# vgconvert

## NAME



           vgconvert — Change volume group metadata format
    


## SYNOPSIS



           **vgconvert** _position_args_
               [ _option_args_ ]
    


## DESCRIPTION



           vgconvert is no longer a part of LVM.  It was removed along with
           support for the LVM1 format.  Use an older version of LVM to
           convert VGs from the LVM1 format to LVM2.
    


## USAGE



           **vgconvert** _VG_ ...
               [ **-f** |**--force**]
               [ **-M** |**--metadatatype lvm2**]
               [    **--labelsector** _Number_ ]
               [    **--bootloaderareasize** _Size_[m|UNIT] ]
               [    **--pvmetadatacopies 0** |**1** |**2**]
               [    **--metadatasize** _Size_[m|UNIT] ]
               [    **--reportformat basic** |**json**]
               [ 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



    
           **--bootloaderareasize** _Size_[m|UNIT]
                  Reserve  space  for the bootloader between the LVM metadata
                  area and the first PE.  The bootloader area is reserved for
                  bootloaders to embed their own data or metadata;  LVM  will
                  not  use it.  The bootloader area begins where the first PE
                  would otherwise be located.  The first PE is moved  out  by
                  the size of the bootloader area, and then moved out further
                  if necessary to match the data alignment.  The start of the
                  bootloader area is always aligned, see also --dataalignment
                  and  --dataalignmentoffset.  The  bootloader  area  may  be
                  larger than requested due to the alignment, but it's  never
                  less  than  the requested size.  To see the bootloader area
                  start  and  size   of   an   existing   PV   use   pvs   -o
                  +pv_ba_start,pv_ba_size.
    
           **--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_
                  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.
    
           **--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.
    
           **-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.
    
           _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.
    


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