# man > LVCREATE(8)

[_LVCREATE_(8)](https://www.chedong.com/phpMan.php/man/LVCREATE/8/markdown)                            System Manager's Manual                           [_LVCREATE_(8)](https://www.chedong.com/phpMan.php/man/LVCREATE/8/markdown)

## NAME
       lvcreate — Create a logical volume

## SYNOPSIS
       **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**
           **--devices _**PV_
           **--devicesfile _**String_
           **--discards passdown**|**nopassdown**|**ignore**
           **--driverloaded y**|**n**
           **--errorwhenfull y**|**n**
        **-l**|**--extents _**Number_[PERCENT]
        **-h**|**--help**
        **-K**|**--ignoreactivationskip**
           **--ignoremonitoring**
           **--journal _**String_
           **--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_
           **--nohints**
           **--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**
           **--setautoactivation 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**|**raid**|**mirror**|**thin**|**thin-pool**|**vdo**|**vdo-pool**|**cache**|**cache-pool**|
### writecache
           **--vdo**
           **--vdopool _**LV_
           **--vdosettings _**String_
        **-v**|**--verbose**
           **--version**
        **-V**|**--virtualsize _**Size_[m|UNIT]
        **-W**|**--wipesignatures y**|**n**
        **-y**|**--yes**
        **-Z**|**--zero y**|**n**

## 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 extend‐
       ed  with  other  PVs  ([**vgextend**(8)](https://www.chedong.com/phpMan.php/man/vgextend/8/markdown)),  or existing LVs can be reduced or removed ([**lvremove**(8)](https://www.chedong.com/phpMan.php/man/lvremove/8/markdown),
       [**lvreduce**(8)](https://www.chedong.com/phpMan.php/man/lvreduce/8/markdown)).

       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 cre‐
       ated.

       RAID LVs can be created by specifying an LV type when creating the LV (see [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown)).  Dif‐
       ferent RAID levels require different numbers of unique PVs be available in the VG for alloca‐
       tion.

       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)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) and [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown)). 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)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown)).

### Usage notes
       In the usage section below, **--size _**Size_ can be replaced with **--extents _**Number_.  See  descrip‐
       tions 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
       Create a linear LV.

       **lvcreate -L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type linear **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a striped LV.

       **lvcreate -i**|**--stripes _**Number_ **-L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type striped **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a raid1 or mirror LV.

       **lvcreate -m**|**--mirrors _**Number_ **-L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type raid1**|**mirror **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-m**|**--mirrors _**Number_ ]
           [ **-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_
           [ **--type raid10 **] (implied)
           [ **-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_
           [ **--type snapshot **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a thin pool.

       **lvcreate --type thin-pool -L**|**--size _**Size_[m|UNIT] _VG_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--thinpool _**LV_new_ ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare y**|**n **]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a cache pool.

       **lvcreate --type cache-pool -L**|**--size _**Size_[m|UNIT] _VG_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-H**|**--cache **]
           [ **-c**|**--chunksize _**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_ ... ]

       —

       Create a thin LV in a thin pool.

       **lvcreate -V**|**--virtualsize _**Size_[m|UNIT] **--thinpool _**LV_ _VG_
           [ **--type thin **] (implied)
           [ **-T**|**--thin **]
           [ COMMON_OPTIONS ]

       —

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

       **lvcreate -s**|**--snapshot _**LV1_
           [ **--type thin **] (implied)
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       **lvcreate --type thin --thinpool _**LV_ _LV_
           [ **-T**|**--thin **]
           [ COMMON_OPTIONS ]

       —

       Create a LV that returns VDO when used.

