lvcreate(8) — Linux manual page

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

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

NAME         top

       lvcreate — Create a logical volume

SYNOPSIS         top

       lvcreate option_args position_args
           [ option_args ]
           [ position_args ]

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

DESCRIPTION         top

       lvcreate  creates  a  new  LV in a VG. For standard LVs, this re‐
       quires allocating logical extents from the VG's free physical ex‐
       tents. 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  creat‐
       ed.

       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 refer‐
       ences 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/my‐
       thinpool.

USAGE         top

       Create a linear LV.

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

       —

       Create a striped LV.

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

       —

       Create a raid1 or mirror LV.

       lvcreate -m|--mirrors Number -L|--size Size[m|UNIT] VG
           [ --type raid1|mirror ] (implied)
           [ -l|--extents Number[PERCENT] ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --mirrorlog core|disk ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]

       —

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

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

       —

       Create a raid10 LV.

       lvcreate -m|--mirrors Number -i|--stripes Number
             -L|--size Size[m|UNIT] VG
           [ --type raid10 ] (implied)
           [ -l|--extents Number[PERCENT] ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -R|--regionsize Size[m|UNIT] ]
           [    --[raid]minrecoveryrate Size[k|UNIT] ]
           [    --[raid]maxrecoveryrate Size[k|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]

       —

       Create a COW snapshot LV of an origin LV.

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

       —

       Create a thin pool.

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

       —

       Create a cache pool.

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

       —

       Create a thin LV in a thin pool.

       lvcreate -V|--virtualsize Size[m|UNIT] --thinpool LV VG
           [ --type thin ] (implied)
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

       —

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

       lvcreate -s|--snapshot LV1
           [ --type thin ] (implied)
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       lvcreate --type thin --thinpool LV LV
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

       —

       Create a LV that returns VDO when used.

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

       —

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

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

       —

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

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

       —

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

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

       —

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

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

       —

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

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

       —

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

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

OPTIONS         top


       -a|--activate y|n|ay
              Controls  the  active state of the new LV.  y makes the LV
              active, or available.  New LVs are made active by default.
              n makes the LV inactive, or unavailable, only when  possi‐
              ble.   In some cases, creating an LV requires it to be ac‐
              tive.  For example, COW snapshots of an active  origin  LV
              can only be created in the active state (this does not ap‐
              ply  to  thin  snapshots).  The --zero option normally re‐
              quires the LV to be active.  If autoactivation ay is used,
              the LV  is  only  activated  if  it  matches  an  item  in
              lvm.conf(5)   activation/auto_activation_volume_list.   ay
              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 par‐
              allel stripes on the same PV.  inherit applies the VG pol‐
              icy to an LV.  contiguous requires new PEs be placed adja‐
              cent 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  per‐
              formance, e.g. by placing two stripes on the same PV.  Op‐
              tional  positional PV args on the command line can also be
              used to limit which PVs the command will use  for  alloca‐
              tion.  See lvm(8) for more information about allocation.

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

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

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

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

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

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

       --cachepool LV
              The name of a cache pool.

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

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

       --cachevol LV
              The name of a cache volume.

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

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

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

       --config String
              Config  settings   for   the   command.   These   override
              lvm.conf(5) settings.  The String arg uses the same format
              as  lvm.conf(5),  or  may  use  section/field syntax.  See
              lvm.conf(5) for more information about config.

       -C|--contiguous y|n
              Sets or resets the contiguous allocation policy  for  LVs.
              Default  is  no contiguous allocation based on a next free
              principle.  It is only possible to change a non-contiguous
              allocation policy to contiguous if all  of  the  allocated
              physical extents in the LV are already contiguous.

       -d|--debug ...
              Set  debug level. Repeat from 1 to 6 times to increase the
              detail of messages sent to the log file and/or syslog  (if
              configured).

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

       --devices PV
              Devices  that  the command can use. This option can be re‐
              peated or accepts a comma separated list of devices.  This
              overrides the devices file.

       --devicesfile String
              A file listing devices that LVM should use.  The file must
              exist   in  /etc/lvm/devices/  and  is  managed  with  the
              lvmdevices(8) command.  This overrides the lvm.conf(5) de‐
              vices/devicesfile and devices/use_devicesfile settings.

       --discards passdown|nopassdown|ignore
              Specifies how the device-mapper thin  pool  layer  in  the
              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 ex‐
              tents 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  re‐
              quests  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  infor‐
              mation.

       -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 re‐
              lated 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  com‐
              pleted.

       -h|--help
              Display help text.

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

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

       --journal String
              Record  information in the systemd journal.  This informa‐
              tion is in addition to information enabled by the lvm.conf
              log/journal setting.  command:  record  information  about
              the  command.   output: record the default command output.
              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 un‐
              bounded.  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 un‐
              bounded.  See lvmraid(7) for more information.

