lvcreate(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | ADVANCED USAGE | EXAMPLES | SEE ALSO | COLOPHON

LVCREATE(8)              System Manager's Manual             LVCREATE(8)

NAME         top

       lvcreate - Create a logical volume

SYNOPSIS         top

       lvcreate option_args position_args
           [ option_args ]
           [ position_args ]

        -a|--activate y|n|ay
           --addtag Tag
           --alloc
       contiguous|cling|cling_by_tags|normal|anywhere|inherit
        -A|--autobackup y|n
        -H|--cache
           --cachedevice PV
           --cachemetadataformat auto|1|2
           --cachemode writethrough|writeback|passthrough
           --cachepolicy String
           --cachepool LV
           --cachesettings String
           --cachesize Size[m|UNIT]
           --cachevol LV
        -c|--chunksize Size[k|UNIT]
           --commandprofile String
           --compression y|n
           --config String
        -C|--contiguous y|n
        -d|--debug
           --deduplication y|n
           --discards passdown|nopassdown|ignore
           --driverloaded y|n
           --errorwhenfull y|n
        -l|--extents Number[PERCENT]
        -h|--help
        -K|--ignoreactivationskip
           --ignoremonitoring
           --lockopt String
           --longhelp
        -j|--major Number
           --[raid]maxrecoveryrate Size[k|UNIT]
           --metadataprofile String
           --minor Number
           --[raid]minrecoveryrate Size[k|UNIT]
           --mirrorlog core|disk
        -m|--mirrors Number
           --monitor y|n
        -n|--name String
           --nolocking
           --nosync
           --noudevsync
        -p|--permission rw|r
        -M|--persistent y|n
           --poolmetadatasize Size[m|UNIT]
           --poolmetadataspare y|n
           --profile String
        -q|--quiet
           --raidintegrity y|n
           --raidintegrityblocksize Number
           --raidintegritymode String
        -r|--readahead auto|none|Number
        -R|--regionsize Size[m|UNIT]
           --reportformat basic|json
        -k|--setactivationskip y|n
        -L|--size Size[m|UNIT]
        -s|--snapshot
        -i|--stripes Number
        -I|--stripesize Size[k|UNIT]
        -t|--test
        -T|--thin
           --thinpool LV
           --type
       linear|striped|snapshot|mirror|raid|thin|cache|vdo|thin-pool|cache-pool|vdo-pool
           --vdo
           --vdopool LV
        -v|--verbose
           --version
        -V|--virtualsize Size[m|UNIT]
        -W|--wipesignatures y|n
        -y|--yes
        -Z|--zero y|n

DESCRIPTION         top

       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 command 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 physical size. A cache LV is
       the combination of a standard LV with a cache pool, used to cache
       active portions 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)).

   Usage notes
       In the usage section below, --size Size can be replaced with
       --extents Number. 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 numeric suffix.

       In the usage section below, when creating a pool and the name is
       omitted the new LV pool name is generated 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.

USAGE         top

       Create a linear LV.

       lvcreate -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [    --type linear ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a striped LV (infers --type striped).

       lvcreate -i|--stripes Number -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a raid1 or mirror LV (infers --type raid1|mirror).

       lvcreate -m|--mirrors Number -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --mirrorlog core|disk ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a raid LV (a specific raid level must be used, e.g.
       raid1).

       lvcreate --type raid -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -m|--mirrors Number ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [    --raidintegrity y|n ]
           [    --raidintegritymode String ]
           [    --raidintegrityblocksize Number ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a raid10 LV.

       lvcreate -m|--mirrors Number -i|--stripes Number
             -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a COW snapshot LV of an origin LV.

       lvcreate -s|--snapshot -L|--size Size[m|UNIT] LV
           [ -l|--extents Number[PERCENT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --type snapshot ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin pool.

       lvcreate --type thin-pool -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --thinpool LV_new ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a cache pool.

       lvcreate --type cache-pool -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin LV in a thin pool (infers --type thin).

       lvcreate -V|--virtualsize Size[m|UNIT] --thinpool LV_thinpool VG
           [ -T|--thin ]
           [    --type thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV that is a snapshot of an existing thin LV
       (infers --type thin).

       lvcreate -s|--snapshot LV_thin
           [    --type thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV that is a snapshot of an external origin LV.

