Provided by: lvm2_2.03.16-2ubuntu1_amd64 bug

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 extended with other PVs (vgextend(8)), or  existing  LVs  can  be  reduced  or  removed
       (lvremove(8), lvreduce(8)).

       To  control  which  PVs a new LV will use, specify one or more PVs as position args at the
       end of the command line. lvcreate will allocate physical extents only from  the  specified
       PVs.

       lvcreate  can also create snapshots of existing LVs, e.g. for backup purposes. The data in
       a new snapshot LV represents the content of the original LV from the time the snapshot was
       created.

       RAID  LVs  can  be created by specifying an LV type when creating the LV (see lvmraid(7)).
       Different RAID levels require different numbers of unique PVs be available in the  VG  for
       allocation.

       Thin  pools  (for  thin  provisioning)  and  cache  pools (for caching) are represented by
       special LVs with types thin-pool and cache-pool (see lvmthin(7) and lvmcache(7)). The pool
       LVs  are  not  usable as standard block devices, but the LV names act as references to the
       pools.

       Thin LVs are thinly provisioned from a thin pool, and are  created  with  a  virtual  size
       rather  than  a physical size. A cache LV is the combination of a standard LV with a cache
       pool, used to cache active portions of the LV to improve performance.

       VDO LVs are also provisioned volumes from a VDO pool, and are created with a virtual  size
       rather than a physical size (see lvmvdo(7)).

   Usage notes
       In  the  usage  section  below,  --size  Size  can  be replaced with --extents Number. See
       descriptions in the options section.

       In the usage section below, --name is omitted from the required options, even though it is
       typically used. When the name is not specified, a new LV name is generated with the "lvol"
       prefix and a unique numeric suffix.

       In the usage section below, when creating a pool and the name is omitted the new  LV  pool
       name is generated with the "vpool" for vdo-pools  for prefix and a unique numeric suffix.

       Pool name can be specified together with VG name i.e.: vg00/mythinpool.

USAGE

       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|n|ay
              Controls the active state of the new LV.  y makes the LV active, or available.  New
              LVs are made active by default.  n makes the LV inactive, or unavailable, only when
              possible.   In  some  cases, creating an LV requires it to be active.  For example,
              COW snapshots of an active origin LV can only be created in the active state  (this
              does  not  apply to thin snapshots).  The --zero option normally requires the LV to
              be active.  If autoactivation ay is used, the LV is only activated if it matches an
              item  in  lvm.conf(5)  activation/auto_activation_volume_list.  ay implies --zero n
              and --wipesignatures n.  See lvmlockd(8)  for  more  information  about  activation
              options for shared VGs.

       --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.  normal  applies  common
              sense  rules  such as not placing parallel stripes on the same PV.  inherit applies
              the VG policy to an LV.  contiguous requires new PEs be placed adjacent to existing
              PEs.  cling places new PEs on the same PV as existing PEs in the same stripe of the
              LV.  If there are sufficient PEs for an allocation, but normal does not  use  them,
              anywhere  will use them even if it reduces performance, e.g. by placing two stripes
              on the same PV.  Optional positional PV args on the command line can also  be  used
              to  limit  which  PVs  the  command  will  use for allocation.  See lvm(8) for more
              information about allocation.

       -A|--autobackup y|n
              Specifies if metadata should be backed up automatically after a  change.   Enabling
              this is strongly advised! See vgcfgbackup(8) for more information.

       -H|--cache
              Specifies  the  command is handling a cache LV or cache pool.  See --type cache and
              --type cache-pool.  See lvmcache(7) for more information about LVM caching.

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

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

       --cachemode writethrough|writeback|passthrough
              Specifies when writes to a cache  LV  should  be  considered  complete.   writeback
              considers  a write complete as soon as it is stored in the cache pool.  writethough
              considers a write complete only when it has been stored in both the cache pool  and
              on  the  origin  LV.   While  writethrough  may  be  slower  for writes, it is more
              resilient if something should happen to a device associated with the cache pool LV.
              With  passthrough,  all  reads  are  served  from the origin LV (all reads miss the
              cache) and all writes are forwarded to the  origin  LV;  additionally,  write  hits
              cause cache block invalidates. See lvmcache(7) for more information.

