIT]
Sets the maximum recovery rate for a RAID LV. The rate value is an amount of data per second for
each device in the array. Setting the rate to 0 means it will be unbounded. See lvmraid(7) for
more information.
--metadataprofileString
The metadata profile to use for command configuration. See lvm.conf(5) for more information about
profiles.
--minorNumber
Sets the minor number of an LV block device.
--[raid]minrecoveryrateSize[k|UNIT]
Sets the minimum recovery rate for a RAID LV. The rate value is an amount of data per second for
each device in the array. Setting the rate to 0 means it will be unbounded. See lvmraid(7) for
more information.
--mirrorlogcore|disk
Specifies the type of mirror log for LVs with the "mirror" type (does not apply to the "raid1"
type.) disk is a persistent log and requires a small amount of storage space, usually on a sepa‐
rate device from the data being mirrored. core is not persistent; the log is kept only in memory.
In this case, the mirror must be synchronized (by copying LV data from the first device to others)
each time the LV is activated, e.g. after reboot. mirrored is a persistent log that is itself
mirrored, but should be avoided. Instead, use the raid1 type for log redundancy.
-m|--mirrorsNumber
Specifies the number of mirror images in addition to the original LV image, e.g. --mirrors 1 means
there are two images of the data, the original and one mirror image. Optional positional PV args
on the command line can specify the devices the images should be placed on. There are two mirror‐
ing implementations: "raid1" and "mirror". These are the names of the corresponding LV types, or
"segment types". Use the --type option to specify which to use (raid1 is default, and mirror is
legacy) Use lvm.conf(5) global/mirror_segtype_default and global/raid10_segtype_default to config‐
ure the default types. See the --nosync option for avoiding initial image synchronization. See
lvmraid(7) for more information.
--monitory|n
Start (yes) or stop (no) monitoring an LV with dmeventd. dmeventd monitors kernel events for an
LV, and performs automated maintenance for the LV in response to specific events. See dmeventd(8)
for more information.
-n|--nameString
Specifies the name of a new LV. When unspecified, a default name of "lvol#" is generated, where #
is a number generated by LVM.
--nohints
Do not use the hints file to locate devices for PVs. A command may read more devices to find PVs
when hints are not used. The command will still perform standard hint file invalidation where ap‐
propriate.
--nolocking
Disable locking. Use with caution, concurrent commands may produce incorrect results.
--nosync
Causes the creation of mirror, raid1, raid4, raid5 and raid10 to skip the initial synchronization.
In case of mirror, raid1 and raid10, any data written afterwards will be mirrored, but the origi‐
nal contents will not be copied. In case of raid4 and raid5, no parity blocks will be written,
though any data written afterwards will cause parity blocks to be stored. This is useful for
skipping a potentially long and resource intensive initial sync of an empty mir‐
ror/raid1/raid4/raid5 and raid10 LV. This option is not valid for raid6, because raid6 relies on
proper parity (P and Q Syndromes) being created during initial synchronization in order to recon‐
struct proper user date in case of device failures. raid0 and raid0_meta do not provide any data
copies or parity support and thus do not support initial synchronization.
--noudevsync
Disables udev synchronization. The process will not wait for notification from udev. It will con‐
tinue irrespective of any possible udev processing in the background. Only use this if udev is not
running or has rules that ignore the devices LVM creates.
-p|--permissionrw|r
Set access permission to read only r or read and write rw.
-M|--persistenty|n
When yes, makes the specified minor number persistent.
--pooldatavdoy|n
Use VDO type volume for pool data volume.
--poolmetadatasizeSize[m|UNIT]
Specifies the size of the new pool metadata LV.
--poolmetadatasparey|n
Enable or disable the automatic creation and management of a spare pool metadata LV in the VG. A
spare metadata LV is reserved space that can be used when repairing a pool.
--profileString
An alias for --commandprofile or --metadataprofile, depending on the command.
-q|--quiet ...
Suppress output and log messages. Overrides --debug and --verbose. Repeat once to also suppress
any prompts with answer 'no'.
--raidintegrityy|n
Enable or disable data integrity checksums for raid images.
--raidintegrityblocksizeNumber
The block size to use for dm-integrity on raid images. The integrity block size should usually
match the device logical block size, or the file system block size. It may be less than the file
system block size, but not less than the device logical block size. Possible values: 512, 1024,
2048, 4096.