       **lvcreate --type vdo -L**|**--size _**Size_[m|UNIT] _VG_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-V**|**--virtualsize _**Size_[m|UNIT] ]
           [    **--vdo **]
           [    **--vdopool _**LV_new_ ]
           [    **--compression y**|**n **]
           [    **--deduplication y**|**n **]
           [    **--vdosettings _**String_ ]
           [ 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_ _VG_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-H**|**--cache **]
           [ **-c**|**--chunksize _**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_ ... ]

       —

       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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-c**|**--chunksize _**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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--cachesize _**Size_[m|UNIT] ]
           [    **--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 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 **]
           [    **--setautoactivation y**|**n **]

       Common options for lvm:
           [ **-d**|**--debug **]
           [ **-h**|**--help **]
           [ **-q**|**--quiet **]
           [ **-t**|**--test **]
           [ **-v**|**--verbose **]
           [ **-y**|**--yes **]
           [    **--commandprofile _**String_ ]
           [    **--config _**String_ ]
           [    **--devices _**PV_ ]
           [    **--devicesfile _**String_ ]
           [    **--driverloaded y**|**n **]
           [    **--journal _**String_ ]
           [    **--lockopt _**String_ ]
           [    **--longhelp **]
           [    **--nohints **]
           [    **--nolocking **]
           [    **--profile _**String_ ]
           [    **--version **]

## OPTIONS


### -a --activate y
              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 ac‐
              tive.  If autoactivation **ay **is used, the LV is only activated if it matches an item in
              [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **activation/auto_activation_volume_list**.  **ay **implies --zero n and  --wipes‐
              ignatures n.  See [**lvmlockd**(8)](https://www.chedong.com/phpMan.php/man/lvmlockd/8/markdown) 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)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown) 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 overridden 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)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown) for more information about allo‐
              cation.

### -A --autobackup y
              Specifies if metadata should be backed up automatically after a change.  Enabling this
              is strongly advised! See [**vgcfgbackup**(8)](https://www.chedong.com/phpMan.php/man/vgcfgbackup/8/markdown) 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)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown) 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 **consid‐
              ers 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 for‐
              warded to the origin LV; additionally, write hits cause cache block  invalidates.  See
              [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown) for more information.

       **--cachepolicy _**String_
              Specifies the cache policy for a cache LV.  See [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown) for more information.

       **--cachepool _**LV_
              The name of a cache pool.

       **--cachesettings _**String_
              Specifies tunable kernel options for dm-cache or dm-writecache LVs.  Use the form 'op‐
              tion=value'  or  'option1=value option2=value', or repeat --cachesettings for each op‐
              tion being set.  These settings override the default kernel behaviors which are usual‐
              ly 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)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown) for more information.

       **--cachesize _**Size_[m|UNIT]
              The size of cache to use.

       **--cachevol _**LV_
              The name of a cache volume.

### -c --chunksize _
              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)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) and [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown)
              for more information.

       **--commandprofile _**String_
              The command profile to use for command configuration.  See [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) for more infor‐
              mation about profiles.

       **--compression y**|**n**
              Controls  whether compression is enabled or disable for VDO volume.  See [**lvmvdo**(7)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown) for
              more information about VDO usage.

       **--config _**String_
              Config settings for the command. These override [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) settings.  The String  arg
              uses the same format as [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown), or may use section/field syntax.  See [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown)
              for more information about config.

### -C --contiguous y
              Sets or resets the contiguous allocation policy for LVs.  Default is no contiguous al‐
              location based on a next free principle.  It is only possible to change a non-contigu‐
              ous 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)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown)
              for more information about VDO usage.

       **--devices _**PV_
              Restricts  the  devices  that  are visible and accessible to the command.  Devices not
              listed will appear to be missing. This option can be repeated, or accepts a comma sep‐
              arated list of devices. This overrides the devices file.

       **--devicesfile _**String_
              A file listing devices that LVM should use.  The file must exist in  _/etc/lvm/devices/_
              and  is  managed  with  the [**lvmdevices**(8)](https://www.chedong.com/phpMan.php/man/lvmdevices/8/markdown) command.  This overrides the [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **de‐**
              **vices/devicesfile **and **devices/use_devicesfile **settings.

       **--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  dis‐
              cards to the underlying device.  See [**lvmthin**(7)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) for more information.

