# vgextend

## NAME



           vgextend — Add physical volumes to a volume group
    


## SYNOPSIS



           **vgextend** _position_args_
               [ _option_args_ ]
    


## DESCRIPTION



           vgextend adds one or more PVs to a VG. This increases the space
           available for LVs in the VG.
    
           Also, PVs that have gone missing and then returned, e.g. due to a
           transient device failure, can be added back to the VG without re-
           initializing them (see --restoremissing).
    
           If the specified PVs have not yet been initialized with pvcreate,
           vgextend will initialize them. In this case pvcreate options can
           be used, e.g.  --labelsector, --metadatasize, --metadataignore,
           --pvmetadatacopies, --dataalignment, --dataalignmentoffset.
    


## USAGE



           **vgextend** _VG PV_ ...
               [ **-A** |**--autobackup y** |**n**]
               [ **-f** |**--force**]
               [ **-Z** |**--zero y** |**n**]
               [ **-M** |**--metadatatype lvm2**]
               [    **--labelsector** _Number_ ]
               [    **--metadatasize** _Size_[m|UNIT] ]
               [    **--pvmetadatacopies 0** |**1** |**2**]
               [    **--metadataignore y** |**n**]
               [    **--dataalignment** _Size_[k|UNIT] ]
               [    **--dataalignmentoffset** _Size_[k|UNIT] ]
               [    **--reportformat basic** |**json**]
               [    **--restoremissing**]
               [ COMMON_OPTIONS ]
    
           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



    
           **-A** |**--autobackup y** |**n**
                  Specifies  if  metadata  should  be backed up automatically
                  after a change.  Enabling this  is  strongly  advised!  See
                  vgcfgbackup(8) for more information.
    
           **--commandprofile** _String_
                  The  command profile to use for command configuration.  See
                  lvm.conf(5) for more 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.
    
           **--dataalignment** _Size_[k|UNIT]
                  Align the start of a PV data area with a multiple  of  this
                  number.   To  see the location of the first Physical Extent
                  (PE) of an existing PV, use pvs -o +pe_start. In  addition,
                  it   may   be   shifted   by   an   alignment  offset,  see
                  --dataalignmentoffset.  Also specify an appropriate PE size
                  when creating a VG.
    
           **--dataalignmentoffset** _Size_[k|UNIT]
                  Shift the start of the PV  data  area  by  this  additional
                  offset.
    
           **-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_
                  Devices  that  the  command  can  use.  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.
    
           **-f** |**--force**...
                  Override various  checks,  confirmations  and  protections.
                  Use with extreme caution.
    
           **-h** |**--help**
                  Display help text.
    
           **--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.
    
           **--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
                  inclusive - see LABEL_SCAN_SECTORS in the source). Use with
                  care.
    
           **--lockopt** _String_
                  Used  to  pass  options for special cases to lvmlockd.  See
                  lvmlockd(8) for more information.
    
           **--longhelp**
                  Display long help text.
    
           **--metadataignore y** |**n**
                  Specifies the metadataignore property of  a  PV.   If  yes,
                  metadata  areas  on  the  PV  are ignored, and lvm will not
                  store metadata in the metadata areas of the PV.  If no, lvm
                  will store metadata on the PV.
    
           **--metadatasize** _Size_[m|UNIT]
                  The approximate amount of space used for each  VG  metadata
                  area.  The size may be rounded.
    
           **-M** |**--metadatatype lvm2**
                  Specifies  the  type  of on-disk metadata to use.  **lvm2**(or
                  just **2**) is the current, standard format.  **lvm1**(or just  **1**)
                  is no longer used.
    
           **--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.
    
           **--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.)
    
           **-q** |**--quiet**...
                  Suppress  output  and  log  messages. Overrides --debug and
                  --verbose.  Repeat once to also suppress any  prompts  with
                  answer 'no'.
    
           **--reportformat basic** |**json**
                  Overrides  current  output  format  for  reports  which  is
                  defined globally by  the  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.   See
                  lvmreport(7) for more information.
    
           **--restoremissing**
                  Add  a  PV back into a VG after the PV was missing and then
                  returned, e.g. due to a transient failure. The  PV  is  not
                  reinitialized.
    
           **-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.)
    
           **-Z** |**--zero y** |**n**
                  Controls if the first 4 sectors (2048 bytes) of the  device
                  are  wiped.   The  default  is to wipe these sectors unless
                  either or both of --restorefile or --uuid are specified.
    


## VARIABLES



           _VG_     Volume Group name.  See lvm(8) for valid names.
    
           _PV_     Physical Volume name, a device path under /dev.  For
                  commands managing physical extents, a PV positional arg
                  generally accepts a suffix indicating a range (or multiple
                  ranges) of physical extents (PEs). When the first PE is
                  omitted, it defaults to the start of the device, and when
                  the last PE is omitted it defaults to end.  Start and end
                  range (inclusive): _PV_[**:**_PE_**-**_PE_]...  Start and length range
                  (counting from 0): _PV_[**:**_PE_**+**_PE_]...
    
           _String_ See the option description for information about the string
                  content.
    
           _Size_[UNIT]
                  Size is an input number that accepts an optional unit.
                  Input units are always treated as base two values,
                  regardless of capitalization, e.g. 'k' and 'K' both refer
                  to 1024.  The default input unit is specified by letter,
                  followed by |UNIT.  UNIT represents other possible input
                  units: **b** |**B** is bytes, **s** |**S** is sectors of 512 bytes, **k** |**K** is
                  KiB, **m** |**M** is MiB, **g** |**G** is GiB, **t** |**T** is TiB, **p** |**P** is PiB, **e** |**E** is
                  EiB.  (This should not be confused with the output control
                  --units, where capital letters mean multiple of 1000.)
    


## ENVIRONMENT VARIABLES



           See lvm(8) for information about environment variables used by
           lvm.  For example, LVM_VG_NAME can generally be substituted for a
           required VG parameter.
    


## EXAMPLES



           Add two PVs to a VG.
           **vgextend vg00 /dev/sda4 /dev/sdn1**
    


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