Ubuntu Manpage: vgexport - Unregister volume group(s) from the system

Provided by: lvm2_2.03.07-1ubuntu1_amd64

NAME

       vgexport - Unregister volume group(s) from the system

SYNOPSIS

       vgexport option_args position_args
           [ option_args ]

DESCRIPTION

       vgexport changes a VG into the exported state, which ensures that the VG and its disks are
       not being used, and cannot be used until the VG is imported by vgimport(8).  Putting a  VG
       into  an  unusable, offline state can be useful when doing things like moving a VG's disks
       to  another  system.   Exporting  a  VG  provides  some  protection  from  its  LVs  being
       accidentally used, or being used by an automated system before it's ready.

       A VG cannot be exported until all of its LVs are inactive.

       LVM commands will ignore an exported VG or report an error if a command tries to use it.

       For  an  exported  VG,  the  vgs  command will display attribute, and the pvs command will
       display attribute.  Both vgs and pvs will display report field.

       vgexport clears the VG system ID, and vgimport sets the VG system ID  to  match  the  host
       running vgimport (if the host has a system ID).

USAGE

       Export specified VGs.

       vgexport VG|Tag|Select ...
           [ -S|--select String ]
           [ COMMON_OPTIONS ]

       Export all VGs.

       vgexport -a|--all
           [ COMMON_OPTIONS ]

       Common options for command:
           [    --reportformat basic|json ]

       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

-a|--all

--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.

-h|--help
Display help text.

--lockopt String
Used to pass options for special cases to lvmlockd. See lvmlockd(8) for more
information.

--longhelp
Display long help text.

--nolocking
Disable locking.

--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'.

--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.

-S|--select String
Select objects for processing and reporting based on specified criteria. The
criteria syntax is described by --select help and lvmreport(7). For reporting
commands, one row is displayed for each object matching the criteria. See
--options help for selectable object fields. Rows can be displayed with an
additional "selected" field (-o selected) showing 1 if the row matches the
selection and 0 otherwise. For non-reporting commands which process LVM entities,
the selection is used to choose items to process.

-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.

       Tag
              Tag  name.  See lvm(8) for information about tag names and using tags in place of a
              VG, LV or PV.

       Select
              Select indicates that a  required  positional  parameter  can  be  omitted  if  the
              --select option is used.  No arg appears in this position.

       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.