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

       **--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 af‐
              ter the timeout.  (Also see dm-thin-pool kernel module option no_space_timeout.)   See
              [**lvmthin**(7)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) for more information.

### -l --extents _
              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 num‐
              ber 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.

       **--journal _**String_
              Record information in the systemd journal.  This information is in addition to  infor‐
              mation 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.

       **--lockopt _**String_
              Used to pass options for special cases to lvmlockd.  See [**lvmlockd**(8)](https://www.chedong.com/phpMan.php/man/lvmlockd/8/markdown) for more informa‐
              tion.

### --longhelp
              Display long help text.

### -j --major _
              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  unbound‐
              ed.  See [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown) for more information.

       **--metadataprofile _**String_
              The  metadata  profile to use for command configuration.  See [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) for more in‐
              formation 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  unbound‐
              ed.  See [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown) 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 _
              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**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **global/mirror_segtype_default **and global/raid10_segtype_default to config‐
              ure  the  default  types.  See the --nosync option for avoiding initial image synchro‐
              nization.  See [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown) 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)](https://www.chedong.com/phpMan.php/man/dmeventd/8/markdown) for more information.

### -n --name _
              Specifies the name of a new LV.  When unspecified, a default name of "lvol#" is gener‐
              ated, 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 appropriate.

### --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 syn‐
              chronization. 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  in‐
              tensive  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)  be‐
              ing 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 pari‐
              ty 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
              Set access permission to read only **r **or read and write **rw**.

### -M --persistent y
              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 al‐
              so 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 in‐
              to 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
              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  of  each raid or mirror synchronization region.  [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **activation/raid_re‐**
              **gion_size **can be used to configure a default.

       **--reportformat basic**|**json**
              Overrides current output format for reports which  is  defined  globally  by  the  re‐
              port/output_format  setting in [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown).  **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)](https://www.chedong.com/phpMan.php/man/lvmreport/7/markdown) for more information.

### -k --setactivationskip y
              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.

       **--setautoactivation y**|**n**
              Set  the  autoactivation property on a VG or LV.  Display the property with vgs or lvs
              "-o autoactivation".  When the autoactivation property is disabled, the VG or LV  will
              not  be activated by a command doing autoactivation (vgchange, lvchange, or pvscan us‐
              ing -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 en‐
              abled on a VG, autoactivation can be disabled for individual LVs.

### -L --size _
              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  op‐
              tion  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 creat‐
              ed  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)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) for more information about LVM thin provisioning.  COW snapshots are creat‐
              ed  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 expect‐
              ed;  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 avail‐
              able 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 _
              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 com‐
              mand.  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)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **allocation/raid_stripe_all_devices**.

### -I --stripesize _
              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 read‐
              ing 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)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) for more information about LVM thin pro‐
              visioning.

       **--thinpool _**LV_
              The name of a thin pool LV.

       **--type linear**|**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 per‐
              formance (**raid**<N>, **mirror**, **striped**, **linear**) see  [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown).   For  thin  provisioning
              (**thin**,  **thin-pool**)  see  [**lvmthin**(7)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown).   For performance caching (**cache**, **cache-pool**) see
              [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown).  For copy-on-write snapshots (**snapshot**) see usage definitions.   For  VDO
              (**vdo**)  see  [**lvmvdo**(7)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown).  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)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown) for more in‐
              formation about VDO usage.

       **--vdopool _**LV_
              The name of a VDO pool LV.  See [**lvmvdo**(7)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown) for more information about VDO usage.

       **--vdosettings _**String_
              Specifies tunable VDO options for VDO  LVs.   Use  the  form  'option=value'  or  'op‐
              tion1=value  option2=value', or repeat --vdosettings for each option being set.  These
              settings override the default VDO behaviors.  To remove vdosettings and revert to  the
              default  VDO  behaviors, use --vdosettings 'default'.  See [**lvmvdo**(7)](https://www.chedong.com/phpMan.php/man/lvmvdo/7/markdown) for more informa‐
              tion.

