plucky (8) vgmknodes.8.gz

NAME

       vgmknodes — Create the special files for volume group devices in /dev

SYNOPSIS

       vgmknodes
           [ option_args ]
           [ position_args ]

DESCRIPTION

       vgmknodes  checks  the  LVM  device nodes in /dev that are needed for active LVs and creates any that are
       missing and removes unused ones.

       This command should not usually be needed if all the system components are interoperating correctly.

       See also the notes at the end of this manual page for using vgmknodes together with udev.

USAGE

       vgmknodes
           [    --ignorelockingfailure ]
           [    --refresh ]
           [    --reportformat basic|json|json_std ]
           [ COMMON_OPTIONS ]
           [ VG|LV|Tag ... ]

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

OPTIONS

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

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

       -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).

       --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 separated list of devices.
              This overrides the devices file.

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

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

       -h|--help
              Display help text.

       --ignorelockingfailure
              Allows a command to continue with read-only metadata operations after locking failures.

       --journal String
              Record information in the systemd journal.  This information is in addition to information enabled
              by  the  lvm.conf  log/journal  setting.   command: record information about the command.  output:
              record the default command output.  debug: record full command debugging.

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

       --longhelp
              Display long help text.

       --nohints
              Do not use the hints file to locate devices for PVs. A command may read more devices to  find  PVs
              when  hints  are  not  used.  The command will still perform standard hint file invalidation where
              appropriate.

       --nolocking
              Disable locking. Use with caution, concurrent commands may produce incorrect results.

       --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'.

       --refresh
              If the LV is active, reload its metadata.  In an environment where udev is used to manage the /dev
              content, usage of this option is highly recommended. This is because refresh also regenerates udev
              events  for  an  LV  based  on  which  existing udev rules are applied to set the /dev content and
              permissions.  Also, this operation may be useful if something has gone wrong, or if some  form  of
              manual LV sharing is being used.

       --reportformat basic|json|json_std
              Overrides  current output format for reports which is defined globally by the report/output_format
              setting in lvm.conf(5).  basic is the original format with columns and rows.   If  there  is  more
              than one report per command, each report is prefixed with the report name for identification. json
              produces report output in JSON format. json_std produces report output in  JSON  format  which  is
              more compliant with JSON standard.  See lvmreport(7) for more information.

       -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 reading back metadata it
              believes has changed but hasn't.

       -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

       VG     Volume Group name.  See lvm(8) for valid names.

       LV     Logical Volume name.  See lvm(8) for valid names.  An LV positional arg generally includes the  VG
              name and LV name, e.g. VG/LV.

       Tag    Tag name.  See lvm(8) for information about tag names and using tags in place of a VG, LV or PV.

       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: 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.

NOTES

       When using udev(7) to manage the /dev content, it is also highly recommended to use the --refresh option.
       This way, the necessary udev events are generated too and associated udev rules are properly applied.  If
       the --refresh option is not used in this case, then LVM recreates the /dev content directly and udev will
       not have proper records about affected symlinks and nodes. Also, any node  permissions  defined  by  udev
       rules are not applied. This, in turn, may cause problems for other system components that rely on reading
       the udev database to get the list of /dev symlinks and nodes and which rely on the permissions  based  on
       udev rules.

SEE ALSO

       lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(8),

       pvchange(8), pvck(8), pvcreate(8), pvdisplay(8), pvmove(8), pvremove(8), pvresize(8), pvs(8), pvscan(8),

       vgcfgbackup(8), vgcfgrestore(8), vgchange(8), vgck(8), vgcreate(8), vgconvert(8), vgdisplay(8),
       vgexport(8), vgextend(8), vgimport(8), vgimportclone(8), vgimportdevices(8), vgmerge(8), vgmknodes(8),
       vgreduce(8), vgremove(8), vgrename(8), vgs(8), vgscan(8), vgsplit(8),

       lvcreate(8), lvchange(8), lvconvert(8), lvdisplay(8), lvextend(8), lvreduce(8), lvremove(8), lvrename(8),
       lvresize(8), lvs(8), lvscan(8),

       lvm-fullreport(8), lvm-lvpoll(8), blkdeactivate(8), lvmdump(8),

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

       lvmsystemid(7), lvmreport(7), lvmcache(7), lvmraid(7), lvmthin(7), lvmvdo(7), lvmautoactivation(7)