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

       --cachepool LV
              The name of a cache pool.

       --cachesettings String
              Specifies  tunable  kernel options for dm-cache or dm-writecache LVs.  Use the form
              'option=value' or 'option1=value option2=value', or repeat --cachesettings for each
              option  being  set.  These settings override the default kernel behaviors which are
              usually adequate.  To  remove  cachesettings  and  revert  to  the  default  kernel
              behaviors,   use   --cachesettings  'default'  for  dm-cache  or  an  empty  string
              --cachesettings '' for dm-writecache.  See lvmcache(7) for more information.

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

       --cachevol LV
              The name of a cache volume.

       -c|--chunksize Size[k|UNIT]
              The size of chunks in a snapshot, cache pool or  thin  pool.   For  snapshots,  the
              value must be a power of 2 between 4KiB and 512KiB and the default value is 4.  For
              a cache pool the value must be between 32KiB and 1GiB and the default value is  64.
              For  a  thin  pool  the  value must be between 64KiB and 1GiB and the default value
              starts with 64 and scales up to fit the pool metadata size within  128MiB,  if  the
              pool  metadata  size is not specified.  The value must be a multiple of 64KiB.  See
              lvmthin(7) and lvmcache(7) for more information.

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

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

       --config String
              Config settings for the command. These override lvm.conf(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
              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
              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) devices/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  discards  to  the  underlying  device.   See  lvmthin(7)  for  more
              information.

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

       --errorwhenfull y|n
              Specifies thin pool behavior when data space is exhausted.  When yes, device-mapper
              will immediately return an error when a thin  pool  is  full  and  an  I/O  request
              requires  space.  When no, device-mapper will queue these I/O requests for a period
              of time to allow the thin pool to be extended.  Errors are returned if no space  is
              available   after  the  timeout.   (Also  see  dm-thin-pool  kernel  module  option
              no_space_timeout.)  See lvmthin(7) for more information.

       -l|--extents Number[PERCENT]
              Specifies the size of the new LV in logical  extents.   The  --size  and  --extents
              options  are  alternate  methods  of specifying size.  The total number of physical
              extents used will be greater when redundant data is needed  for  RAID  levels.   An
              alternate syntax allows the size to be determined indirectly as a percentage of the
              size of a related VG, LV, or set of PVs. The suffix %VG denotes the total  size  of
              the  VG,  the  suffix %FREE the remaining free space in the VG, and the suffix %PVS
              the free space in the specified PVs.  For a snapshot, the size can be expressed  as
              a percentage of the total size of the origin LV with the suffix %ORIGIN (100%ORIGIN
              provides space for the whole origin).  When expressed as  a  percentage,  the  size
              defines an upper limit for the number of logical extents in the new LV. The precise
              number of logical extents in the new LV is not determined  until  the  command  has
              completed.

       -h|--help
              Display help text.

       -K|--ignoreactivationskip
              Ignore  the  "activation skip" LV flag during activation to allow LVs with the flag
              set to be activated.

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

       --journal String
              Record  information  in  the  systemd  journal.  This information is in addition to
              information  enabled  by  the  lvm.conf  log/journal  setting.    command:   record
              information  about the command.  output: record the default command output.  debug:
              record full command debugging.

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

       --longhelp
              Display long help text.

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

       --[raid]maxrecoveryrate Size[k|UNIT]
              Sets  the maximum recovery rate for a RAID LV.  The rate value is an amount of data
              per second for each device in the array.  Setting the rate to 0 means  it  will  be
              unbounded.  See lvmraid(7) for more information.

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

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

       --[raid]minrecoveryrate Size[k|UNIT]
              Sets the minimum recovery rate for a RAID LV.  The rate value is an amount of  data
              per  second  for  each device in the array.  Setting the rate to 0 means it will be
              unbounded.  See lvmraid(7) for more information.

       --mirrorlog core|disk
              Specifies the type of mirror log for LVs with the "mirror" type (does not apply  to
              the "raid1" type.)  disk is a persistent log and requires a small amount of storage
              space, usually on a separate device from the data  being  mirrored.   core  is  not
              persistent;  the  log  is  kept  only  in memory.  In this case, the mirror must be
              synchronized (by copying LV data from the first device to others) each time the  LV
              is  activated,  e.g.  after  reboot.   mirrored  is a persistent log that is itself
              mirrored, but should be avoided. Instead, use the raid1 type for log redundancy.