### -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 _
              The virtual size of a new thin LV.  See [**lvmthin**(7)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown) for more information about LVM thin
              provisioning.  Using virtual size (-V) and actual size (-L) together creates a  sparse
              LV.   [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown)  **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
              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)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown) **allocation/wipe_signa‐**
              **tures_when_zeroing_new_lvs**.    If   blkid   wiping   is   used   ([**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown)  **alloca‐**
              **tion/use_blkid_wiping**) and LVM  is  compiled  with  blkid  wiping  support,  then  the
              [blkid(8)](https://www.chedong.com/phpMan.php/man/blkid/8/markdown) 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
              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
       _VG_     Volume Group name.  See [**lvm**(8)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown) for valid names.  For lvcreate, the required  VG  posi‐
              tional  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)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown) for valid names.  An LV positional arg generally  in‐
              cludes 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 ex‐
              tents, 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: **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.)

## ENVIRONMENT VARIABLES
       See [**lvm**(8)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown) for information about environment variables used by lvm.  For example, LVM_VG_NAME
       can generally be substituted for a required VG parameter.

## ADVANCED USAGE
       Alternate command forms, advanced command usage, and listing of all  valid  syntax  for  com‐
       pleteness.

       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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-m**|**--mirrors _**Number_ ]
           [ **-R**|**--regionsize _**Size_[m|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 thin pool.

       **lvcreate -T**|**--thin -L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type thin-pool **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare y**|**n **]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a thin pool named in --thinpool.

       **lvcreate -L**|**--size _**Size_[m|UNIT] **--thinpool _**LV_new_ _VG_
           [ **--type thin-pool **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare 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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-H**|**--cache **]
           [ **-c**|**--chunksize _**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_ ... ]

       —

       Create a thin LV in a thin pool.

       **lvcreate --type thin -V**|**--virtualsize _**Size_[m|UNIT]
             **--thinpool _**LV_ _VG_
           [ **-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 --type thin -V**|**--virtualsize _**Size_[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**|**--virtualsize _**Size_[m|UNIT] _LV1_
           [ **--type thin **] (implied)
           [ **-T**|**--thin **]
           [ COMMON_OPTIONS ]

           LV1 types: thinpool

       —

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

       **lvcreate --type thin _**LV1_
           [ **-T**|**--thin **]
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       **lvcreate -T**|**--thin _**LV1_
           [ **--type thin **] (implied)
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       **lvcreate -s**|**--snapshot --thinpool _**LV_ _LV_
           [ **--type thin **] (implied)
           [ COMMON_OPTIONS ]

       —

       Create a VDO LV with VDO pool.

       **lvcreate --vdo -L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type vdo **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-V**|**--virtualsize _**Size_[m|UNIT] ]
           [    **--vdopool _**LV_new_ ]
           [    **--compression y**|**n **]
           [    **--deduplication y**|**n **]
           [    **--vdosettings _**String_ ]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

       Create a VDO LV with VDO pool.

       **lvcreate --vdopool _**LV_new_ **-L**|**--size _**Size_[m|UNIT] _VG_
           [ **--type vdo **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-V**|**--virtualsize _**Size_[m|UNIT] ]
           [    **--compression y**|**n **]
           [    **--deduplication y**|**n **]
           [    **--vdosettings _**String_ ]
           [ 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_ _VG_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare y**|**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**|**--virtualsize _**Size_[m|UNIT] **-L**|**--size _**Size_[m|UNIT]
             **--thinpool _**LV_new_ _VG_
           [ **--type thin **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare 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] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare 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 -T**|**--thin -V**|**--virtualsize _**Size_[m|UNIT]
             **-L**|**--size _**Size_[m|UNIT] _VG_|_LV_new_
           [ **--type thin **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare y**|**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**|**--size _**Size_[m|UNIT] **-V**|**--virtualsize _**Size_[m|UNIT] _VG_
           [ **--type thin**|**snapshot **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-s**|**--snapshot **]
           [ **-T**|**--thin **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--discards passdown**|**nopassdown**|**ignore **]
           [    **--errorwhenfull y**|**n **]
           [    **--poolmetadatasize _**Size_[m|UNIT] ]
           [    **--poolmetadataspare y**|**n **]
           [ COMMON_OPTIONS ]
           [ _PV_ ... ]

