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            "text": "# lvreduce(8) (man)\n\n**Summary:** lvreduce - Reduce the size of a logical volume\n\n**Synopsis:** lvreduce optionargs positionargs\n[ optionargs ]\n\n## Flags\n\n| Flag | Long | Arg | Description |\n|------|------|-----|-------------|\n| -A | --autobackup | — | Specifies if metadata should be backed up automatically after a change. Enabling this is strongly advised! See vgcfgback |\n| -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 conf |\n| -l | --extents | — | Specifies the new size of the LV in logical extents. The --size and --extents options are alternate methods of specifyin |\n| -f | --force | — | Override various checks, confirmations and protections. Use with extreme caution. |\n| -h | --help | — | Display help text. --lockopt String Used to pass options for special cases to lvmlockd. See lvmlockd(8) for more informa |\n| — | --longhelp | — | Display long help text. |\n| -n | --nofsck | — | Do not perform fsck before resizing filesystem when filesystem requires it. You may need to use --force to proceed with  |\n| — | --nolocking | — | Disable locking. |\n| — | --noudevsync | — | Disables udev synchronisation. The process will not wait for notification from udev. It will continue irrespective of an |\n| -q | --quiet | — | Suppress output and log messages. Overrides --debug and --verbose. Repeat once to also suppress any prompts with answer  |\n| -r | --resizefs | — | Resize underlying filesystem together with the LV using fsadm(8). |\n| -L | --size | — | Specifies the new size of the LV. The --size and --extents options are alternate methods of specifying size. The total n |\n| -t | --test | — | Run in test mode. Commands will not update metadata. This is implemented by disabling all metadata writing but neverthel |\n| -v | --verbose | — | Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent to stdout and stderr. |\n| — | --version | — | Display version information. |\n| -y | --yes | — | Do not prompt for confirmation interactively but always assume the answer yes. Use with extreme caution. (For automatic  |\n\n## Examples\n\n- `Reduce the size of an LV by 3 logical extents:`\n\n## See Also\n\n- lvm(8)\n- lvm.conf(5)\n- lvmconfig(8)\n- pvchange(8)\n- pvck(8)\n- pvcreate(8)\n- pvdisplay(8)\n- pvmove(8)\n- pvremove(8)\n- pvresize(8)\n- pvs(8)\n- can(8)\n- vgcfgbackup(8)\n- vgcfgrestore(8)\n- vgchange(8)\n- vgck(8)\n- vgcreate(8)\n- vgconvert(8)\n- vgdisplay(8)\n- export(8)\n- vgextend(8)\n- vgimport(8)\n- vgimportclone(8)\n- vgmerge(8)\n- vgmknodes(8)\n- vgreduce(8)\n- move(8)\n- vgrename(8)\n- vgs(8)\n- vgscan(8)\n- vgsplit(8)\n- lvcreate(8)\n- lvchange(8)\n- lvconvert(8)\n- lvdisplay(8)\n- lvextend(8)\n- lvremove(8)\n- name(8)\n- lvresize(8)\n- lvs(8)\n- lvscan(8)\n- lvm-fullreport(8)\n- lvm-lvpoll(8)\n- lvm2-activation-generator(8)\n- blkdeactivate(8)\n- lvmdump(8)\n- dmeventd(8)\n- lvmpolld(8)\n- lvmlockd(8)\n- lvmlockctl(8)\n- cmirrord(8)\n- lvmdbusd(8)\n- lvmsystemid(7)\n- lvmreport(7)\n- lvmraid(7)\n- lvmthin(7)\n- lvmcache(7)\n\n## Section Outline\n\n- **NAME** (2 lines)\n- **SYNOPSIS** (3 lines)\n- **DESCRIPTION** (15 lines)\n- **USAGE** (26 lines)\n- **OPTIONS** (1 lines) — 16 subsections\n  - -A --autobackup (12 lines)\n  - -d --debug (7 lines)\n  - -l --extents - (14 lines)\n  - -f --force (2 lines)\n  - -h --help (6 lines)\n  - --longhelp (2 lines)\n  - -n --nofsck (3 lines)\n  - --nolocking (2 lines)\n  - --noudevsync (7 lines)\n  - -q --quiet (10 lines)\n  - -r --resizefs (2 lines)\n  - -L --size - (6 lines)\n  - -t --test (5 lines)\n  - -v --verbose (3 lines)\n  - --version (2 lines)\n  - -y --yes (3 lines)\n- **VARIABLES** (16 lines)\n- **ENVIRONMENT VARIABLES** (3 lines)\n- **EXAMPLES** (1 lines) — 1 subsections\n  - lvreduce -l -3 vg00/lvol1 (1 lines)\n- **SEE ALSO** (21 lines)\n\n## Full Content\n\n### NAME\n\nlvreduce - Reduce the size of a logical volume\n\n### SYNOPSIS\n\nlvreduce optionargs positionargs\n[ optionargs ]\n\n### DESCRIPTION\n\nlvreduce  reduces  the  size of an LV. The freed logical extents are returned to the VG to be\nused by other LVs. A copy-on-write snapshot LV can also be reduced if less space is needed to\nhold  COW  blocks. Use lvconvert(8) to change the number of data images in a RAID or mirrored\nLV.