# lvcreate

## 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_
            **-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 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 allo‐
           cate physical extents only from the specified PVs.
    
           lvcreate can also create snapshots of existing LVs, e.g. for back‐
           up 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 num‐
           bers 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  ac‐
           tive portions of the LV to improve performance.
    
           VDO LVs are also provisioned volumes from a VDO pool, and are cre‐
           ated  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 **--ex‐**
           **tents** _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" prefix
           for vdo-pools and a unique numeric suffix.
    
           Pool name can be specified together with _VG_  name  i.e.:  vg00/my‐
           thinpool.
    


## 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**]
               [ 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** |**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 possi‐
                  ble.  In some cases, creating an LV requires it to  be  ac‐
                  tive.   For  example,  COW snapshots of an active origin LV
                  can only be created in the active state (this does not  ap‐
                  ply  to  thin  snapshots).   The --zero option normally re‐
                  quires the LV to be active.  If autoactivation **ay** is  used,
                  the  LV  is  only  activated  if  it  matches  an  item  in
                  lvm.conf(5) **activation/auto_activation_volume_list**.  **ay** im‐
                  plies --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 overridden on the command line.  **nor‐**
                  **mal** 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  ex‐
                  isting PEs in the same stripe of the LV.  If there are suf‐
                  ficient  PEs  for  an  allocation,  but normal does not use
                  them, **anywhere** will use them even  if  it  reduces  perfor‐
                  mance, e.g. by placing two stripes on the same PV.  Option‐
                  al  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 af‐
                  ter  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  in‐
                  validates. 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 de‐
                  fault kernel values and removes them from the list of  set‐
                  tings stored in LVM metadata.  See lvmcache(7) for more in‐
                  formation.
    
           **--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 us‐
                  age.
    
           **--config** _String_
                  Config settings for the command. These override lvm.conf(5)
                  settings.   The  String  arg  uses  the  same   format   as
                  lvm.conf(5),   or   may   use  section/field  syntax.   See
                  lvm.conf(5) for more information about config.
    
           **-C** |**--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.
    
           **--devices** _PV_
                  Devices that the command can use. This option  can  be  re‐
                  peated  or  accepts a comma separated 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) command.  This overrides the lvm.conf(5)  **de‐**
                  **vices/devicesfile** and **devices/use_devicesfile** settings.
    
           **--discards passdown** |**nopassdown** |**ignore**
                  Specifies how the device-mapper thin pool layer in the ker‐
                  nel 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  informa‐
                  tion.
    
           **--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.  Er‐
                  rors are returned if no space is available after the  time‐
                  out.    (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 spec‐
                  ifying  size.   The  total  number of physical extents used
                  will be greater when redundant data is needed for RAID lev‐
                  els.  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 ex‐
                  pressed  as  a  percentage, the size defines an upper limit
                  for the number of logical extents in the new LV.  The  pre‐
                  cise  number of logical extents in the new LV is not deter‐
                  mined 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 speci‐
                  fied.  Do not use this if dmeventd is already monitoring  a
                  device.
    
           **--journal** _String_
                  Record  information  in the systemd journal.  This informa‐
                  tion is in addition to information enabled by the  lvm.conf
                  log/journal setting.  command: record information about the
                  command.   output:  record the default command output.  de‐
                  bug: record full command debugging.
    
           **--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 unbound‐
                  ed.  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 unbound‐
                  ed.  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  per‐
                  sistent  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 im‐
                  ages  of  the data, the original and one mirror image.  Op‐
                  tional 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)
                  **global/mirror_segtype_default** and global/raid10_segtype_de‐
                  fault to configure the default types.  See the --nosync op‐
                  tion  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 au‐
                  tomated  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  de‐
                  fault  name  of  "lvol#"  is generated, where # is a number
                  generated by LVM.
    
           **--nohints**
                  Do not use the hints file to locate devices for PVs. A com‐
                  mand may read more devices to find PVs when hints  are  not
                  used. The command will still perform standard hint file in‐
                  validation where appropriate.
    
           **--nolocking**
                  Disable locking.
    
           **--nosync**
                  Causes  the  creation  of  mirror,  raid1, raid4, raid5 and
                  raid10 to skip the initial synchronization. In case of mir‐
                  ror, 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  mir‐
                  ror/raid1/raid4/raid5  and  raid10  LV.  This option is not
                  valid for raid6, because raid6 relies on proper  parity  (P
                  and  Q Syndromes) being created during initial synchroniza‐
                  tion 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  ini‐
                  tial 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, depend‐
                  ing 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 logi‐
                  cal 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  ar‐
                  eas  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 automat‐
                  ically.  **none** is equivalent to zero.
    
           **-R** |**--regionsize** _Size_[m|UNIT]
                  Size  of  each  raid  or  mirror  synchronization   region.
                  lvm.conf(5) **activation/raid_region_size** can be used to con‐
                  figure a default.
    