       --mirrorlog core|disk
              Specifies the type of mirror log for LVs with the "mirror"
              type (does not apply to the "raid1" type.)  disk is a per‐
              sistent log and requires a small amount of storage  space,
              usually on a separate device from the data being mirrored.
              core  is  not  persistent; the log is kept only in memory.
              In this case, the mirror must be synchronized (by  copying
              LV  data from the first device to others) each time the LV
              is activated, e.g. after reboot.  mirrored is a persistent
              log that is itself mirrored, but should  be  avoided.  In‐
              stead, 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 speci‐
              fy 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   glob‐
              al/raid10_segtype_default to configure the default  types.
              See  the  --nosync  option for avoiding initial image syn‐
              chronization.  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 de‐
              fault name of "lvol#" is generated, where #  is  a  number
              generated by LVM.

       --nohints
              Do  not  use  the  hints file to locate devices for PVs. A
              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.

       --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 writ‐
              ten, though any data written afterwards will cause  parity
              blocks to be stored.  This is useful for skipping a poten‐
              tially long and resource intensive initial sync of an emp‐
              ty 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 synchro‐
              nization 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, de‐
              pending 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  im‐
              ages.

       --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 ar‐
              eas would not be detected. A journal does  not  have  this
              problem.   The journal mode doubles writes to storage, but
              can improve performance for scattered writes packed into a
              single journal write.  bitmap mode can in  theory  achieve
              full write throughput of the device, but would not benefit
              from the potential scattered write optimization.

       -r|--readahead auto|none|Number
              Sets  read  ahead  sector count of an LV.  auto is the de‐
              fault 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 de‐
              fined globally  by  the  report/output_format  setting  in
              lvm.conf(5).   basic  is  the original format with columns
              and rows.  If there is more than one report  per  command,
              each report is prefixed with the report name for identifi‐
              cation.  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 ac‐
              tivated 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 deacti‐
              vation.  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  autoacti‐
              vation  is  disabled on a VG, no LVs will be autoactivated
              in that VG, and the LV autoactivation property has no  ef‐
              fect.   If  autoactivation is enabled on a VG, autoactiva‐
              tion can be disabled for individual LVs.

       -L|--size Size[m|UNIT]
              Specifies the size of the new LV.  The  --size  and  --ex‐
              tents  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 back‐
              ups, while the origin LV continues to be used.   This  op‐
              tion  can create a COW (copy on write) snapshot, or a thin
              snapshot (in a thin pool.)   Thin  snapshots  are  created
              when  the  origin  is a thin LV and the size option is NOT
              specified. Thin snapshots share the  same  blocks  in  the
              thin  pool,  and  do  not  allocate new space from the VG.
              Thin snapshots are  created  with  the  "activation  skip"
              flag,  see --setactivationskip.  A thin snapshot of a non-
              thin "external origin" LV is 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  snap‐
              shot.   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  pari‐
              ty.  The  largest  number depends on the RAID type (raid0:
              64, raid10: 32, raid4/5: 63, raid6: 62), and when unspeci‐
              fied, the default depends on  the  RAID  type  (raid0:  2,
              raid10: 2, raid4/5: 3, raid6: 5.)  To stripe a new raid LV
              across   all  PVs  by  default,  see  lvm.conf(5)  alloca‐
              tion/raid_stripe_all_devices.

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

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

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

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

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

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

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

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

       --version
              Display version information.

       -V|--virtualsize Size[m|UNIT]
              The  virtual  size  of  a new thin LV.  See lvmthin(7) for
              more information about LVM thin provisioning.  Using  vir‐
              tual  size  (-V)  and  actual size (-L) together creates a
              sparse LV.  lvm.conf(5) global/sparse_segtype_default  de‐
              termines  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.   Snap‐
              shots  are less efficient than thin provisioning when cre‐
              ating large sparse LVs (GiB).

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

       -y|--yes
              Do  not  prompt  for confirmation interactively but always
              assume the answer yes. Use with extreme caution.  (For au‐
              tomatic 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 sys‐
              tem to hang.

VARIABLES         top

       VG     Volume Group name.  See lvm(8) for valid names.  For
              lvcreate, the required VG positional arg may be omitted
              when the VG name is included in another option, e.g.
              --name VG/LV.

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

       PV     Physical Volume name, a device path under /dev.  For com‐
              mands managing physical extents, a PV positional arg gen‐
              erally 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, regard‐
              less of capitalization, e.g. 'k' and 'K' both refer to
              1024.  The default input unit is specified by letter, fol‐
              lowed 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 con‐
              trol --units, where capital letters mean multiple of
              1000.)

ENVIRONMENT VARIABLES         top

       See lvm(8) for information about environment variables used by
       lvm.  For example, LVM_VG_NAME can generally be substituted for a
       required VG parameter.

ADVANCED USAGE         top

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

       Create an LV that returns errors when used.

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

       —

       Create an LV that returns zeros when read.

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

       —

       Create a linear LV.

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

       —

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

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

       —

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

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

       —

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

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

       —

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

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

       —

       Create a thin pool.

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

       —

       Create a thin pool named in --thinpool.