       —

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

       **lvcreate -L**|**--size _**Size_[m|UNIT] **--cachepool _**LV_ _VG_
           [ **--type cache **] (implied)
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-H**|**--cache **]
           [ **-c**|**--chunksize _**Size_[k|UNIT] ]
           [    **--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] _LV1_
           [ **-l**|**--extents _**Number_[PERCENT] ]
           [ **-i**|**--stripes _**Number_ ]
           [ **-I**|**--stripesize _**Size_[k|UNIT] ]
           [ **-H**|**--cache **]
           [ **-c**|**--chunksize _**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_ ... ]

           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**|**--size _**Size_[m|UNIT] _LV_
           [ **--type cache **] (implied)
           [ **-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
       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  to‐
       tal 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 -V 1T --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
       [**lvm**(8)](https://www.chedong.com/phpMan.php/man/lvm/8/markdown), [**lvm.conf**(5)](https://www.chedong.com/phpMan.php/man/lvm.conf/5/markdown), [**lvmconfig**(8)](https://www.chedong.com/phpMan.php/man/lvmconfig/8/markdown), [**lvmdevices**(8)](https://www.chedong.com/phpMan.php/man/lvmdevices/8/markdown),

       [**pvchange**(8)](https://www.chedong.com/phpMan.php/man/pvchange/8/markdown), [**pvck**(8)](https://www.chedong.com/phpMan.php/man/pvck/8/markdown), [**pvcreate**(8)](https://www.chedong.com/phpMan.php/man/pvcreate/8/markdown), [**pvdisplay**(8)](https://www.chedong.com/phpMan.php/man/pvdisplay/8/markdown), [**pvmove**(8)](https://www.chedong.com/phpMan.php/man/pvmove/8/markdown), [**pvremove**(8)](https://www.chedong.com/phpMan.php/man/pvremove/8/markdown), [**pvresize**(8)](https://www.chedong.com/phpMan.php/man/pvresize/8/markdown), [**pvs**(8)](https://www.chedong.com/phpMan.php/man/pvs/8/markdown),
       [**pvscan**(8)](https://www.chedong.com/phpMan.php/man/pvscan/8/markdown),

       [**vgcfgbackup**(8)](https://www.chedong.com/phpMan.php/man/vgcfgbackup/8/markdown), [**vgcfgrestore**(8)](https://www.chedong.com/phpMan.php/man/vgcfgrestore/8/markdown), [**vgchange**(8)](https://www.chedong.com/phpMan.php/man/vgchange/8/markdown), [**vgck**(8)](https://www.chedong.com/phpMan.php/man/vgck/8/markdown), [**vgcreate**(8)](https://www.chedong.com/phpMan.php/man/vgcreate/8/markdown), [**vgconvert**(8)](https://www.chedong.com/phpMan.php/man/vgconvert/8/markdown),
       [**vgdisplay**(8)](https://www.chedong.com/phpMan.php/man/vgdisplay/8/markdown), [**vgexport**(8)](https://www.chedong.com/phpMan.php/man/vgexport/8/markdown), [**vgextend**(8)](https://www.chedong.com/phpMan.php/man/vgextend/8/markdown), [**vgimport**(8)](https://www.chedong.com/phpMan.php/man/vgimport/8/markdown), [**vgimportclone**(8)](https://www.chedong.com/phpMan.php/man/vgimportclone/8/markdown), [**vgimportdevices**(8)](https://www.chedong.com/phpMan.php/man/vgimportdevices/8/markdown),
       [**vgmerge**(8)](https://www.chedong.com/phpMan.php/man/vgmerge/8/markdown), [**vgmknodes**(8)](https://www.chedong.com/phpMan.php/man/vgmknodes/8/markdown), [**vgreduce**(8)](https://www.chedong.com/phpMan.php/man/vgreduce/8/markdown), [**vgremove**(8)](https://www.chedong.com/phpMan.php/man/vgremove/8/markdown), [**vgrename**(8)](https://www.chedong.com/phpMan.php/man/vgrename/8/markdown), [**vgs**(8)](https://www.chedong.com/phpMan.php/man/vgs/8/markdown), [**vgscan**(8)](https://www.chedong.com/phpMan.php/man/vgscan/8/markdown),
       [**vgsplit**(8)](https://www.chedong.com/phpMan.php/man/vgsplit/8/markdown),