       lvcreate --type thin --thinpool LV_thinpool LV
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a LV that returns VDO when used.

       lvcreate --type vdo -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -V|--virtualsize Size[m|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --vdo ]
           [    --vdopool LV_new ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [ 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 --type thin -V|--virtualsize Size[m|UNIT]
             -L|--size Size[m|UNIT] --thinpool LV_new
           [ -l|--extents Number[PERCENT] ]
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a new LV, then attach the specified cachepool
       which converts the new LV to type cache.

       lvcreate --type cache -L|--size Size[m|UNIT]
             --cachepool LV_cachepool VG
           [ -l|--extents Number[PERCENT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a new LV, then attach the specified cachevol
       which converts the new LV to type cache.

       lvcreate --type cache -L|--size Size[m|UNIT]
             --cachevol LV VG
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|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 --type cache -L|--size Size[m|UNIT]
             --cachedevice PV VG
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [    --cachesize Size[m|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a new LV, then attach the specified cachevol
       which converts the new LV to type writecache.

       lvcreate --type writecache -L|--size Size[m|UNIT]
             --cachevol LV VG
           [ -l|--extents Number[PERCENT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --cachesettings String ]
           [ 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 --type writecache -L|--size Size[m|UNIT]
             --cachedevice PV VG
           [ -l|--extents Number[PERCENT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --cachesize Size[m|UNIT] ]
           [    --cachesettings String ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Common options for command:
           [ -a|--activate y|n|ay ]
           [ -A|--autobackup y|n ]
           [ -C|--contiguous y|n ]
           [ -K|--ignoreactivationskip ]
           [ -j|--major Number ]
           [ -n|--name String ]
           [ -p|--permission rw|r ]
           [ -M|--persistent y|n ]
           [ -r|--readahead auto|none|Number ]
           [ -k|--setactivationskip y|n ]
           [ -W|--wipesignatures y|n ]
           [ -Z|--zero y|n ]
           [    --addtag Tag ]
           [    --alloc
           contiguous|cling|cling_by_tags|normal|anywhere|inherit ]
           [    --ignoremonitoring ]
           [    --metadataprofile String ]
           [    --minor Number ]
           [    --monitor y|n ]
           [    --nosync ]
           [    --noudevsync ]
           [    --reportformat basic|json ]

       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 ]
           [    --nolocking ]
           [    --profile String ]
           [    --version ]

OPTIONS         top

       -a|--activate y|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 activation/auto_activation_volume_list.  ay
              implies --zero n and --wipesignatures n.  See lvmlockd(8)
              for more information about activation options for shared
              VGs.

       --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.

       -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.

       --cachedevice PV
              The name of a device to use for a cache.

       --cachemetadataformat auto|1|2
              Specifies the cache metadata format used by cache target.

       --cachemode writethrough|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.

       --cachepolicy String
              Specifies the cache policy for a cache LV.  See
              lvmcache(7) for more information.

       --cachepool LV
              The name of a cache pool.

       --cachesettings String
              Specifies tunable values for a cache LV in "Key = Value"
              form.  Repeat this option to specify multiple values.
              (The default values should usually be adequate.)  The
              special string value default switches settings back to
              their default kernel values and removes them from the list
              of settings stored in LVM metadata.  See lvmcache(7) for
              more information.

       --cachesize Size[m|UNIT]
              The size of cache to use.

       --cachevol LV
              The name of a cache volume.

       -c|--chunksize Size[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 4KiB
              and 512KiB and the default value is 4.  For a cache pool
              the value must be between 32KiB and 1GiB and the default
              value is 64.  For a thin pool the value must be between
              64KiB and 1GiB and the default value starts with 64 and
              scales up to fit the pool metadata size within 128MiB, if
              the pool metadata size is not specified.  The value must
              be a multiple of 64KiB.  See lvmthin(7) and lvmcache(7)
              for more information.

       --commandprofile String
              The command profile to use for command configuration.  See
              lvm.conf(5) for more information about profiles.

       --compression y|n
              Controls whether compression is enabled or disable for VDO
              volume.  See lvmvdo(7) for more information about VDO
              usage.

       --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.

       -C|--contiguous y|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).

       --deduplication y|n
              Controls whether deduplication is enabled or disable for
              VDO volume.  See lvmvdo(7) for more information about VDO
              usage.