\n\nBe careful when reducing an LV's size, because data in the reduced area is lost. Ensure  that\nany  file system on the LV is resized before running lvreduce so that the removed extents are\nnot in use by the file system.\n\nSizes will be rounded if necessary. For example, the LV size must be an exact number  of  ex‐\ntents, and the size of a striped segment must be a multiple of the number of stripes.\n\nIn  the usage section below, --size Size can be replaced with --extents Number.  See both de‐\nscriptions the options section.\n\n### USAGE\n\nlvreduce -L|--size [-]Size[m|UNIT] LV\n[ -l|--extents [-]Number[PERCENT] ]\n[ -A|--autobackup y|n ]\n[ -f|--force ]\n[ -n|--nofsck ]\n[ -r|--resizefs ]\n[    --noudevsync ]\n[    --reportformat basic|json ]\n[ COMMONOPTIONS ]\n\nCommon options for lvm:\n[ -d|--debug ]\n[ -h|--help ]\n[ -q|--quiet ]\n[ -t|--test ]\n[ -v|--verbose ]\n[ -y|--yes ]\n[    --commandprofile String ]\n[    --config String ]\n[    --driverloaded y|n ]\n[    --lockopt String ]\n[    --longhelp ]\n[    --nolocking ]\n[    --profile String ]\n[    --version ]\n\n### OPTIONS\n\n#### -A --autobackup\n\nSpecifies if metadata should be backed up automatically after a change.  Enabling this\nis strongly advised! See vgcfgbackup(8) for more information.\n\n--commandprofile String\nThe command profile to use for command configuration.  See lvm.conf(5) for more infor‐\nmation about profiles.\n\n--config String\nConfig settings for the command. These override lvm.conf settings.  The String arg\nuses the same format as lvm.conf, or may use section/field syntax.  See lvm.conf(5)\nfor more information about config.\n\n#### -d --debug\n\nSet debug level. Repeat from 1 to 6 times to increase the detail of messages sent to\nthe log file and/or syslog (if configured).\n\n--driverloaded y|n\nIf set to no, the command will not attempt to use device-mapper.  For testing and de‐\nbugging.\n\n#### -l --extents -\n\nSpecifies the new size of the LV in logical extents.  The --size and --extents options\nare alternate methods of specifying size.  The total number of physical extents used\nwill be greater when redundant data is needed for RAID levels.  An alternate syntax\nallows the size to be determined indirectly as a percentage of the size of a related\nVG, LV, or set of PVs. The suffix %VG denotes the total size of the VG, the suffix\n%FREE the remaining free space in the VG, and the suffix %PVS the free space in the\nspecified PVs.  For a snapshot, the size can be expressed as a percentage of the total\nsize of the origin LV with the suffix %ORIGIN (100%ORIGIN provides space for the whole\norigin).  When expressed as a percentage, the size defines an upper limit for the num‐\nber of logical extents in the new LV. The precise number of logical extents in the new\nLV is not determined until the command has completed.  When the plus + or minus - pre‐\nfix is used, the value is not an absolute size, but is relative and added or sub‐\ntracted from the current size.\n\n#### -f --force\n\nOverride various checks, confirmations and protections.  Use with extreme caution.\n\n#### -h --help\n\nDisplay help text.\n\n--lockopt String\nUsed to pass options for special cases to lvmlockd.  See lvmlockd(8) for more informa‐\ntion.\n\n#### --longhelp\n\nDisplay long help text.\n\n#### -n --nofsck\n\nDo not perform fsck before resizing filesystem when filesystem requires it. You may\nneed to use --force to proceed with this option.\n\n#### --nolocking\n\nDisable locking.\n\n#### --noudevsync\n\nDisables udev synchronisation. The process will not wait for notification from udev.\nIt will continue irrespective of any possible udev processing in the background. Only\nuse this if udev is not running or has rules that ignore the devices LVM creates.\n\n--profile String\nAn alias for --commandprofile or --metadataprofile, depending on the command.\n\n#### -q --quiet\n\nSuppress output and log messages. Overrides --debug and --verbose.  Repeat once to\nalso suppress any prompts with answer 'no'.