vgextend(8) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | USAGE | OPTIONS | VARIABLES | ENVIRONMENT VARIABLES | EXAMPLES | SEE ALSO | COLOPHON

VGEXTEND(8)              System Manager's Manual             VGEXTEND(8)

NAME         top

       vgextend — Add physical volumes to a volume group

SYNOPSIS         top

       vgextend position_args
           [ option_args ]

DESCRIPTION         top

       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         top

       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         top


       -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         top

       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         top

       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         top

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

SEE ALSO         top

       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)

COLOPHON         top

       This page is part of the lvm2 (Logical Volume Manager 2) project.
       Information about the project can be found at 
       ⟨http://www.sourceware.org/lvm2/⟩.  If you have a bug report for
       this manual page, see ⟨https://github.com/lvmteam/lvm2/issues⟩.
       This page was obtained from the project's upstream Git repository
       ⟨git://sourceware.org/git/lvm2.git⟩ on 2024-06-14.  (At that
       time, the date of the most recent commit that was found in the
       repository was 2024-06-11.)  If you discover any rendering
       problems in this HTML version of the page, or you believe there
       is a better or more up-to-date source for the page, or you have
       corrections or improvements to the information in this COLOPHON
       (which is not part of the original manual page), send a mail to
       [email protected]

Red Hat, Inc.     LVM TOOLS 2.03.25(2)-git (2024-05-16)      VGEXTEND(8)

Pages that refer to this page: lvchange(8)lvconvert(8)lvcreate(8)lvdisplay(8)lvextend(8)lvm(8)lvmconfig(8)lvmdevices(8)lvmdiskscan(8)lvm-fullreport(8)lvm-lvpoll(8)lvreduce(8)lvremove(8)lvrename(8)lvresize(8)lvs(8)lvscan(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)vgconvert(8)vgcreate(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)