       -m|--mirrors Number
              Specifies the number of mirror images in addition to the original  LV  image,  e.g.
              --mirrors  1  means  there  are two images of the data, the original and one mirror
              image.  Optional positional PV args on the command line can specify the devices the
              images  should  be placed on.  There are two mirroring implementations: "raid1" and
              "mirror".  These are the names of the corresponding LV types, or  "segment  types".
              Use  the  --type  option  to  specify which to use (raid1 is default, and mirror is
              legacy)       Use       lvm.conf(5)        global/mirror_segtype_default        and
              global/raid10_segtype_default  to  configure  the  default types.  See the --nosync
              option for  avoiding  initial  image  synchronization.   See  lvmraid(7)  for  more
              information.

       --monitor y|n
              Start  (yes) or stop (no) monitoring an LV with dmeventd.  dmeventd monitors kernel
              events for an LV, and performs automated maintenance  for  the  LV  in  reponse  to
              specific events.  See dmeventd(8) for more information.

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

       --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
              synchronization. In case of mirror, raid1 and raid10, any data  written  afterwards
              will  be  mirrored,  but the original contents will not be copied. In case of raid4
              and raid5, no parity blocks will be written, though  any  data  written  afterwards
              will  cause  parity blocks to be stored.  This is useful for skipping a potentially
              long and resource intensive initial sync of an empty  mirror/raid1/raid4/raid5  and
              raid10  LV.   This  option  is  not valid for raid6, because raid6 relies on proper
              parity (P and Q Syndromes) being created during initial synchronization in order to
              reconstruct  proper  user date in case of device failures.  raid0 and raid0_meta do
              not provide any data copies or parity support  and  thus  do  not  support  initial
              synchronization.

       --noudevsync
              Disables  udev  synchronisation.  The  process  will not wait for notification from
              udev. It will  continue  irrespective  of  any  possible  udev  processing  in  the
              background.  Only  use  this  if  udev  is not running or has rules that ignore the
              devices LVM creates.

       -p|--permission rw|r
              Set access permission to read only r or read and write rw.

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

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

       --poolmetadataspare y|n
              Enable or disable the automatic creation and management of a spare pool metadata LV
              in  the VG. A spare metadata LV is reserved space that can be used when repairing a
              pool.

       --profile String
              An alias for --commandprofile or --metadataprofile, depending on the command.

       -q|--quiet ...
              Suppress output and log messages. Overrides --debug and --verbose.  Repeat once  to
              also suppress any prompts with answer 'no'.

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

       --raidintegrityblocksize Number
              The  block  size  to use for dm-integrity on raid images.  The integrity block size
              should usually match the device logical block size, or the file system block  size.
              It  may  be  less  than  the  file  system block size, but not less than the device
              logical block size.  Possible values: 512, 1024, 2048, 4096.

       --raidintegritymode String
              Use a journal (default) or bitmap for keeping  integrity  checksums  consistent  in
              case  of a crash. The bitmap areas are recalculated after a crash, so corruption in
              those areas would not be detected. A journal  does  not  have  this  problem.   The
              journal  mode  doubles writes to storage, but can improve performance for scattered
              writes packed into a single journal write.  bitmap mode can in theory achieve  full
              write  throughput of the device, but would not benefit from the potential scattered
              write optimization.

       -r|--readahead auto|none|Number
              Sets read ahead sector count of an LV.  auto is the default which allows the kernel
              to choose a suitable value automatically.  none is equivalent to zero.

       -R|--regionsize Size[m|UNIT]
              Size    of    each    raid   or   mirror   synchronization   region.    lvm.conf(5)
              activation/raid_region_size can be used to configure a default.

       --reportformat basic|json
              Overrides current output format for  reports  which  is  defined  globally  by  the
              report/output_format  setting  in  lvm.conf(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 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  using  -aay.)   If  autoactivation  is  disabled  on  a  VG, no LVs will be
              autoactivated in that VG, and the LV autoactivation property  has  no  effect.   If
              autoactivation  is  enabled  on a VG, autoactivation can be disabled for individual
              LVs.