\n\n--reportformat basic|json\nOverrides current output format for reports which is defined globally by the re‐\nport/outputformat setting in lvm.conf.  basic is the original format with columns and\nrows.  If there is more than one report per command, each report is prefixed with the\nreport name for identification. json produces report output in JSON format. See lvmre‐‐\nport(7) for more information.\n\n#### -r --resizefs\n\nResize underlying filesystem together with the LV using fsadm(8).\n\n#### -L --size -\n\nSpecifies the new size of the LV.  The --size and --extents options are alternate\nmethods of specifying size.  The total number of physical extents used will be greater\nwhen redundant data is needed for RAID levels.  When the plus + or minus - prefix is\nused, the value is not an absolute size, but is relative and added or subtracted from\nthe current size.\n\n#### -t --test\n\nRun in test mode. Commands will not update metadata.  This is implemented by disabling\nall metadata writing but nevertheless returning success to the calling function. This\nmay lead to unusual error messages in multi-stage operations if a tool relies on read‐\ning back metadata it believes has changed but hasn't.\n\n#### -v --verbose\n\nSet verbose level. Repeat from 1 to 4 times to increase the detail of messages sent to\nstdout and stderr.\n\n#### --version\n\nDisplay version information.\n\n#### -y --yes\n\nDo not prompt for confirmation interactively but always assume the answer yes. Use\nwith extreme caution.  (For automatic no, see -qq.)\n\n### VARIABLES\n\nLV\nLogical Volume name.  See lvm(8) for valid names.  An LV positional arg generally  in‐\ncludes the VG name and LV name, e.g. VG/LV.\n\nString\nSee the option description for information about the string content.\n\nSize[UNIT]\nSize is an input number that accepts an optional unit.  Input units are always treated\nas base two values, regardless of capitalization, e.g. 'k' and 'K' both refer to 1024.\nThe  default  input  unit  is specified by letter, followed by |UNIT.  UNIT represents\nother possible input units: bBsSkKmMgGtTpPeE.  b|B is bytes, s|S  is  sectors  of  512\nbytes,  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\nshould not be confused with the output control --units,  where  capital  letters  mean\nmultiple of 1000.)\n\n### ENVIRONMENT VARIABLES\n\nSee lvm(8) for information about environment variables used by lvm.  For example, LVMVGNAME\ncan generally be substituted for a required VG parameter.\n\n### EXAMPLES\n\nReduce the size of an LV by 3 logical extents:\n\n#### lvreduce -l -3 vg00/lvol1\n\n### SEE ALSO\n\nlvm(8) lvm.conf(5) lvmconfig(8)\n\npvchange(8) pvck(8) pvcreate(8) pvdisplay(8) pvmove(8) pvremove(8)  pvresize(8)  pvs(8)  pvs‐‐\ncan(8)\n\nvgcfgbackup(8)  vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8) vgconvert(8) vgdisplay(8) vg‐‐\nexport(8) vgextend(8) vgimport(8) vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8)  vgre‐‐\nmove(8) vgrename(8) vgs(8) vgscan(8) vgsplit(8)\n\nlvcreate(8)  lvchange(8)  lvconvert(8) lvdisplay(8) lvextend(8) lvreduce(8) lvremove(8) lvre‐‐\nname(8) lvresize(8) lvs(8) lvscan(8)\n\nlvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeactivate(8) lvmdump(8)\n\ndmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8) lvmdbusd(8)\n\nlvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)\n\n\n\nRed Hat, Inc.                     LVM TOOLS 2.03.11(2) (2021-01-08)                      LVREDUCE(8)\n\n"
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        "command": "lvreduce",
        "section": "8",
        "mode": "man",
        "summary": "lvreduce - Reduce the size of a logical volume",
        "synopsis": "lvreduce optionargs positionargs\n[ optionargs ]",
        "flags": [
            {
                "flag": "-A",
                "long": "--autobackup",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "-d",
                "long": "--debug",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "-l",
                "long": "--extents",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "-f",
                "long": "--force",
                "arg": null,
                "description": "Override various checks, confirmations and protections. Use with extreme caution."