--raidintegritymodeString
Use a journal (default) or bitmap for keeping integrity checksums consistent in case of a crash.
The bitmap areas are recalculated after a crash, so corruption in those areas would not be detect‐
ed. A journal does not have this problem. The journal mode doubles writes to storage, but can
improve performance for scattered writes packed into a single journal write. bitmap mode can in
theory achieve full write throughput of the device, but would not benefit from the potential scat‐
tered write optimization.
-r|--readaheadauto|none|Number
Sets read ahead sector count of an LV. auto is the default which allows the kernel to choose a
suitable value automatically. none is equivalent to zero.
-R|--regionsizeSize[m|UNIT]
Size of each raid or mirror synchronization region. lvm.conf(5) activation/raid_region_size can
be used to configure a default.
--reportformatbasic|json|json_std
Overrides current output format for reports which is defined globally by the report/output_format
setting in lvm.conf(5). 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. json_std produces report output in JSON format which is
more compliant with JSON standard. See lvmreport(7) for more information.
-k|--setactivationskipy|n
Persistently sets (yes) or clears (no) the "activation skip" flag on an LV. An LV with this flag
set is not activated unless the --ignoreactivationskip option is used by the activation command.
This flag is set by default on new thin snapshot LVs. The flag is not applied to deactivation.
The current value of the flag is indicated in the lvs lv_attr bits.
--setautoactivationy|n
Set the autoactivation property on a VG or LV. Display the property with vgs or lvs "-o autoacti‐
vation". When the autoactivation property is disabled, the VG or LV will not be activated by a
command doing autoactivation (vgchange, lvchange, or pvscan using -aay.) If autoactivation is
disabled on a VG, no LVs will be autoactivated in that VG, and the LV autoactivation property has
no effect. If autoactivation is enabled on a VG, autoactivation can be disabled for individual
LVs.
-L|--sizeSize[m|UNIT]
Specifies the size of the new LV. The --size and --extents options are alternate methods of spec‐
ifying size. The total number of physical extents used will be greater when redundant data is
needed for RAID levels.
-s|--snapshot
Create a snapshot. Snapshots provide a "frozen image" of an origin LV. The snapshot LV can be
used, e.g. for backups, while the origin LV continues to be used. This option can create a COW
(copy on write) snapshot, or a thin snapshot (in a thin pool.) Thin snapshots are created when
the origin is a thin LV and the size option is NOT specified. Thin snapshots share the same blocks
in the thin pool, and do not allocate new space from the VG. Thin snapshots are created with the
"activation skip" flag, see --setactivationskip. A thin snapshot of a non-thin "external origin"
LV is created when a thin pool is specified. Unprovisioned blocks in the thin snapshot LV are read
from the external origin LV. The external origin LV must be read-only. See lvmthin(7) for more
information about LVM thin provisioning. COW snapshots are created when a size is specified. The
size is allocated from space in the VG, and is the amount of space that can be used for saving COW
blocks as writes occur to the origin or snapshot. The size chosen should depend upon the amount
of writes that are expected; often 20% of the origin LV is enough. If COW space runs low, it can
be extended with lvextend (shrinking is also allowed with lvreduce.) A small amount of the COW
snapshot LV size is used to track COW block locations, so the full size is not available for COW
data blocks. Use lvs to check how much space is used, and see --monitor to to automatically ex‐
tend the size to avoid running out of space.
-i|--stripesNumber
Specifies the number of stripes in a striped LV. This is the number of PVs (devices) that a
striped LV is spread across. Data that appears sequential in the LV is spread across multiple de‐
vices in units of the stripe size (see --stripesize). This does not change existing allocated
space, but only applies to space being allocated by the command. When creating a RAID 4/5/6 LV,
this number does not include the extra devices that are required for parity. The largest number
depends on the RAID type (raid0: 64, raid10: 32, raid4/5: 63, raid6: 62), and when unspecified,
the default depends on the RAID type (raid0: 2, raid10: 2, raid4/5: 3, raid6: 5.) To stripe a new
raid LV across all PVs by default, see lvm.conf(5) allocation/raid_stripe_all_devices.
-I|--stripesizeSize[k|UNIT]
The amount of data that is written to one device before moving to the next in a striped LV.
-t|--test
Run in test mode. Commands will not update metadata. This is implemented by disabling all metada‐
ta 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.
