bionic (8) vgcfgrestore.8.gz

Provided by: lvm2_2.02.176-4.1ubuntu3.18.04.3_amd64 bug

NAME

       vgcfgrestore - Restore volume group configuration

SYNOPSIS

       vgcfgrestore option_args position_args
           [ option_args ]
           [ position_args ]

           --commandprofile String
           --config String
        -d|--debug
           --driverloaded y|n
        -f|--file String
           --force
        -h|--help
        -l|--list
           --longhelp
        -M|--metadatatype lvm2|lvm1
           --profile String
        -q|--quiet
        -t|--test
        -v|--verbose
           --version
        -y|--yes

DESCRIPTION

       vgcfgrestore  restores the metadata of a VG from a text back up file produced by vgcfgbackup. This writes
       VG metadata onto the devices specifed in back up file.

       A back up file can be specified with --file.  If no backup file is specified,  the  most  recent  one  is
       used. Use --list for a list of the available back up and archive files of a VG.

       WARNING:  When  a  VG contains thin pools, changes to thin metadata cannot be reverted, and data loss may
       occur if thin metadata has changed. The force option is required to restore in this case.

USAGE

       Restore VG metadata from last backup.

       vgcfgrestore VG
           [ COMMON_OPTIONS ]
       -

       Restore VG metadata from specified file.

       vgcfgrestore -f|--file String VG
           [ COMMON_OPTIONS ]
       -

       List all VG metadata backups.

       vgcfgrestore -l|--list VG
           [ COMMON_OPTIONS ]
       -

       List one VG metadata backup file.

       vgcfgrestore -l|--list -f|--file String
           [ COMMON_OPTIONS ]
           [ VG ]
       -

       Common options for command:
           [ -M|--metadatatype lvm2|lvm1 ]
           [    --force ]

       Common options for lvm:
           [ -d|--debug ]
           [ -h|--help ]
           [ -q|--quiet ]
           [ -t|--test ]
           [ -v|--verbose ]
           [ -y|--yes ]
           [    --commandprofile String ]
           [    --config String ]
           [    --driverloaded y|n ]
           [    --longhelp ]
           [    --profile String ]
           [    --version ]

OPTIONS

       --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 settings.  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|--file String
              Read metadata backup from the named file.  Usually this file was created by vgcfgbackup.

       --force ...
              Force metadata restore even with thin pool LVs.  Use with extreme caution. Most changes to thin
              metadata cannot be reverted.  You may lose data if you restore metadata that does not match the
              thin pool kernel metadata precisely.

       -h|--help
              Display help text.

       -l|--list
              List metadata backup and archive files pertaining to the VG.  May be used with --file. Does not
              restore the VG.

       --longhelp
              Display long help text.

       -M|--metadatatype lvm2|lvm1
              Specifies the type of on-disk metadata to use.  lvm2 (or just 2) is the current, standard format.
              lvm1 (or just 1) is a historical format that can be used for accessing old data.

       --profile String
              An alias for --commandprofile or --metadataprofile, depending on the command.

       -q|--quiet ...
              Suppress output and log messages. Overrides --debug and --verbose.  Repeat once to also suppress
              any prompts with answer 'no'.

       -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:
              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.

NOTES

       To replace PVs, vgdisplay --partial --verbose will show the UUIDs and sizes of any PVs that are no longer
       present.  If  a  PV  in  the VG is lost and you wish to substitute another of the same size, use pvcreate
       --restorefile filename --uuid uuid (plus additional arguments as appropriate) to initialise it  with  the
       same  UUID  as  the missing PV. Repeat for all other missing PVs in the VG.  Then use vgcfgrestore --file
       filename to restore the VG's metadata.

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)  vgconvert(8)  vgdisplay(8)  vgexport(8)
       vgextend(8)  vgimport(8)  vgimportclone(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) lvmetad(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) clvmd(8) cmirrord(8) lvmdbusd(8)

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