plucky (8) lvcreate.8.gz

Provided by: lvm2_2.03.27-1ubuntu1_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
           --integritysettings String
           --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
           --pooldatavdo 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|json_std
        -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] ]
           [    --raidintegrity y|n ]
           [    --raidintegritymode String ]
           [    --raidintegrityblocksize Number ]
           [    --integritysettings String ]
           [ COMMON_OPTIONS ]
           [ PV ... ]

       —

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

       lvcreate --type raid -L|--size Size[m|UNIT] VG
           [ -l|--extents Number[PERCENT] ]
           [ -m|--mirrors Number ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [    --raidintegrity y|n ]
           [    --raidintegritymode String ]
           [    --raidintegrityblocksize Number ]
           [    --integritysettings String ]
           [ 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] ]
           [    --raidintegrity y|n ]
           [    --raidintegritymode String ]
           [    --raidintegrityblocksize Number ]
           [    --integritysettings String ]
           [ 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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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|json_std ]
           [    --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 4 KiB and 512 KiB and the default value is 4.  For a cache pool the value must
              be between 32 KiB and 1 GiB and the default value is 64.  For  a  thin  pool  the  value  must  be
              between  64 KiB  and  1 GiB  and  the  default  value starts with 64 and scales up to fit the pool
              metadata size within 128 MiB, if the pool metadata size is not specified.  The  value  must  be  a
              multiple of 64 KiB.  See lvmthin(7) and lvmcache(7) for more information.

       --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.

       --integritysettings String
              Specifies tunable kernel options for dm-integrity.  See lvmraid(7) for more information.

       --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 response 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 synchronization. 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.

       --pooldatavdo y|n
              Use VDO type volume for pool data volume.

       --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|json_std
              Overrides current output format for reports which is defined globally by the  report/output_format
              setting  in  lvm.conf(5).   basic  is the original format with columns and rows.  If there is more
              than one report per command, each report is prefixed with the report name for identification. json
              produces  report  output  in  JSON format. json_std produces report output in JSON format which is
              more compliant with JSON standard.  See lvmreport(7) for more information.

       -k|--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 4 KiB of data in the new LV.  Default is y.   Snapshot  COW  volumes
              are always zeroed.  For thin pools, this controls zeroing of provisioned blocks.  LV is not zeroed
              if the read only flag is set.  Warning: trying to mount an unzeroed LV can  cause  the  system  to
              hang.

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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [ -s|--snapshot ]
           [ 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)
           [ -s|--snapshot ]
           [ 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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 ]
           [    --pooldatavdo y|n ]
           [    --compression y|n ]
           [    --deduplication y|n ]
           [    --vdosettings String ]
           [    --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 overwriting 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 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 5 GiB, 3 stripes, a stripe size of 64 KiB, 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 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 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 10 GiB 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), lvmcache(7), lvmraid(7), lvmthin(7), lvmvdo(7), lvmautoactivation(7)