       --discards passdown|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 itself 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.

       --driverloaded y|n
              If set to no, the command will not attempt to use device-
              mapper.  For testing and debugging.

       --errorwhenfull y|n
              Specifies thin pool behavior when data space is exhausted.
              When yes, device-mapper will immediately return an error
              when a thin pool is full and an I/O request requires
              space.  When no, device-mapper will queue these I/O
              requests for a period of time to allow the thin pool to be
              extended.  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|--extents Number[PERCENT]
              Specifies the size of the new LV in logical extents.  The
              --size and --extents options are alternate 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 logical 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 activated.

       --ignoremonitoring
              Do not interact with dmeventd unless --monitor is
              specified.  Do not use this if dmeventd is already
              monitoring a device.

       --lockopt String
              Used to pass options for special cases to lvmlockd.  See
              lvmlockd(8) for more information.

       --longhelp
              Display long help text.

       -j|--major Number
              Sets the major number of an LV block device.

       --[raid]maxrecoveryrate Size[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.

       --metadataprofile String
              The metadata profile to use for command configuration.
              See lvm.conf(5) for more information about profiles.

       --minor Number
              Sets the minor number of an LV block device.

       --[raid]minrecoveryrate Size[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.

       --mirrorlog core|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 separate 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|--mirrors Number
              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 mirroring 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 global/mirror_segtype_default and
              global/raid10_segtype_default to configure the default
              types.  See the --nosync option for avoiding initial image
              synchronization.  See lvmraid(7) for more information.

       --monitor y|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 reponse to specific
              events.  See dmeventd(8) for more information.

       -n|--name String
              Specifies the name of a new LV.  When unspecified, a
              default name of "lvol#" is generated, where # is a number
              generated by LVM.

       --nolocking
              Disable locking.

       --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 original 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 mirror/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 reconstruct 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 synchronisation. The process will not wait
              for notification from udev. It will continue 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|--permission rw|r
              Set access permission to read only r or read and write rw.

       -M|--persistent y|n
              When yes, makes the specified minor number persistent.

       --poolmetadatasize Size[m|UNIT]
              Specifies the size of the new pool metadata LV.

       --poolmetadataspare y|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.

       --profile String
              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'.

       --raidintegrity y|n
              Enable or disable data integrity checksums for raid
              images.

       --raidintegrityblocksize Number
              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.

       --raidintegritymode String
              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 detected. 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 scattered write optimization.

       -r|--readahead auto|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|--regionsize Size[m|UNIT]
              Size of each raid or mirror synchronization region.
              lvm.conf activation/raid_region_size can be used to
              configure a default.

       --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.

       -k|--setactivationskip y|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.

       -L|--size Size[m|UNIT]
              Specifies the size of the new LV.  The --size and
              --extents options are alternate methods of specifying
              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 extend the size to
              avoid running out of space.

       -i|--stripes Number
              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 devices 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
              allocation/raid_stripe_all_devices.

       -I|--stripesize Size[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 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.

       -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.

       --thinpool LV
              The name of a thin pool LV.

       --type
              linear|striped|snapshot|mirror|raid|thin|cache|vdo|thin-pool|cache-pool|vdo-pool
              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 option 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.

       --vdopool LV
              The name of a VDO pool LV.  See lvmvdo(7) for more
              information about VDO usage.

       -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|--virtualsize Size[m|UNIT]
              The virtual size of a new thin LV.  See lvmthin(7) for
              more information about LVM thin provisioning.  Using
              virtual size (-V) and actual size (-L) together creates a
              sparse LV.  lvm.conf 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 virtual 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|--wipesignatures y|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
              allocation/wipe_signatures_when_zeroing_new_lvs.  If blkid
              wiping is used (lvm.conf 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|--zero y|n
              Controls zeroing of the first 4KiB 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.

VARIABLES         top

       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.  LV followed by _<type> indicates that an LV
              of the given type is required. (raid represents raid<N>
              type)

       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.)

ENVIRONMENT VARIABLES         top

       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.

ADVANCED USAGE         top

       Alternate command forms, advanced command usage, and listing of
       all valid syntax for completeness.