            },
            {
                "flag": "-h",
                "long": "--help",
                "arg": null,
                "description": "Display help text. --lockopt String Used to pass options for special cases to lvmlockd. See lvmlockd(8) for more informa‐ tion."
            },
            {
                "flag": "",
                "long": "--longhelp",
                "arg": null,
                "description": "Display long help text."
            },
            {
                "flag": "-n",
                "long": "--nofsck",
                "arg": null,
                "description": "Do not perform fsck before resizing filesystem when filesystem requires it. You may need to use --force to proceed with this option."
            },
            {
                "flag": "",
                "long": "--nolocking",
                "arg": null,
                "description": "Disable locking."
            },
            {
                "flag": "",
                "long": "--noudevsync",
                "arg": null,
                "description": "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. --profile String An alias for --commandprofile or --metadataprofile, depending on the command."
            },
            {
                "flag": "-q",
                "long": "--quiet",
                "arg": null,
                "description": "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/outputformat 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."
            },
            {
                "flag": "-r",
                "long": "--resizefs",
                "arg": null,
                "description": "Resize underlying filesystem together with the LV using fsadm(8)."
            },
            {
                "flag": "-L",
                "long": "--size",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "-t",
                "long": "--test",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "-v",
                "long": "--verbose",
                "arg": null,
                "description": "Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent to stdout and stderr."
            },
            {
                "flag": "",
                "long": "--version",
                "arg": null,
                "description": "Display version information."
            },
            {
                "flag": "-y",
                "long": "--yes",
                "arg": null,
                "description": "Do not prompt for confirmation interactively but always assume the answer yes. Use with extreme caution. (For automatic no, see -qq.)"
            }
        ],
        "examples": [
            "Reduce the size of an LV by 3 logical extents:"
        ],
        "see_also": [
            {
                "name": "lvm",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvm/8/json"
            },
            {
                "name": "lvm.conf",
                "section": "5",
                "url": "https://www.chedong.com/phpMan.php/man/lvm.conf/5/json"
            },
            {
                "name": "lvmconfig",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmconfig/8/json"
            },
            {
                "name": "pvchange",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvchange/8/json"
            },
            {
                "name": "pvck",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvck/8/json"
            },
            {
                "name": "pvcreate",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvcreate/8/json"
            },
            {
                "name": "pvdisplay",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvdisplay/8/json"
            },
            {
                "name": "pvmove",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvmove/8/json"
            },
            {
                "name": "pvremove",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvremove/8/json"
            },
            {
                "name": "pvresize",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvresize/8/json"
            },
            {
                "name": "pvs",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvs/8/json"
            },
            {
                "name": "can",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/can/8/json"
            },
            {
                "name": "vgcfgbackup",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgcfgbackup/8/json"
            },
            {
                "name": "vgcfgrestore",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgcfgrestore/8/json"
            },
            {
                "name": "vgchange",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgchange/8/json"
            },
            {
                "name": "vgck",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgck/8/json"
            },
            {
                "name": "vgcreate",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgcreate/8/json"
            },
            {
                "name": "vgconvert",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgconvert/8/json"
            },
            {
                "name": "vgdisplay",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgdisplay/8/json"
            },
            {
                "name": "export",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/export/8/json"
            },
            {
                "name": "vgextend",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgextend/8/json"
            },
            {
                "name": "vgimport",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgimport/8/json"
            },
            {
                "name": "vgimportclone",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgimportclone/8/json"
            },
            {
                "name": "vgmerge",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgmerge/8/json"
            },
            {
                "name": "vgmknodes",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgmknodes/8/json"
            },
            {
                "name": "vgreduce",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgreduce/8/json"
            },
            {
                "name": "move",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/move/8/json"
            },
            {
                "name": "vgrename",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgrename/8/json"
            },
            {
                "name": "vgs",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgs/8/json"
            },
            {
                "name": "vgscan",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgscan/8/json"
            },
            {
                "name": "vgsplit",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgsplit/8/json"
            },
            {
                "name": "lvcreate",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvcreate/8/json"
            },
            {
                "name": "lvchange",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvchange/8/json"
            },
            {
                "name": "lvconvert",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvconvert/8/json"
            },
            {
                "name": "lvdisplay",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvdisplay/8/json"
            },
            {
                "name": "lvextend",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvextend/8/json"
            },
            {
                "name": "lvremove",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvremove/8/json"
            },