-T|--thin
Specifies the command is handling a thin LV or thin pool. See --type thin, --type thin-pool, and
--virtualsize. See lvmthin(7) for more information about LVM thin provisioning.
--thinpoolLV
The name of a thin pool LV.
--typelinear|striped|snapshot|raid|mirror|thin|thin-pool|vdo|vdo-pool|cache|cache-pool|writecache
The LV type, also known as "segment type" or "segtype". See usage descriptions for the specific
ways to use these types. For more information about redundancy and performance (raid<N>, mirror,
striped, linear) see lvmraid(7). For thin provisioning (thin, thin-pool) see lvmthin(7). For
performance caching (cache, cache-pool) see lvmcache(7). For copy-on-write snapshots (snapshot)
see usage definitions. For VDO (vdo) see lvmvdo(7). Several commands omit an explicit type op‐
tion because the type is inferred from other options or shortcuts (e.g. --stripes, --mirrors,
--snapshot, --virtualsize, --thin, --cache, --vdo). Use inferred types with care because it can
lead to unexpected results.
--vdo
Specifies the command is handling VDO LV. See --type vdo. See lvmvdo(7) for more information
about VDO usage.
--vdopoolLV
The name of a VDO pool LV. See lvmvdo(7) for more information about VDO usage.
--vdosettingsString
Specifies tunable VDO options for VDO LVs. Use the form 'option=value' or 'option1=value op‐
tion2=value', or repeat --vdosettings for each option being set. These settings override the de‐
fault VDO behaviors. To remove vdosettings and revert to the default VDO behaviors, use --vdoset‐
tings 'default'. See lvmvdo(7) 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.
-V|--virtualsizeSize[m|UNIT]
The virtual size of a new thin LV. See lvmthin(7) for more information about LVM thin provision‐
ing. Using virtual size (-V) and actual size (-L) together creates a sparse LV. lvm.conf(5)
global/sparse_segtype_default determines the default segment type used to create a sparse LV.
Anything written to a sparse LV will be returned when reading from it. Reading from other areas
of the LV will return blocks of zeros. When using a snapshot to create a sparse LV, a hidden vir‐
tual device is created using the zero target, and the LV has the suffix _vorigin. Snapshots are
less efficient than thin provisioning when creating large sparse LVs (GiB).
-W|--wipesignaturesy|n
Controls detection and subsequent wiping of signatures on new LVs. There is a prompt for each
signature detected to confirm its wiping (unless --yes is used to override confirmations.) When
not specified, signatures are wiped whenever zeroing is done (see --zero). This behaviour can be
configured with lvm.conf(5) allocation/wipe_signatures_when_zeroing_new_lvs. If blkid wiping is
used (lvm.conf(5) allocation/use_blkid_wiping) and LVM is compiled with blkid wiping support, then
the blkid(8) library is used to detect the signatures (use blkid -k to list the signatures that
are recognized). Otherwise, native LVM code is used to detect signatures (only MD RAID, swap and
LUKS signatures are detected in this case.) The LV is not wiped if the read only flag is set.
-y|--yes
Do not prompt for confirmation interactively but always assume the answer yes. Use with extreme
caution. (For automatic no, see -qq.)
-Z|--zeroy|n
Controls zeroing of the first 4 KiB of data in the new LV. Default is y. Snapshot COW volumes
are always zeroed. For thin pools, this controls zeroing of provisioned blocks. LV is not zeroed
if the read only flag is set. Warning: trying to mount an unzeroed LV can cause the system to
hang.