       Create an LV that returns errors when used.

       lvcreate --type error -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ COMMON_OPTIONS ]
       -

       Create an LV that returns zeros when read.

       lvcreate --type zero -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ COMMON_OPTIONS ]
       -

       Create a linear LV.

       lvcreate --type linear -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a striped LV (also see lvcreate --stripes).

       lvcreate --type striped -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a mirror LV (also see --type raid1).

       lvcreate --type mirror -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -m|--mirrors Number ]
           [ -R|--regionsize Size[m|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --mirrorlog core|disk ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a COW snapshot LV of an origin LV
       (also see --snapshot).

       lvcreate --type snapshot -L|--size Size[m|UNIT] LV
           [ -l|--extents Number[PERCENT] ]
           [ -s|--snapshot ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a sparse COW snapshot LV of a virtual origin LV
       (also see --snapshot).

       lvcreate --type snapshot -L|--size Size[m|UNIT]
             -V|--virtualsize Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -s|--snapshot ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a sparse COW snapshot LV of a virtual origin LV.

       lvcreate -s|--snapshot -L|--size Size[m|UNIT]
             -V|--virtualsize Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --type snapshot ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin pool (infers --type thin-pool).

       lvcreate -T|--thin -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --type thin-pool ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin pool named by the --thinpool arg
       (infers --type thin-pool).

       lvcreate -L|--size Size[m|UNIT] --thinpool LV_new VG
           [ -l|--extents Number[PERCENT] ]
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --type thin-pool ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a cache pool named by the --cachepool arg
       (variant, uses --cachepool in place of --name).

       lvcreate --type cache-pool -L|--size Size[m|UNIT]
             --cachepool LV_new VG
           [ -l|--extents Number[PERCENT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin LV in a thin pool.

       lvcreate --type thin -V|--virtualsize Size[m|UNIT]
             --thinpool LV_thinpool VG
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV in a thin pool named in the first arg
       (variant, also see --thinpool for naming pool).

       lvcreate --type thin -V|--virtualsize Size[m|UNIT] LV_thinpool
           [ -T|--thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV in the thin pool named in the first arg
       (variant, infers --type thin, also see --thinpool for
       naming pool.)

       lvcreate -V|--virtualsize Size[m|UNIT] LV_thinpool
           [ -T|--thin ]
           [    --type thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV that is a snapshot of an existing thin LV.

       lvcreate --type thin LV_thin
           [ -T|--thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV that is a snapshot of an existing thin LV
       (infers --type thin).

       lvcreate -T|--thin LV_thin
           [    --type thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a thin LV that is a snapshot of an external origin LV
       (infers --type thin).

       lvcreate -s|--snapshot --thinpool LV_thinpool LV
           [    --type thin ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
       -

       Create a VDO LV with VDO pool.

       lvcreate --vdo -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -V|--virtualsize Size[m|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --vdopool LV_new ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a VDO LV with VDO pool.

       lvcreate --vdopool LV_new -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -V|--virtualsize Size[m|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --vdo ]
           [    --type vdo ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [ 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
       (variant, infers --type thin).

       lvcreate -V|--virtualsize Size[m|UNIT] -L|--size Size[m|UNIT]
             --thinpool LV_new
           [ -l|--extents Number[PERCENT] ]
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ 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
       (variant, infers --type thin).

       lvcreate -V|--virtualsize Size[m|UNIT] -L|--size Size[m|UNIT]
             --thinpool LV_new VG
           [ -l|--extents Number[PERCENT] ]
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|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 --type thin -V|--virtualsize Size[m|UNIT]
             -L|--size Size[m|UNIT] VG|LV_new
           [ -l|--extents Number[PERCENT] ]
           [ -T|--thin ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|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 (variant, infers --type thin).

       lvcreate -T|--thin -V|--virtualsize Size[m|UNIT]
             -L|--size Size[m|UNIT] VG|LV_new
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a thin LV, first creating a thin pool for it
       (infers --type thin).
       Create a sparse snapshot of a virtual origin LV
       (infers --type snapshot).
       Chooses --type thin or --type snapshot according to
       config setting sparse_segtype_default.

       lvcreate -L|--size Size[m|UNIT] -V|--virtualsize Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -s|--snapshot ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --type snapshot ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --discards passdown|nopassdown|ignore ]
           [    --errorwhenfull y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Create a new LV, then attach the specified cachepool
       which converts the new LV to type cache
       (variant, infers --type cache.)