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

       —

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

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

       —

       Create a thin LV in a thin pool.

       lvcreate --type thin -V|--virtualsize Size[m|UNIT]
             --thinpool LV VG
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

       —

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

       lvcreate --type thin -V|--virtualsize Size[m|UNIT] LV1
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

           LV1 types: thinpool

       —

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

       lvcreate -V|--virtualsize Size[m|UNIT] LV1
           [ --type thin ] (implied)
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

           LV1 types: thinpool

       —

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

       lvcreate --type thin LV1
           [ -T|--thin ]
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       lvcreate -T|--thin LV1
           [ --type thin ] (implied)
           [ COMMON_OPTIONS ]

           LV1 types: thin

       —

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

       lvcreate -s|--snapshot --thinpool LV LV
           [ --type thin ] (implied)
           [ COMMON_OPTIONS ]

       —

       Create a VDO LV with VDO pool.

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

       —

       Create a VDO LV with VDO pool.

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

       —

       Create a thin LV, first creating a thin pool for it,
       where the new thin pool is named by the --thinpool arg.

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

       —

       Create a thin LV, first creating a thin pool for it,
       where the new thin pool is named by --thinpool.

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

       —

       Create a thin LV, first creating a thin pool for it,
       where the new thin pool is named in the first arg,
       or the new thin pool name is generated when the first
       arg is a VG name.

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

       —

       Create a thin LV, first creating a thin pool for it,
       where the new thin pool is named in the first arg,
       or the new thin pool name is generated when the first
       arg is a VG name.

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

       —

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

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

       —

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

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

       —

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

       lvcreate --type cache -L|--size Size[m|UNIT] LV1
           [ -l|--extents Number[PERCENT] ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [ -H|--cache ]
           [ -c|--chunksize Size[k|UNIT] ]
           [    --cachemode writethrough|writeback|passthrough ]
           [    --cachepolicy String ]
           [    --cachesettings String ]
           [    --cachemetadataformat auto|1|2 ]
           [    --poolmetadatasize Size[m|UNIT] ]
           [    --poolmetadataspare y|n ]
           [ COMMON_OPTIONS ]
           [ PV ... ]

           LV1 types: cachepool

       —

       When the LV arg is a cachepool, then create a new LV and
       attach the cachepool arg to it.
       (variant, use --type cache and --cachepool.)
       When the LV arg is not a cachepool, then create a new cachepool
       and attach it to the LV arg (alternative, use lvconvert.)

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

       —

EXAMPLES         top

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

       Create  a raid1 LV with two images, and a usable size of 500 MiB.
       This operation requires two devices, one for each  mirror  image.
       RAID metadata (superblock and bitmap) is also included on the two
       devices.
       lvcreate --type raid1 -m1 -L 500m -n mylv vg00

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

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

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

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

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

       Create a linear LV with a usable size of 64 MiB on specific phys‐
       ical 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 span‐
       ning  all  the  PVs in the VG (note that the command will fail if
       there are more than 8 PVs in the VG, in which case -i 7  must  be
       used  to get to the current maximum of 8 devices including parity
       for RaidLVs).
       lvcreate --config allocation/raid_stripe_all_devices=1
              --type raid5 -l 100%FREE -n mylv vg00

       Create RAID10 LV with a usable size of 5 GiB,  using  2  stripes,
       each  on  a  two-image mirror. (Note that the -i and -m arguments
       behave differently: -i specifies the total number of stripes, but
       -m specifies the number of images in addition to  the  first  im‐
       age).
       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 "ori‐
       gin" 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 phys‐
       ical  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         top

       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)

COLOPHON         top

       This page is part of the lvm2 (Logical Volume Manager 2) project.
       Information about the project can be found at 
       ⟨http://www.sourceware.org/lvm2/⟩.  If you have a bug report for
       this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/lvm2.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-11.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       [email protected]

Red Hat, Inc.     LVM TOOLS 2.03.25(2)-git (2024-05-16)      LVCREATE(8)

Pages that refer to this page: lvmcache(7)lvmraid(7)lvmreport(7)lvmthin(7)lvmvdo(7)lvchange(8)lvconvert(8)lvcreate(8)lvdisplay(8)lvextend(8)lvm(8)lvmconfig(8)lvmdevices(8)lvmdiskscan(8)lvm-fullreport(8)lvm-lvpoll(8)lvreduce(8)lvremove(8)lvrename(8)lvresize(8)lvs(8)lvscan(8)pvchange(8)pvck(8)pvcreate(8)pvdisplay(8)pvmove(8)pvremove(8)pvresize(8)pvs(8)pvscan(8)vgcfgbackup(8)vgcfgrestore(8)vgchange(8)vgck(8)vgconvert(8)vgcreate(8)vgdisplay(8)vgexport(8)vgextend(8)vgimport(8)vgimportclone(8)vgimportdevices(8)vgmerge(8)vgmknodes(8)vgreduce(8)vgremove(8)vgrename(8)vgs(8)vgscan(8)vgsplit(8)