            {
                "name": "name",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/name/8/json"
            },
            {
                "name": "lvresize",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvresize/8/json"
            },
            {
                "name": "lvs",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvs/8/json"
            },
            {
                "name": "lvscan",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvscan/8/json"
            },
            {
                "name": "lvm-fullreport",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvm-fullreport/8/json"
            },
            {
                "name": "lvm-lvpoll",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvm-lvpoll/8/json"
            },
            {
                "name": "lvm2-activation-generator",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvm2-activation-generator/8/json"
            },
            {
                "name": "blkdeactivate",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/blkdeactivate/8/json"
            },
            {
                "name": "lvmdump",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmdump/8/json"
            },
            {
                "name": "dmeventd",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/dmeventd/8/json"
            },
            {
                "name": "lvmpolld",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmpolld/8/json"
            },
            {
                "name": "lvmlockd",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmlockd/8/json"
            },
            {
                "name": "lvmlockctl",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmlockctl/8/json"
            },
            {
                "name": "cmirrord",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/cmirrord/8/json"
            },
            {
                "name": "lvmdbusd",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmdbusd/8/json"
            },
            {
                "name": "lvmsystemid",
                "section": "7",
                "url": "https://www.chedong.com/phpMan.php/man/lvmsystemid/7/json"
            },
            {
                "name": "lvmreport",
                "section": "7",
                "url": "https://www.chedong.com/phpMan.php/man/lvmreport/7/json"
            },
            {
                "name": "lvmraid",
                "section": "7",
                "url": "https://www.chedong.com/phpMan.php/man/lvmraid/7/json"
            },
            {
                "name": "lvmthin",
                "section": "7",
                "url": "https://www.chedong.com/phpMan.php/man/lvmthin/7/json"
            },
            {
                "name": "lvmcache",
                "section": "7",
                "url": "https://www.chedong.com/phpMan.php/man/lvmcache/7/json"
            }
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            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "SYNOPSIS",
                "lines": 3,
                "subsections": []
            },
            {
                "name": "DESCRIPTION",
                "lines": 15,
                "subsections": []
            },
            {
                "name": "USAGE",
                "lines": 26,
                "subsections": []
            },
            {
                "name": "OPTIONS",
                "lines": 1,
                "subsections": [
                    {
                        "name": "-A --autobackup",
                        "lines": 12,
                        "flag": "-A",
                        "long": "--autobackup"
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                    {
                        "name": "-d --debug",
                        "lines": 7,
                        "flag": "-d",
                        "long": "--debug"
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                        "name": "-l --extents -",
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                        "long": "--extents"
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                        "name": "-f --force",
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                        "flag": "-f",
                        "long": "--force"
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                    {
                        "name": "-h --help",
                        "lines": 6,
                        "flag": "-h",
                        "long": "--help"
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                    {
                        "name": "--longhelp",
                        "lines": 2,
                        "long": "--longhelp"
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                        "name": "-n --nofsck",
                        "lines": 3,
                        "flag": "-n",
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                    {
                        "name": "--nolocking",
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                        "long": "--nolocking"
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                    {
                        "name": "--noudevsync",
                        "lines": 7,
                        "long": "--noudevsync"
                    },
                    {
                        "name": "-q --quiet",
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                        "flag": "-q",
                        "long": "--quiet"
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                    {
                        "name": "-r --resizefs",
                        "lines": 2,
                        "flag": "-r",
                        "long": "--resizefs"
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                    {
                        "name": "-L --size -",
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                        "flag": "-L",
                        "long": "--size"
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                    {
                        "name": "-t --test",
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                        "flag": "-t",
                        "long": "--test"
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                    {
                        "name": "-v --verbose",
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                        "flag": "-v",
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                    {
                        "name": "--version",
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                    {
                        "name": "-y --yes",
                        "lines": 3,
                        "flag": "-y",
                        "long": "--yes"
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            {
                "name": "VARIABLES",
                "lines": 16,
                "subsections": []
            },
            {
                "name": "ENVIRONMENT VARIABLES",
                "lines": 3,
                "subsections": []
            },
            {
                "name": "EXAMPLES",
                "lines": 1,
                "subsections": [
                    {
                        "name": "lvreduce -l -3 vg00/lvol1",
                        "lines": 1
                    }
                ]
            },
            {
                "name": "SEE ALSO",
                "lines": 21,
                "subsections": []
            }
        ]
    }
}