bionic (8) lvscan.8.gz

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

NAME

       lvscan - List all logical volumes in all volume groups

SYNOPSIS

       lvscan option_args
           [ option_args ]
           [ position_args ]

DESCRIPTION

       lvscan scans all VGs or all supported LVM block devices in the system for LVs. The output consists of one
       line for each LV indicating whether or not it is active, a snapshot or origin, the size of the device and
       its allocation policy. Use lvs(8) or lvdisplay(8) to obtain more comprehensive information about LVs.

USAGE

       lvscan
           [ -a|--all ]
           [ COMMON_OPTIONS ]

       lvscan --cache
           [ COMMON_OPTIONS ]
           [ LV ... ]

       Common options for command:
           [ -b|--blockdevice ]
           [    --ignorelockingfailure ]
           [    --readonly ]
           [    --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 ]
           [    --longhelp ]
           [    --profile String ]
           [    --version ]

OPTIONS

       -a|--all
              Show information about internal LVs.  These are components of normal LVs, such as mirrors, which
              are not independently accessible, e.g. not mountable.

       -b|--blockdevice
              No longer used.

       --cache
              Scan the devices used by an LV and send the metadata to lvmetad.

       --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.

       --ignorelockingfailure
              Allows a command to continue with read-only metadata operations after locking failures.

       --longhelp
              Display long help text.

       --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'.

       --readonly
              Run the command in a special read-only mode which will read on-disk metadata without needing to
              take any locks. This can be used to peek inside metadata used by a virtual machine image while the
              virtual machine is running.  It can also be used to peek inside the metadata of clustered VGs when
              clustered locking is not configured or running. No attempt will be made to communicate with the
              device-mapper kernel driver, so this option is unable to report whether or not LVs are actually in
              use.

       --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
              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

       LV
              Logical Volume name.  See lvm(8) for valid names.  An LV positional arg generally includes the  VG
              name and LV name, e.g. VG/LV.

       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.

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)