       -L|--size Size[m|UNIT]
              Specifies the size of the new LV.  The --size and --extents options  are  alternate
              methods  of  specifying  size.   The  total number of physical extents used will be
              greater when redundant data is needed for RAID levels.

       -s|--snapshot
              Create a snapshot. Snapshots provide  a  "frozen  image"  of  an  origin  LV.   The
              snapshot  LV  can  be  used,  e.g. for backups, while the origin LV continues to be
              used.  This option can create a COW (copy on write) snapshot, or  a  thin  snapshot
              (in  a thin pool.)  Thin snapshots are created when the origin is a thin LV and the
              size option is NOT specified. Thin snapshots share the  same  blocks  in  the  thin
              pool,  and  do not allocate new space from the VG.  Thin snapshots are created with
              the "activation skip" flag, see --setactivationskip.  A thin snapshot of a non-thin
              "external origin" LV is created when a thin pool is specified. Unprovisioned blocks
              in the thin snapshot LV are read from the external origin LV. The  external  origin
              LV  must  be  read-only.   See  lvmthin(7)  for  more  information  about  LVM thin
              provisioning.  COW snapshots are created when a size  is  specified.  The  size  is
              allocated  from  space  in  the VG, and is the amount of space that can be used for
              saving COW blocks as writes occur to the  origin  or  snapshot.   The  size  chosen
              should  depend upon the amount of writes that are expected; often 20% of the origin
              LV is enough. If COW space runs low, it can be extended with lvextend (shrinking is
              also allowed with lvreduce.)  A small amount of the COW snapshot LV size is used to
              track COW block locations, so the full size is not available for COW  data  blocks.
              Use  lvs  to  check  how  much space is used, and see --monitor to to automatically
              extend the size to avoid running out of space.

       -i|--stripes Number
              Specifies the number of stripes in  a  striped  LV.  This  is  the  number  of  PVs
              (devices)  that  a striped LV is spread across. Data that appears sequential in the
              LV  is  spread  across  multiple  devices  in  units  of  the  stripe   size   (see
              --stripesize).  This  does not change existing allocated space, but only applies to
              space being allocated by the command.  When creating a RAID 4/5/6 LV,  this  number
              does not include the extra devices that are required for parity. The largest number
              depends on the RAID type (raid0: 64, raid10: 32, raid4/5: 63, raid6: 62), and  when
              unspecified, the default depends on the RAID type (raid0: 2, raid10: 2, raid4/5: 3,
              raid6: 5.)  To stripe a new raid LV across all  PVs  by  default,  see  lvm.conf(5)
              allocation/raid_stripe_all_devices.

       -I|--stripesize Size[k|UNIT]
              The  amount  of  data  that is written to one device before moving to the next in a
              striped LV.

       -t|--test
              Run in test mode. Commands will  not  update  metadata.   This  is  implemented  by
              disabling  all  metadata  writing but nevertheless returning success to the calling
              function. This may lead to unusual error messages in multi-stage  operations  if  a
              tool relies on reading back metadata it believes has changed but hasn't.

       -T|--thin
              Specifies  the command is handling a thin LV or thin pool.  See --type thin, --type
              thin-pool, and --virtualsize.  See lvmthin(7) for more information about  LVM  thin
              provisioning.

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

       --type linear|striped|snapshot|raid|mirror|thin|thin-pool|vdo|vdo-pool|cache|cache-pool|
              writecache
              The LV type, also known as "segment type" or "segtype".  See usage descriptions for
              the  specific  ways  to use these types.  For more information about redundancy and
              performance  (raid<N>,  mirror,  striped,  linear)  see   lvmraid(7).    For   thin
              provisioning  (thin,  thin-pool)  see  lvmthin(7).  For performance caching (cache,
              cache-pool) see lvmcache(7).  For  copy-on-write  snapshots  (snapshot)  see  usage
              definitions.   For VDO (vdo) see lvmvdo(7).  Several commands omit an explicit type
              option because  the  type  is  inferred  from  other  options  or  shortcuts  (e.g.
              --stripes,  --mirrors,  --snapshot,  --virtualsize,  --thin,  --cache, --vdo).  Use
              inferred types with care because it can lead to unexpected results.

