{
    "mode": "man",
    "parameter": "VGCONVERT",
    "section": "8",
    "url": "https://www.chedong.com/phpMan.php/man/VGCONVERT/8/json",
    "generated": "2026-05-30T09:07:36Z",
    "synopsis": "vgconvert positionargs\n[ optionargs ]",
    "sections": {
        "NAME": {
            "content": "vgconvert - Change volume group metadata format\n",
            "subsections": []
        },
        "SYNOPSIS": {
            "content": "vgconvert positionargs\n[ optionargs ]\n",
            "subsections": []
        },
        "DESCRIPTION": {
            "content": "vgconvert is no longer a part of LVM.  It was removed along with support for the LVM1 format.\nUse an older version of LVM to convert VGs from the LVM1 format to LVM2.\n",
            "subsections": []
        },
        "USAGE": {
            "content": "vgconvert VG ...\n[ -f|--force ]\n[ -M|--metadatatype lvm2 ]\n[    --labelsector Number ]\n[    --bootloaderareasize Size[m|UNIT] ]\n[    --pvmetadatacopies 0|1|2 ]\n[    --metadatasize Size[m|UNIT] ]\n[    --reportformat basic|json ]\n[ COMMONOPTIONS ]\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",
            "subsections": []
        },
        "OPTIONS": {
            "content": "--bootloaderareasize Size[m|UNIT]\nReserve space for the bootloader between the LVM metadata area and the first PE.  The\nbootloader area is reserved for bootloaders to embed their own data or metadata; LVM\nwill not use it.  The bootloader area begins where the first PE would otherwise be lo‐\ncated.  The first PE is moved out by the size of the bootloader area, and then moved\nout further if necessary to match the data alignment.  The start of the bootloader\narea is always aligned, see also --dataalignment and --dataalignmentoffset. The boot‐\nloader area may be larger than requested due to the alignment, but it's never less\nthan the requested size.  To see the bootloader area start and size of an existing PV\nuse pvs -o +pvbastart,pvbasize.\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",
            "subsections": [
                {
                    "name": "-d --debug",
                    "content": "Set 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",
                    "flag": "-d",
                    "long": "--debug"
                },
                {
                    "name": "-f --force",
                    "content": "Override various checks, confirmations and protections.  Use with extreme caution.\n",
                    "flag": "-f",
                    "long": "--force"
                },
                {
                    "name": "-h --help",
                    "content": "Display help text.\n\n--labelsector Number\nBy default the PV is labelled with an LVM2 identifier in its second sector (sector 1).\nThis lets you use a different sector near the start of the disk (between 0 and 3 in‐\nclusive - see LABELSCANSECTORS in the source). Use with care.\n\n--lockopt String\nUsed to pass options for special cases to lvmlockd.  See lvmlockd(8) for more informa‐\ntion.\n",
                    "flag": "-h",
                    "long": "--help"
                },
                {
                    "name": "--longhelp",
                    "content": "Display long help text.\n\n--metadatasize Size[m|UNIT]\nThe approximate amount of space used for each VG metadata area.  The size may be\nrounded.\n",
                    "long": "--longhelp"
                },
                {
                    "name": "-M --metadatatype",
                    "content": "Specifies the type of on-disk metadata to use.  lvm2 (or just 2) is the current, stan‐\ndard format.  lvm1 (or just 1) is no longer used.\n",
                    "flag": "-M",
                    "long": "--metadatatype"
                },
                {
                    "name": "--nolocking",
                    "content": "Disable locking.\n\n--profile String\nAn alias for --commandprofile or --metadataprofile, depending on the command.\n\n--pvmetadatacopies 0|1|2\nThe number of metadata areas to set aside on a PV for storing VG metadata.  When 2,\none copy of the VG metadata is stored at the front of the PV and a second copy is\nstored at the end.  When 1, one copy of the VG metadata is stored at the front of the\nPV.  When 0, no copies of the VG metadata are stored on the given PV.  This may be\nuseful in VGs containing many PVs (this places limitations on the ability to use\nvgsplit later.)\n",
                    "long": "--nolocking"
                },
                {
                    "name": "-q --quiet",
                    "content": "Suppress 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",
                    "flag": "-q",
                    "long": "--quiet"
                },
                {
                    "name": "-t --test",
                    "content": "Run 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",
                    "flag": "-t",
                    "long": "--test"
                },
                {
                    "name": "-v --verbose",
                    "content": "Set verbose level. Repeat from 1 to 4 times to increase the detail of messages sent to\nstdout and stderr.\n",
                    "flag": "-v",
                    "long": "--verbose"
                },
                {
                    "name": "--version",
                    "content": "Display version information.\n",
                    "long": "--version"
                },
                {
                    "name": "-y --yes",
                    "content": "Do not prompt for confirmation interactively but always assume the answer yes. Use\nwith extreme caution.  (For automatic no, see -qq.)\n",
                    "flag": "-y",
                    "long": "--yes"
                }
            ]
        },
        "VARIABLES": {
            "content": "VG\nVolume Group name.  See lvm(8) for valid names.\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",
            "subsections": []
        },
        "ENVIRONMENT VARIABLES": {
            "content": "See lvm(8) for information about environment variables used by lvm.  For example, LVMVGNAME\ncan generally be substituted for a required VG parameter.\n\n",
            "subsections": []
        },
        "SEE ALSO": {
            "content": "lvm(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)                     VGCONVERT(8)",
            "subsections": []
        }
    },
    "summary": "vgconvert - Change volume group metadata format",
    "flags": [
        {
            "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": "-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. --labelsector Number By default the PV is labelled with an LVM2 identifier in its second sector (sector 1). This lets you use a different sector near the start of the disk (between 0 and 3 in‐ clusive - see LABELSCANSECTORS in the source). Use with care. --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. --metadatasize Size[m|UNIT] The approximate amount of space used for each VG metadata area. The size may be rounded."
        },
        {
            "flag": "-M",
            "long": "--metadatatype",
            "arg": null,
            "description": "Specifies the type of on-disk metadata to use. lvm2 (or just 2) is the current, stan‐ dard format. lvm1 (or just 1) is no longer used."
        },
        {
            "flag": "",
            "long": "--nolocking",
            "arg": null,
            "description": "Disable locking. --profile String An alias for --commandprofile or --metadataprofile, depending on the command. --pvmetadatacopies 0|1|2 The number of metadata areas to set aside on a PV for storing VG metadata. When 2, one copy of the VG metadata is stored at the front of the PV and a second copy is stored at the end. When 1, one copy of the VG metadata is stored at the front of the PV. When 0, no copies of the VG metadata are stored on the given PV. This may be useful in VGs containing many PVs (this places limitations on the ability to use vgsplit later.)"
        },
        {
            "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": "-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": [],
    "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": "lvreduce",
            "section": "8",
            "url": "https://www.chedong.com/phpMan.php/man/lvreduce/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"
        }
    ]
}