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 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 ]
           [    --driverloaded y|n ]
           [    --lockopt String ]
           [    --longhelp ]
           [    --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 set-
              tings.  The String arg uses the same format as lvm.conf, 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).

       --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.

       --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 LA-
              BEL_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.

       --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.  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 un-
              usual 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 de-
              tail 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:  bBsSkKmMgGtTpPeE.   b|B  is
              bytes,  s|S  is  sectors  of 512 bytes, k|K is kilobytes, m|M is
              megabytes, g|G is gigabytes, t|T is terabytes, p|P is petabytes,
              e|E  is  exabytes.  (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)

       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) vgcon-
       vert(8)  vgdisplay(8)  vgexport(8)  vgextend(8)  vgimport(8)  vgimport-
       clone(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)  lvre-
       duce(8) lvremove(8) lvrename(8) lvresize(8) lvs(8) lvscan(8)

       lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeacti-
       vate(8) lvmdump(8)

       dmeventd(8) lvmpolld(8)  lvmlockd(8)  lvmlockctl(8)  cmirrord(8)  lvmd-
       busd(8)

       lvmsystemid(7) lvmreport(7) lvmraid(7) lvmthin(7) lvmcache(7)

Red Hat, Inc.          LVM TOOLS 2.03.07(2) (2019-11-30)          VGCONVERT(8)

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