{
    "content": [
        {
            "type": "text",
            "text": "# vgmknodes (man)\n\n## NAME\n\nvgmknodes — Create the special files for volume group devices in /dev\n\n## DESCRIPTION\n\nvgmknodes  checks the LVM device nodes in /dev that are needed for active LVs and creates any\nthat are missing and removes unused ones.\n\n## Sections\n\n- **NAME**\n- **SYNOPSIS** (1 subsections)\n- **DESCRIPTION**\n- **USAGE** (1 subsections)\n- **OPTIONS** (12 subsections)\n- **VARIABLES**\n- **ENVIRONMENT VARIABLES**\n- **SEE ALSO**\n\nUse structuredContent.sections for detailed options, examples, and full documentation.\n"
        }
    ],
    "structuredContent": {
        "command": "vgmknodes",
        "section": "",
        "mode": "man",
        "summary": "vgmknodes — Create the special files for volume group devices in /dev",
        "synopsis": "",
        "tldr_summary": null,
        "tldr_examples": [],
        "tldr_source": null,
        "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). --devices PV Restricts the devices that are visible and accessible to the command. Devices not listed will appear to be missing. This option can be repeated, or accepts a comma sep‐ arated 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/usedevicesfile settings. --driverloaded y|n If set to no, the command will not attempt to use device-mapper. For testing and de‐ bugging."
            },
            {
                "flag": "-h",
                "long": "--help",
                "arg": null,
                "description": "Display help text."
            },
            {
                "flag": "",
                "long": "--ignorelockingfailure",
                "arg": null,
                "description": "Allows a command to continue with read-only metadata operations after locking fail‐ ures. --journal String Record information in the systemd journal. This information is in addition to infor‐ mation 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 informa‐ tion."
            },
            {
                "flag": "",
                "long": "--longhelp",
                "arg": null,
                "description": "Display long help text."
            },
            {
                "flag": "",
                "long": "--nohints",
                "arg": null,
                "description": "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."
            },
            {
                "flag": "",
                "long": "--nolocking",
                "arg": null,
                "description": "Disable locking. Use with caution, concurrent commands may produce incorrect results. --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'."
            },
            {
                "flag": "",
                "long": "--refresh",
                "arg": null,
                "description": "If the LV is active, reload its metadata. This is not necessary in normal operation, but may be useful if something has gone wrong, or if some form of manual LV sharing is being used. --reportformat basic|json Overrides current output format for reports which is defined globally by the re‐ port/outputformat setting in lvm.conf(5). basic is the original format with columns and rows. If there is more than one report per command, each report is prefixed with the report name for identification. json produces report output in JSON format. See lvmreport(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": "lvmdevices",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvmdevices/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": "pvscan",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/pvscan/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": "vgexport",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgexport/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": "vgimportdevices",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgimportdevices/8/json"
            },
            {
                "name": "vgmerge",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgmerge/8/json"
            },
            {
                "name": "vgreduce",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgreduce/8/json"
            },
            {
                "name": "vgremove",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/vgremove/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": "lvrename",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/lvrename/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": "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": "fsadm",
                "section": "8",
                "url": "https://www.chedong.com/phpMan.php/man/fsadm/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"
            }
        ],
        "section_outline": [
            {
                "name": "NAME",
                "lines": 2,
                "subsections": []
            },
            {
                "name": "SYNOPSIS",
                "lines": 1,
                "subsections": [
                    {
                        "name": "vgmknodes",
                        "lines": 3
                    }
                ]
            },
            {
                "name": "DESCRIPTION",
                "lines": 6,
                "subsections": []
            },
            {
                "name": "USAGE",
                "lines": 1,
                "subsections": [
                    {
                        "name": "vgmknodes",
                        "lines": 26
                    }
                ]
            },
            {
                "name": "OPTIONS",
                "lines": 9,
                "subsections": [
                    {
                        "name": "-d --debug",
                        "lines": 17,
                        "flag": "-d",
                        "long": "--debug"
                    },
                    {
                        "name": "-h --help",
                        "lines": 2,
                        "flag": "-h",
                        "long": "--help"
                    },
                    {
                        "name": "--ignorelockingfailure",
                        "lines": 13,
                        "long": "--ignorelockingfailure"
                    },
                    {
                        "name": "--longhelp",
                        "lines": 2,
                        "long": "--longhelp"
                    },
                    {
                        "name": "--nohints",
                        "lines": 4,
                        "long": "--nohints"
                    },
                    {
                        "name": "--nolocking",
                        "lines": 6,
                        "long": "--nolocking"
                    },
                    {
                        "name": "-q --quiet",
                        "lines": 3,
                        "flag": "-q",
                        "long": "--quiet"
                    },
                    {
                        "name": "--refresh",
                        "lines": 11,
                        "long": "--refresh"
                    },
                    {
                        "name": "-t --test",
                        "lines": 5,
                        "flag": "-t",
                        "long": "--test"
                    },
                    {
                        "name": "-v --verbose",
                        "lines": 3,
                        "flag": "-v",
