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LVSCAN(8)                              System Manager's Manual                             LVSCAN(8)



NAME
       lvscan - List all logical volumes in all volume groups

SYNOPSIS
       lvscan
           [ option_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  ori‐
       gin,  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 ]
           [ -b|--blockdevice ]
           [    --ignorelockingfailure ]
           [    --readonly ]
           [    --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
       -a|--all
              Show information about internal LVs.  These are components of normal LVs, such as mir‐
              rors, which are not independently accessible, e.g. not mountable.

       -b|--blockdevice
              No longer used.

       --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 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 de‐
              bugging.

       -h|--help
              Display help text.

       --ignorelockingfailure
              Allows a command to continue with read-only metadata operations after locking fail‐
              ures.

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

       --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'.

       --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. No attempt will be made to commu‐
              nicate 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 re‐
              port/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 lvmre‐‐
              port(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
       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 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)

       pvchange(8)  pvck(8)  pvcreate(8)  pvdisplay(8) pvmove(8) pvremove(8) pvresize(8) pvs(8) pvs‐‐
       can(8)

       vgcfgbackup(8) vgcfgrestore(8) vgchange(8) vgck(8) vgcreate(8) vgconvert(8) vgdisplay(8)  vg‐‐
       export(8)  vgextend(8) vgimport(8) vgimportclone(8) vgmerge(8) vgmknodes(8) vgreduce(8) vgre‐‐
       move(8) vgrename(8) vgs(8) vgscan(8) vgsplit(8)

       lvcreate(8) lvchange(8) lvconvert(8) lvdisplay(8) lvextend(8) lvreduce(8)  lvremove(8)  lvre‐‐
       name(8) lvresize(8) lvs(8) lvscan(8)

       lvm-fullreport(8) lvm-lvpoll(8) lvm2-activation-generator(8) blkdeactivate(8) lvmdump(8)

       dmeventd(8) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8) lvmdbusd(8)

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



Red Hat, Inc.                     LVM TOOLS 2.03.11(2) (2021-01-08)                        LVSCAN(8)