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VGCONVERT(8)                System Manager's Manual               VGCONVERT(8)
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 sup-
       port 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 bootload-
              ers  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 boot-
              loader 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 align-
              ment, 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) set-
              tings.  The String arg uses the same format as  lvm.conf(5),  or
              may use section/field syntax.  See lvm.conf(5) for more informa-
              tion 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) com-
              mand.  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.  out-
              put: record the default command output.  debug: record full com-
              mand 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  lvm-
              lockd(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 limi-
              tations on the ability to use vgsplit later.)
       -q|--quiet ...
              Suppress output and log messages. Overrides --debug  and  --ver-
              bose.   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 con-
              tent.
       Size[UNIT]
              Size is an input number that accepts an  optional  unit.   Input
              units are always treated as base two values, regardless of capi-
              talization, e.g. 'k' and 'K' both refer to  1024.   The  default
              input unit is specified by letter, followed by |UNIT.  UNIT rep-
              resents 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.
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), lvm2-activation-generator(8),
       blkdeactivate(8), lvmdump(8),
       dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8),
       lvmdbusd(8), fsadm(8),
       lvmsystemid(7), lvmreport(7), lvmraid(7), lvmthin(7), lvmcache(7)
Red Hat, Inc.       LVM TOOLS 2.03.14(2)-RHEL8 (2021-10-20)       VGCONVERT(8)