man > VGCONVERT(8)

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 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 lo‐
              cated.   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 boot‐
              loader 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 infor‐
              mation 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 sep‐
              arated 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)  de‐
              vices/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 de‐
              bugging.

       -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  infor‐
              mation 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  in‐
              clusive - 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 informa‐
              tion.

       --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, stan‐
              dard 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. Use with caution, concurrent commands may produce incorrect results.


       --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  re‐
              port/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 read‐
              ing 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.

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), lvmraid(7), lvmthin(7), lvmcache(7)

Red Hat, Inc.                     LVM TOOLS 2.03.16(2) (2022-05-18)                     VGCONVERT(8)