                        "long": "--verbose"
                    },
                    {
                        "name": "--version",
                        "lines": 2,
                        "long": "--version"
                    },
                    {
                        "name": "-y --yes",
                        "lines": 3,
                        "flag": "-y",
                        "long": "--yes"
                    }
                ]
            },
            {
                "name": "VARIABLES",
                "lines": 18,
                "subsections": []
            },
            {
                "name": "ENVIRONMENT VARIABLES",
                "lines": 3,
                "subsections": []
            },
            {
                "name": "SEE ALSO",
                "lines": 20,
                "subsections": []
            }
        ],
        "sections": {
            "NAME": {
                "content": "vgmknodes — Create the special files for volume group devices in /dev\n",
                "subsections": []
            },
            "SYNOPSIS": {
                "content": "",
                "subsections": [
                    {
                        "name": "vgmknodes",
                        "content": "[ optionargs ]\n[ positionargs ]\n"
                    }
                ]
            },
            "DESCRIPTION": {
                "content": "vgmknodes  checks the LVM device nodes in /dev that are needed for active LVs and creates any\nthat are missing and removes unused ones.\n\nThis command should not usually be needed if all the  system  components  are  interoperating\ncorrectly.\n",
                "subsections": []
            },
            "USAGE": {
                "content": "",
                "subsections": [
                    {
                        "name": "vgmknodes",
                        "content": "[    --ignorelockingfailure ]\n[    --refresh ]\n[    --reportformat basic|json ]\n[ COMMONOPTIONS ]\n[ VG|LV|Tag ... ]\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[    --devices PV ]\n[    --devicesfile String ]\n[    --driverloaded y|n ]\n[    --journal String ]\n[    --lockopt String ]\n[    --longhelp ]\n[    --nohints ]\n[    --nolocking ]\n[    --profile String ]\n[    --version ]\n"
                    }
                ]
            },
            "OPTIONS": {
                "content": "--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(5) settings.  The String arg\nuses the same format as lvm.conf(5), 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--devices PV\nRestricts  the  devices  that  are visible and accessible to the command.  Devices not\nlisted will appear to be missing. This option can be repeated, or accepts a comma sep‐\narated list of devices. This overrides the devices file.\n\n--devicesfile String\nA file listing devices that LVM should use.  The file must exist in  /etc/lvm/devices/\nand  is  managed  with  the lvmdevices(8) command.  This overrides the lvm.conf(5) de‐\nvices/devicesfile and devices/usedevicesfile settings.\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": "-h --help",
                        "content": "Display help text.\n",
                        "flag": "-h",
                        "long": "--help"
                    },
                    {
                        "name": "--ignorelockingfailure",
                        "content": "Allows  a  command  to continue with read-only metadata operations after locking fail‐\nures.\n\n--journal String\nRecord information in the systemd journal.  This information is in addition to  infor‐\nmation enabled by the lvm.conf log/journal setting.  command: record information about\nthe  command.   output: record the default command output.  debug: record full command\ndebugging.\n\n--lockopt String\nUsed to pass options for special cases to lvmlockd.  See lvmlockd(8) for more informa‐\ntion.\n",
                        "long": "--ignorelockingfailure"
                    },
                    {
                        "name": "--longhelp",
                        "content": "Display long help text.\n",
                        "long": "--longhelp"
                    },
                    {
                        "name": "--nohints",
                        "content": "Do not use the hints file to locate devices for PVs. A command may read  more  devices\nto find PVs when hints are not used. The command will still perform standard hint file\ninvalidation where appropriate.\n",
                        "long": "--nohints"
                    },
                    {
                        "name": "--nolocking",
                        "content": "Disable  locking. Use with caution, concurrent commands may produce incorrect results.\n\n\n--profile String\nAn alias for --commandprofile or --metadataprofile, depending on the command.\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",
                        "flag": "-q",
                        "long": "--quiet"
                    },
                    {
                        "name": "--refresh",
                        "content": "If  the LV is active, reload its metadata.  This is not necessary in normal operation,\nbut may be useful if something has gone wrong, or if some form of manual LV sharing is\nbeing used.\n\n--reportformat basic|json\nOverrides current output format for reports which  is  defined  globally  by  the  re‐\nport/outputformat  setting in lvm.conf(5).  basic is the original format with columns\nand rows.  If there is more than one report per command, each report is prefixed  with\nthe  report  name  for identification. json produces report output in JSON format. See\nlvmreport(7) for more information.\n",
                        "long": "--refresh"
                    },
                    {
                        "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     Volume Group name.  See lvm(8) for valid names.\n\nLV     Logical 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\nTag    Tag name.  See lvm(8) for information about tag names and using tags in place of a VG,\nLV or PV.\n\nString See 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: b|B is bytes, s|S is sectors of 512 bytes, k|K is KiB, m|M\nis MiB, g|G is GiB, t|T is TiB, p|P is PiB, e|E is EiB.  (This should not be  confused\nwith the output control --units, where capital letters mean multiple 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",
                "subsections": []
            },
            "SEE ALSO": {
                "content": "lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(8),\n\npvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8),\npvscan(8),\n\nvgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgcreate(8), vgconvert(8),\nvgdisplay(8), vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgimportdevices(8),\nvgmerge(8), vgmknodes(8), vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8),\nvgsplit(8),\n\nlvcreate(8), lvchange(8), lvconvert(8), lvdisplay(8), lvextend(8), lvreduce(8), lvremove(8),\nlvrename(8), lvresize(8), lvs(8), lvscan(8),\n\nlvm-fullreport(8), lvm-lvpoll(8), blkdeactivate(8), lvmdump(8),\n\ndmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8), lvmdbusd(8), fsadm(8),\n\nlvmsystemid(7), lvmreport(7), lvmraid(7), lvmthin(7), lvmcache(7)\n\nRed Hat, Inc.                     LVM TOOLS 2.03.16(2) (2022-05-18)                     VGMKNODES(8)",
                "subsections": []
            }
        }
    }
}