See Also
lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(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), vgimportdevices(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), blkdeactivate(8), lvmdump(8), dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8), lvmdbusd(8), fsadm(8), lvmsystemid(7), lvmreport(7), lvmcache(7), lvmraid(7), lvmthin(7), lvmvdo(7), lvmautoactivation(7) Red Hat, Inc. LVM TOOLS 2.03.31(2) (2025-02-27) LVCREATE(8)
Synopsis
lvcreateoption_argsposition_args
[ option_args ]
[ position_args ]
-a|--activatey|n|ay--addtagTag--alloccontiguous|cling|cling_by_tags|normal|anywhere|inherit-A|--autobackupy|n-H|--cache--cachedevicePV--cachemetadataformatauto|1|2--cachemodewritethrough|writeback|passthrough--cachepolicyString--cachepoolLV--cachesettingsString--cachesizeSize[m|UNIT]
--cachevolLV-c|--chunksizeSize[k|UNIT]
--commandprofileString--compressiony|n--configString-C|--contiguousy|n-d|--debug--deduplicationy|n--devicesPV--devicesfileString--discardspassdown|nopassdown|ignore--driverloadedy|n--errorwhenfully|n-l|--extentsNumber[PERCENT]
-h|--help-K|--ignoreactivationskip--ignoremonitoring--integritysettingsString--journalString--lockoptString--longhelp-j|--majorNumber--[raid]maxrecoveryrateSize[k|UNIT]
--metadataprofileString--minorNumber--[raid]minrecoveryrateSize[k|UNIT]
--mirrorlogcore|disk-m|--mirrorsNumber--monitory|n-n|--nameString--nohints--nolocking--nosync--noudevsync-p|--permissionrw|r-M|--persistenty|n--pooldatavdoy|n--poolmetadatasizeSize[m|UNIT]
--poolmetadatasparey|n--profileString-q|--quiet--raidintegrityy|n--raidintegrityblocksizeNumber--raidintegritymodeString-r|--readaheadauto|none|Number-R|--regionsizeSize[m|UNIT]
--reportformatbasic|json|json_std-k|--setactivationskipy|n--setautoactivationy|n-L|--sizeSize[m|UNIT]
-s|--snapshot-i|--stripesNumber-I|--stripesizeSize[k|UNIT]
-t|--test-T|--thin--thinpoolLV--typelinear|striped|snapshot|raid|mirror|thin|thin-pool|vdo|vdo-pool|cache|cache-pool|writecache--vdo--vdopoolLV--vdosettingsString-v|--verbose--version-V|--virtualsizeSize[m|UNIT]
-W|--wipesignaturesy|n-y|--yes-Z|--zeroy|nUsage
Create a linear LV.
lvcreate-L|--sizeSize[m|UNIT] VG
[ --typelinear ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a striped LV.
lvcreate-i|--stripesNumber-L|--sizeSize[m|UNIT] VG
[ --typestriped ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -I|--stripesizeSize[k|UNIT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a raid1 or mirror LV.
lvcreate-m|--mirrorsNumber-L|--sizeSize[m|UNIT] VG
[ --typeraid1|mirror ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -R|--regionsizeSize[m|UNIT] ]
[ --mirrorlogcore|disk ]
[ --[raid]minrecoveryrateSize[k|UNIT] ]
[ --[raid]maxrecoveryrateSize[k|UNIT] ]
[ --raidintegrityy|n ]
[ --raidintegritymodeString ]
[ --raidintegrityblocksizeNumber ]
[ --integritysettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a raid LV (a specific raid level must be used, e.g. raid1).
lvcreate--typeraid-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -m|--mirrorsNumber ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -R|--regionsizeSize[m|UNIT] ]
[ --[raid]minrecoveryrateSize[k|UNIT] ]
[ --[raid]maxrecoveryrateSize[k|UNIT] ]
[ --raidintegrityy|n ]
[ --raidintegritymodeString ]
[ --raidintegrityblocksizeNumber ]
[ --integritysettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a raid10 LV.
lvcreate-m|--mirrorsNumber-i|--stripesNumber-L|--sizeSize[m|UNIT] VG
[ --typeraid10 ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -R|--regionsizeSize[m|UNIT] ]
[ --[raid]minrecoveryrateSize[k|UNIT] ]
[ --[raid]maxrecoveryrateSize[k|UNIT] ]
[ --raidintegrityy|n ]
[ --raidintegritymodeString ]
[ --raidintegrityblocksizeNumber ]
[ --integritysettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a COW snapshot LV of an origin LV.
lvcreate-s|--snapshot-L|--sizeSize[m|UNIT] LV
[ --typesnapshot ] (implied) [ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin pool.
lvcreate--typethin-pool-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -T|--thin ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --thinpoolLV_new ]
[ --discardspassdown|nopassdown|ignore ]
[ --errorwhenfully|n ]
[ --pooldatavdoy|n ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a cache pool.
lvcreate--typecache-pool-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -H|--cache ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a thin LV in a thin pool.
lvcreate-V|--virtualsizeSize[m|UNIT] --thinpoolLVVG
[ --typethin ] (implied)
[ -T|--thin ]
[ COMMON_OPTIONS ]
—
Create a thin LV that is a snapshot of an existing thin LV.