       [**lvcreate**(8)](https://www.chedong.com/phpMan.php/man/lvcreate/8/markdown), [**lvchange**(8)](https://www.chedong.com/phpMan.php/man/lvchange/8/markdown), [**lvconvert**(8)](https://www.chedong.com/phpMan.php/man/lvconvert/8/markdown), [**lvdisplay**(8)](https://www.chedong.com/phpMan.php/man/lvdisplay/8/markdown), [**lvextend**(8)](https://www.chedong.com/phpMan.php/man/lvextend/8/markdown), [**lvreduce**(8)](https://www.chedong.com/phpMan.php/man/lvreduce/8/markdown), [**lvremove**(8)](https://www.chedong.com/phpMan.php/man/lvremove/8/markdown),
       [**lvrename**(8)](https://www.chedong.com/phpMan.php/man/lvrename/8/markdown), [**lvresize**(8)](https://www.chedong.com/phpMan.php/man/lvresize/8/markdown), [**lvs**(8)](https://www.chedong.com/phpMan.php/man/lvs/8/markdown), [**lvscan**(8)](https://www.chedong.com/phpMan.php/man/lvscan/8/markdown),

       [**lvm-fullreport**(8)](https://www.chedong.com/phpMan.php/man/lvm-fullreport/8/markdown), [**lvm-lvpoll**(8)](https://www.chedong.com/phpMan.php/man/lvm-lvpoll/8/markdown), [**blkdeactivate**(8)](https://www.chedong.com/phpMan.php/man/blkdeactivate/8/markdown), [**lvmdump**(8)](https://www.chedong.com/phpMan.php/man/lvmdump/8/markdown),

       [**dmeventd**(8)](https://www.chedong.com/phpMan.php/man/dmeventd/8/markdown), [**lvmpolld**(8)](https://www.chedong.com/phpMan.php/man/lvmpolld/8/markdown), [**lvmlockd**(8)](https://www.chedong.com/phpMan.php/man/lvmlockd/8/markdown), [**lvmlockctl**(8)](https://www.chedong.com/phpMan.php/man/lvmlockctl/8/markdown), [**cmirrord**(8)](https://www.chedong.com/phpMan.php/man/cmirrord/8/markdown), [**lvmdbusd**(8)](https://www.chedong.com/phpMan.php/man/lvmdbusd/8/markdown), [**fsadm**(8)](https://www.chedong.com/phpMan.php/man/fsadm/8/markdown),

       [**lvmsystemid**(7)](https://www.chedong.com/phpMan.php/man/lvmsystemid/7/markdown), [**lvmreport**(7)](https://www.chedong.com/phpMan.php/man/lvmreport/7/markdown), [**lvmraid**(7)](https://www.chedong.com/phpMan.php/man/lvmraid/7/markdown), [**lvmthin**(7)](https://www.chedong.com/phpMan.php/man/lvmthin/7/markdown), [**lvmcache**(7)](https://www.chedong.com/phpMan.php/man/lvmcache/7/markdown)

Red Hat, Inc.                     LVM TOOLS [2.03.16(2)](https://www.chedong.com/phpMan.php/man/2.03.16/2/markdown) (2022-05-18)                      [_LVCREATE_(8)](https://www.chedong.com/phpMan.php/man/LVCREATE/8/markdown)