           **--reportformat basic** |**json**
                  Overrides  current  output  format for reports which is de‐
                  fined  globally  by  the  report/output_format  setting  in
                  lvm.conf(5).  **basic** is the original format with columns and
                  rows.   If  there is more than one report per command, each
                  report is prefixed with the report name for identification.
                  **json** produces  report   output   in   JSON   format.   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 acti‐
                  vated 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 deactiva‐
                  tion.  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 au‐
                  toactivation property is disabled, the VG or LV will not be
                  activated  by  a  command  doing  autoactivation (vgchange,
                  lvchange, or pvscan using -aay.)  If autoactivation is dis‐
                  abled on a VG, no LVs will be autoactivated in that VG, and
                  the LV autoactivation property has no effect.  If autoacti‐
                  vation is enabled on a VG, autoactivation can  be  disabled
                  for individual LVs.
    
           **-L** |**--size** _Size_[m|UNIT]
                  Specifies the size of the new LV.  The --size and --extents
                  options  are alternate methods of specifying size.  The to‐
                  tal 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 ori‐
                  gin 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  --setactiva‐
                  tionskip.   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 provision‐
                  ing.  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 auto‐
                  matically 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(5)     **alloca‐**
                  **tion/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 never‐
                  theless 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  provision‐
                  ing.
    
           **--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 perfor‐
                  mance (**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 informa‐
                  tion 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(5)  **global/sparse_segtype_default** determines
                  the  default segment type used to create a sparse LV.  Any‐
                  thing 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 tar‐
                  get, 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  con‐
                  firmations.)   When  not  specified,  signatures  are wiped
                  whenever zeroing is done (see --zero). This  behaviour  can
                  be   configured   with  lvm.conf(5)  **allocation/wipe_signa‐**
                  **tures_when_zeroing_new_lvs**.  If blkid  wiping  is  used  (‐
                  lvm.conf(5)  **allocation/use_blkid_wiping**)  and  LVM is com‐
                  piled 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 as‐
                  sume  the answer yes. Use with extreme caution.  (For auto‐
                  matic 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



           _VG_     Volume Group name.  See lvm(8) for valid names.  For lvcre‐
                  ate, the required VG positional arg may be omitted when the
                  VG name is included in another option, e.g. --name VG/LV.
    
           _LV_     Logical Volume name.  See lvm(8) for valid names.  An LV
                  positional arg generally includes the VG name and LV name,
                  e.g. VG/LV.  LV1 indicates the LV must have a specific
                  type, where the accepted LV types are listed. (raid repre‐
                  sents raid<N> type).
    
           _PV_     Physical Volume name, a device path under /dev.  For com‐
                  mands managing physical extents, a PV positional arg gener‐
                  ally 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.  In‐
                  put 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) 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 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] ]
               [ **-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**]
               [ 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**]
               [ 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 8 KiB  and  a
           size of 100 MiB.  The LV name is chosen by lvcreate.
           **lvcreate -i 3 -I 8 -L 100m vg00**
    
           Create  a  raid1 LV with two images, and a usable size of 500 MiB.
           This operation requires two devices, one for  each  mirror  image.
           RAID  metadata (superblock and bitmap) is also included on the two
           devices.
           **lvcreate --type raid1 -m1 -L 500m -n mylv vg00**
    
           Create a mirror LV with two images, and a usable size of  500 MiB.
           This  operation  requires three devices: two for mirror images and
           one for a disk log.
           **lvcreate --type mirror -m1 -L 500m -n mylv vg00**
    
           Create a mirror LV with 2 images, and a usable  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 over‐
           writing 20% of the size of the original LV.
           **lvcreate -s -l 20%ORIGIN -n mysnap vg00/mylv**
    
           Create a sparse LV with 1 TiB of virtual space, and  actual  space
           just under 100 MiB.
           **lvcreate --snapshot --virtualsize 1t --size 100m --name mylv vg00**
    
           Create a linear LV with a usable size of 64 MiB on specific physi‐
           cal extents.
           **lvcreate -L 64m -n mylv vg00 /dev/sda:0-7 /dev/sdb:0-7**
    
           Create a RAID5 LV with a usable size of 5 GiB, 3 stripes, a stripe
           size of 64 KiB, using a total of 4 devices (including one for par‐
           ity).
           **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 span‐
           ning 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  5 GiB,  using  2  stripes,
           each  on  a  two-image mirror.  (Note that the **-i** and **-m** arguments
           behave differently: **-i** specifies the total number of stripes,  but
           **-m** specifies the number of images in addition to the first image).
           **lvcreate --type raid10 -L 5G -i 2 -m 1 -n mylv vg00**
    
           Create  a  1 TiB  thin  LV mythin, with 256 GiB thinpool tpool0 in
           vg00.
           **lvcreate -T -V 1T --size 256G --name mythin vg00/tpool0**
    
           Create a 1 TiB thin LV, first creating a new  thin  pool  for  it,
           where  the  thin  pool has 100 MiB of space, uses 2 stripes, has a
           64 KiB stripe size, and 256 KiB chunk size.
           **lvcreate --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 physi‐
           cal  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 10 GiB and name
           vpool1.
           **lvcreate --vdo --size 10G --name vdo0 vg00/vpool1**
    


* * *