       --vdo
              Specifies the command is handling VDO LV.  See --type vdo.  See lvmvdo(7) for  more
              information about VDO usage.

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

       --vdosettings String
              Specifies  tunable  VDO  options  for  VDO  LVs.   Use  the  form 'option=value' or
              'option1=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)
              for more information.

       -v|--verbose ...
              Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent
              to stdout and stderr.

       --version
              Display version information.

       -V|--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.  Anything written to a sparse LV will be
              returned when reading from it.  Reading from other areas  of  the  LV  will  return
              blocks  of  zeros.   When  using a snapshot to create a sparse LV, a hidden virtual
              device is created using the zero target,  and  the  LV  has  the  suffix  _vorigin.
              Snapshots  are less efficient than thin provisioning when creating large sparse LVs
              (GiB).

       -W|--wipesignatures y|n
              Controls detection and subsequent wiping of signatures on  new  LVs.   There  is  a
              prompt  for  each signature detected to confirm its wiping (unless --yes is used to
              override confirmations.)  When not specified, signatures are wiped whenever zeroing
              is   done   (see  --zero).  This  behaviour  can  be  configured  with  lvm.conf(5)
              allocation/wipe_signatures_when_zeroing_new_lvs.    If   blkid   wiping   is   used
              (lvm.conf(5)  allocation/use_blkid_wiping)  and  LVM  is compiled with blkid wiping
              support, then the blkid(8) library is used to detect the signatures (use  blkid  -k
              to list the signatures that are recognized).  Otherwise, native LVM code is used to
              detect signatures (only MD RAID, swap and LUKS  signatures  are  detected  in  this
              case.)  The LV is not wiped if the read only flag is set.

       -y|--yes
              Do  not prompt for confirmation interactively but always assume the answer yes. Use
              with extreme caution.  (For automatic no, see -qq.)

       -Z|--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 lvcreate, the required VG
              positional arg may be omitted when the VG name is included in another option,  e.g.
              --name VG/LV.

       LV     Logical  Volume  name.  See lvm(8) for valid names.  An LV positional arg generally
              includes the VG name and LV name, e.g. VG/LV.  LV1 indicates the  LV  must  have  a
              specific  type,  where  the  accepted LV types are listed. (raid represents raid<N>
              type).

       PV     Physical Volume name, a device path under /dev.   For  commands  managing  physical
              extents,  a  PV  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)  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 ]
           [    --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
       total of 4 devices (including one for parity).
       lvcreate --type raid5 -L 5G -i 3 -I 64 -n mylv vg00

       Create a RAID5 LV using all of the free space in the VG and spanning all the PVs in the VG
       (note  that the command will fail if there are more than 8 PVs in the VG, in which case -i
       7 must be used to get to the current maximum of 8 devices including parity for RaidLVs).
       lvcreate --config allocation/raid_stripe_all_devices=1
              --type raid5 -l 100%FREE -n mylv vg00

       Create RAID10 LV with a usable size of 5GiB, using 2 stripes, each on a two-image  mirror.
       (Note  that  the  -i and -m arguments behave differently: -i specifies the total number of
       stripes, but -m specifies the number of images in addition to the first image).
       lvcreate --type raid10 -L 5G -i 2 -m 1 -n mylv vg00

       Create a 1TiB thin LV mythin, with 256GiB thinpool tpool0 in vg00.
       lvcreate -T -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), lvm.conf(5), lvmconfig(8), lvmdevices(8),

       pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8),
       pvs(8), pvscan(8),

       vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgcreate(8), vgconvert(8),
       vgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgimportdevices(8),
       vgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8),
       vgsplit(8),

       lvcreate(8), lvchange(8), lvconvert(8), lvdisplay(8), lvextend(8), lvreduce(8),
       lvremove(8), lvrename(8), lvresize(8), lvs(8), lvscan(8),

       lvm-fullreport(8), lvm-lvpoll(8), blkdeactivate(8), lvmdump(8),

       dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8), lvmdbusd(8), fsadm(8),

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