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



NAME
       lvresize - Resize a logical volume

SYNOPSIS
       lvresize option_args position_args
           [ option_args ]
           [ position_args ]

           --alloc contiguous|cling|cling_by_tags|normal|anywhere|inherit
        -A|--autobackup y|n
           --commandprofile String
           --config String
        -d|--debug
           --driverloaded y|n
        -l|--extents [+|-]Number[PERCENT]
        -f|--force
        -h|--help
           --lockopt String
           --longhelp
        -n|--nofsck
           --nolocking
           --nosync
           --noudevsync
           --poolmetadatasize [+]Size[m|UNIT]
           --profile String
        -q|--quiet
           --reportformat basic|json
        -r|--resizefs
        -L|--size [+|-]Size[m|UNIT]
        -i|--stripes Number
        -I|--stripesize Size[k|UNIT]
        -t|--test
           --type linear|striped|snapshot|mirror|raid|thin|cache|vdo|thin-pool|cache-pool|vdo-pool
        -v|--verbose
           --version
        -y|--yes

DESCRIPTION
       lvresize  resizes  an  LV in the same way as lvextend and lvreduce. See lvextend(8) and lvre‐‐
       duce(8) for more information.

       In the usage section below, --size Size can be replaced with --extents Number.  See both  de‐
       scriptions the options section.

USAGE
       Resize an LV by a specified size.

       lvresize -L|--size [+|-]Size[m|UNIT] LV
           [ -l|--extents [+|-]Number[PERCENT] ]
           [ -r|--resizefs ]
           [    --poolmetadatasize [+]Size[m|UNIT] ]
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Resize an LV by specified PV extents.

       lvresize LV PV ...
           [ -r|--resizefs ]
           [ COMMON_OPTIONS ]
       -

       Resize a pool metadata SubLV by a specified size.

       lvresize --poolmetadatasize [+]Size[m|UNIT] LV_thinpool
           [ COMMON_OPTIONS ]
           [ PV ... ]
       -

       Common options for command:
           [ -A|--autobackup y|n ]
           [ -f|--force ]
           [ -n|--nofsck ]
           [ -i|--stripes Number ]
           [ -I|--stripesize Size[k|UNIT] ]
           [    --alloc contiguous|cling|cling_by_tags|normal|anywhere|inherit ]
           [    --nosync ]
           [    --noudevsync ]
           [    --reportformat basic|json ]
           [    --type linear|striped|snapshot|mir‐‐
           ror|raid|thin|cache|vdo|thin-pool|cache-pool|vdo-pool ]

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

OPTIONS
       --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 overriden 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 allo‐
              cation.

       -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.

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

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

       -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).

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

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

       -f|--force ...
              Override various checks, confirmations and protections.  Use with extreme caution.

       -h|--help
              Display help text.

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

       --longhelp
              Display long help text.

       -n|--nofsck
              Do not perform fsck before resizing filesystem when filesystem requires it. You may
              need to use --force to proceed with this option.

       --nolocking
              Disable locking.

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

       --poolmetadatasize [+]Size[m|UNIT]
              Specifies the new size of the pool metadata LV.  The plus prefix + can be used, in
              which case the value is added to the current size.

       --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'.

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

       -r|--resizefs
              Resize underlying filesystem together with the LV using fsadm(8).

       -L|--size [+|-]Size[m|UNIT]
              Specifies the new size of the 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.  When the plus + or minus - prefix is
              used, the value is not an absolute size, but is relative and added or subtracted from
              the current size.

       -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 com‐
              mand.  When creating a RAID 4/5/6 LV, this number does not include the extra devices
              that are required for parity. The largest number depends on the RAID type (raid0: 64,
              raid10: 32, raid4/5: 63, raid6: 62), and when unspecified, the default depends on the
              RAID type (raid0: 2, raid10: 2, raid4/5: 3, raid6: 5.)  To stripe a new raid LV across
              all PVs by default, see lvm.conf 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 read‐
              ing back metadata it believes has changed but hasn't.

       --type linear|striped|snapshot|mirror|raid|thin|cache|vdo|thin-pool|cache-pool|vdo-pool
              The LV type, also known as "segment type" or "segtype".  See usage descriptions for
              the specific ways to use these types.  For more information about redundancy and per‐
              formance (raid<N>, mirror, striped, linear) see lvmraid(7).  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.

       -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.

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

VARIABLES
       LV
              Logical  Volume name.  See lvm(8) for valid names.  An LV positional arg generally in‐
              cludes the VG name and LV name, e.g. VG/LV.  LV followed by _<type> indicates that  an
              LV of the given type is required. (raid represents raid<N> type)

       PV
              Physical  Volume  name,  a device path under /dev.  For commands managing physical ex‐
              tents, a PV positional arg generally accepts a suffix indicating a range (or  multiple
              ranges)  of  physical  extents (PEs). When the first PE is omitted, it defaults to the
              start of the device, and when the last PE is omitted it defaults to  end.   Start  and
              end  range  (inclusive):  PV[:PE-PE]...   Start  and  length  range (counting from 0):
              PV[:PE+PE]...

       String
              See the option description for information about the string content.

       Size[UNIT]
              Size is an input number that accepts an optional unit.  Input units are always treated
              as base two values, regardless of capitalization, e.g. 'k' and 'K' both refer to 1024.
              The default input unit is specified by letter, followed  by  |UNIT.   UNIT  represents
              other  possible  input  units:  bBsSkKmMgGtTpPeE.  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.

EXAMPLES
       Extend an LV by 16MB using specific physical extents:
       lvresize -L+16M vg1/lv1 /dev/sda:0-1 /dev/sdb:0-1

SEE ALSO
       lvm(8) lvm.conf(5) lvmconfig(8)

       pvchange(8)  pvck(8)  pvcreate(8)  pvdisplay(8) pvmove(8) pvremove(8) pvresize(8) pvs(8) pvs‐‐
       can(8)

       vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8) vgconvert(8) vgdisplay(8)  vg‐‐
       export(8)  vgextend(8) vgimport(8) vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8) vgre‐‐
       move(8) vgrename(8) vgs(8) vgscan(8) vgsplit(8)

       lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8) lvreduce(8)  lvremove(8)  lvre‐‐
       name(8) lvresize(8) lvs(8) lvscan(8)

       lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeactivate(8) lvmdump(8)

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

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



Red Hat, Inc.                     LVM TOOLS 2.03.11(2) (2021-01-08)                      LVRESIZE(8)