       lvcreate -L|--size Size[m|UNIT] --cachepool LV_cachepool VG
           [ -l|--extents Number[PERCENT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --type cache ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|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 --type cache -L|--size Size[m|UNIT] LV_cachepool
           [ -l|--extents Number[PERCENT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       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|--size Size[m|UNIT] LV
           [ -l|--extents Number[PERCENT] ]
           [ -c|--chunksize Size[k|UNIT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

EXAMPLES         top

       Create a striped LV with 3 stripes, a stripe size of 8KiB and a
       size of 100MiB.  The LV name is chosen by lvcreate.
       lvcreate -i 3 -I 8 -L 100m vg00

       Create a raid1 LV with two images, and a useable 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 --type raid1 -m1 -L 500m -n mylv vg00

       Create a mirror LV with two images, and a useable size of 500
       MiB.  This operation requires three devices: two for mirror
       images and one for a disk log.
       lvcreate --type mirror -m1 -L 500m -n mylv vg00

       Create a mirror LV with 2 images, and a useable size of 500 MiB.
       This operation requires 2 devices because the log is in memory.
       lvcreate --type mirror -m1 --mirrorlog core -L 500m -n mylv vg00

       Create a copy-on-write snapshot of an LV:
       lvcreate --snapshot --size 100m --name mysnap vg00/mylv

       Create a copy-on-write snapshot with a size sufficient for
       overwriting 20% of the size of the original LV.
       lvcreate -s -l 20%ORIGIN -n mysnap vg00/mylv

       Create a sparse LV with 1TiB of virtual space, and actual space
       just under 100MiB.
       lvcreate --snapshot --virtualsize 1t --size 100m --name mylv vg00

       Create a linear LV with a usable size of 64MiB on specific
       physical extents.
       lvcreate -L 64m -n mylv vg00 /dev/sda:0-7 /dev/sdb:0-7

       Create a RAID5 LV with a usable size of 5GiB, 3 stripes, a stripe
       size of 64KiB, using a total of 4 devices (including one for
       parity).
       lvcreate --type raid5 -L 5G -i 3 -I 64 -n mylv vg00

       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 -i 7 must
       be used to get to the current maximum of 8 devices including
       parity for RaidLVs).
       lvcreate --config allocation/raid_stripe_all_devices=1
              --type raid5 -l 100%FREE -n mylv vg00

       Create RAID10 LV with a usable size of 5GiB, 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 --type raid10 -L 5G -i 2 -m 1 -n mylv vg00

       Create a 1TiB thin LV mythin, with 256GiB thinpool tpool0 in
       vg00.
       lvcreate --T --size 256G --name mythin vg00/tpool0

       Create a 1TiB thin LV, first creating a new thin pool for it,
       where the thin pool has 100MiB of space, uses 2 stripes, has a
       64KiB stripe size, and 256KiB chunk size.
       lvcreate --type thin --name mylv --thinpool mypool
              -V 1t -L 100m -i 2 -I 64 -c 256 vg00

       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 --name mysnap vg00/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 --name mysnap --thinpool mypool vg00/origin

       Create a cache pool from a fast physical device. The cache pool
       can then be used to cache an LV.
       lvcreate --type cache-pool -L 1G -n my_cpool vg00 /dev/fast1

       Create a cache LV, first creating a new origin LV on a slow
       physical device, then combining the new origin LV with an
       existing cache pool.
       lvcreate --type cache --cachepool my_cpool
              -L 100G -n mylv vg00 /dev/slow1

       Create a VDO LV vdo0 with VDOPoolLV size of 10GiB and name
       vpool1.
       lvcreate --vdo --size 10G --name vdo0 vg00/vpool1

SEE ALSO         top

       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) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8)
       lvmdbusd(8)

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

COLOPHON         top

       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, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
       This page was obtained from the tarball
       https://github.com/lvmteam/lvm2/archive/v2_03_10.tar.gz fetched
       from ⟨https://github.com/lvmteam/lvm2/releases⟩ on 2020-12-18.
       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 2.03.10(2) (2020-08-09)        LVCREATE(8)

Pages that refer to this page: lvmcache(7)lvmreport(7)lvmthin(7)lvmvdo(7)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)