lvcreate-s|--snapshotLV1
[ --typethin ] (implied)
[ COMMON_OPTIONS ]
LV1 types: thin
—
Create a thin LV that is a snapshot of an external origin LV.
lvcreate--typethin--thinpoolLVLV
[ -T|--thin ]
[ COMMON_OPTIONS ]
—
Create a LV that returns VDO when used.
lvcreate--typevdo-L|--sizeSize[m|UNIT] VG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -V|--virtualsizeSize[m|UNIT] ]
[ --vdo ]
[ --vdopoolLV_new ]
[ --compressiony|n ]
[ --deduplicationy|n ]
[ --vdosettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach the specified cachepool
which converts the new LV to type cache.
lvcreate--typecache-L|--sizeSize[m|UNIT]
--cachepoolLVVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -H|--cache ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ --poolmetadatasizeSize[m|UNIT] ]
[ --poolmetadatasparey|n ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach the specified cachevol
which converts the new LV to type cache.
lvcreate--typecache-L|--sizeSize[m|UNIT]
--cachevolLVVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach a cachevol created from
the specified cache device, which converts the
new LV to type cache.
lvcreate--typecache-L|--sizeSize[m|UNIT]
--cachedevicePVVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ -c|--chunksizeSize[k|UNIT] ]
[ --cachesizeSize[m|UNIT] ]
[ --cachemodewritethrough|writeback|passthrough ]
[ --cachepolicyString ]
[ --cachesettingsString ]
[ --cachemetadataformatauto|1|2 ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach the specified cachevol
which converts the new LV to type writecache.
lvcreate--typewritecache-L|--sizeSize[m|UNIT]
--cachevolLVVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ --cachesettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Create a new LV, then attach a cachevol created from
the specified cache device, which converts the
new LV to type writecache.
lvcreate--typewritecache-L|--sizeSize[m|UNIT]
--cachedevicePVVG
[ -l|--extentsNumber[PERCENT] ]
[ -i|--stripesNumber ]
[ -I|--stripesizeSize[k|UNIT] ]
[ --cachesizeSize[m|UNIT] ]
[ --cachesettingsString ]
[ COMMON_OPTIONS ]
[ PV ... ]
—
Common options for command:
[ -a|--activatey|n|ay ]
[ -A|--autobackupy|n ]
[ -C|--contiguousy|n ]
[ -K|--ignoreactivationskip ]
[ -j|--majorNumber ]
[ -n|--nameString ]
[ -p|--permissionrw|r ]
[ -M|--persistenty|n ]
[ -r|--readaheadauto|none|Number ]
[ -k|--setactivationskipy|n ]
[ -W|--wipesignaturesy|n ]
[ -Z|--zeroy|n ]
[ --addtagTag ]
[ --alloccontiguous|cling|cling_by_tags|normal|anywhere|inherit ]
[ --ignoremonitoring ]
[ --metadataprofileString ]
[ --minorNumber ]
[ --monitory|n ]
[ --nosync ]
[ --noudevsync ]
[ --reportformatbasic|json|json_std ]
[ --setautoactivationy|n ]
Common options for lvm:
[ -d|--debug ]
[ -h|--help ]
[ -q|--quiet ]
[ -t|--test ]
[ -v|--verbose ]
[ -y|--yes ]
[ --commandprofileString ]
[ --configString ]
[ --devicesPV ]
[ --devicesfileString ]
[ --driverloadedy|n ]
[ --journalString ]
[ --lockoptString ]
[ --longhelp ]
[ --nohints ]
[ --nolocking ]
[ --profileString ]
[ --version ]
Variables
VG Volume Group name. See lvm(8) for valid names. For lvcreate, the required VG positional arg may be omitted when the VG name is included in another option, e.g. --name VG/LV. LV Logical Volume name. See lvm(8) for valid names. An LV positional arg generally includes the VG name and LV name, e.g. VG/LV. LV1 indicates the LV must have a specific type, where the accepted LV types are listed. (raid represents raid<N> type). PV Physical Volume name, a device path under /dev. For commands managing physical extents, a PV po‐ sitional arg generally accepts a suffix indicating a range (or multiple ranges) of physical ex‐ tents (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: b|B is bytes, s|S is sectors of 512 bytes, k|K is KiB, m|M is MiB, g|G is GiB, t|T is TiB, p|P is PiB, e|E is EiB. (This should not be confused with the output control --units, where capital letters mean multiple of 1000.)
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