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LVDISPLAY(8)							  LVDISPLAY(8)

NAME
       lvdisplay - Display information about a logical volume

SYNOPSIS
       lvdisplay
	   [ option_args ]
	   [ position_args ]

DESCRIPTION
       lvdisplay  shows	 the  attributes of LVs, like size, read/write status,
       snapshot information, etc.

       lvs(8) is a preferred alternative that shows the same  information  and
       more, using a more compact and configurable output format.

USAGE
       lvdisplay
	   [ -a|--all ]
	   [ -c|--colon ]
	   [ -C|--columns ]
	   [ -H|--history ]
	   [ -m|--maps ]
	   [ -o|--options String ]
	   [ -O|--sort String ]
	   [ -S|--select String ]
	   [	--aligned ]
	   [	--binary ]
	   [	--configreport log|vg|lv|pv|pvseg|seg ]
	   [	--foreign ]
	   [	--ignorelockingfailure ]
	   [	--ignoreskippedcluster ]
	   [	--logonly ]
	   [	--noheadings ]
	   [	--nosuffix ]
	   [	--readonly ]
	   [	--reportformat basic|json ]
	   [	--segments ]
	   [	--separator String ]
	   [	--shared ]
	   [	--unbuffered ]
	   [	--units r|R|h|H|b|B|s|S|k|K|m|M|g|G|t|T|p|P|e|E ]
	   [ COMMON_OPTIONS ]
	   [ VG|LV|Tag ... ]

       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
       --aligned
	      Use with --separator to align the output columns

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

       --binary
	      Use binary values "0" or "1" instead of descriptive literal val‐
	      ues for columns that have exactly two valid values to report
	      (not counting the "unknown" value which denotes that the value
	      could not be determined).

       -c|--colon
	      Generate colon separated output for easier parsing in scripts or
	      programs.	 Also see vgs(8) which provides considerably more con‐
	      trol over the output.

       -C|--columns
	      Display output in columns, the equivalent of vgs(8).  Options
	      listed are the same as options given in vgs(8).

       --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.

       --configreport log|vg|lv|pv|pvseg|seg
	      See lvmreport(7).

       -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.

       --foreign
	      Report/display foreign VGs that would otherwise be skipped.  See
	      lvmsystemid(7) for more information about foreign VGs.

       -h|--help
	      Display help text.

       -H|--history
	      Include historical LVs in the output.  (This has no effect
	      unless LVs were removed while lvm.conf metadata/record_lvs_his‐
	      tory was enabled.

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

       --ignoreskippedcluster
	      Use to avoid exiting with an non-zero status code if the command
	      is run without clustered locking and clustered VGs are skipped.

       --logonly
	      Suppress command report and display only log report.

       --longhelp
	      Display long help text.

       -m|--maps
	      Display the mapping of logical extents to PVs and physical
	      extents.	To map physical extents to logical extents use: pvs
	      --segments -o+lv_name,seg_start_pe,segtype

       --noheadings
	      Suppress the headings line that is normally the first line of
	      output.  Useful if grepping the output.

       --nosuffix
	      Suppress the suffix on output sizes. Use with --units (except h
	      and H) if processing the output.

       -o|--options String
	      Comma-separated, ordered list of fields to display in columns.
	      String arg syntax is: [+|-|#]Field1[,Field2 ...]	The prefix +
	      will append the specified fields to the default fields, - will
	      remove the specified fields from the default fields, and # will
	      compact specified fields (removing them when empty for all
	      rows.)  Use -o help to view the list of all available fields.
	      Use separate lists of fields to add, remove or compact by
	      repeating the -o option: -o+field1,field2 -o-field3,field4
	      -o#field5.  These lists are evaluated from left to right.	 Use
	      field name lv_all to view all LV fields, vg_all all VG fields,
	      pv_all all PV fields, pvseg_all all PV segment fields, seg_all
	      all LV segment fields, and pvseg_all all PV segment columns.
	      See the lvm.conf report section for more config options.	See
	      lvmreport(7) for more information about reporting.

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

       -q|--quiet ...
	      Suppress output and log messages. Overrides --debug and --ver‐
	      bose.  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 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 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.

       --segments

       -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 addi‐
	      tional "selected" field (-o selected) showing 1 if the row
	      matches the selection and 0 otherwise.  For non-reporting com‐
	      mands which process LVM entities, the selection is used to
	      choose items to process.

       --separator String
	      String to use to separate each column. Useful if grepping the
	      output.

       --shared
	      Report/display shared VGs that would otherwise be skipped when
	      lvmlockd is not being used on the host.  See lvmlockd(8) for
	      more information about shared VGs.

       -O|--sort String
	      Comma-separated ordered list of columns to sort by. Replaces the
	      default selection. Precede any column with - for a reverse sort
	      on that column.

       -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.

       --unbuffered
	      Produce output immediately without sorting or aligning the col‐
	      umns properly.

       --units r|R|h|H|b|B|s|S|k|K|m|M|g|G|t|T|p|P|e|E
	      All sizes are output in these units: human-(r)eadable with '<'
	      rounding indicator, (h)uman-readable, (b)ytes, (s)ectors,
	      (k)ilobytes, (m)egabytes, (g)igabytes, (t)erabytes, (p)etabytes,
	      (e)xabytes.  Capitalise to use multiples of 1000 (S.I.) instead
	      of 1024.	Custom units can be specified, e.g. --units 3M.

       -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.

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

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

       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) lvmetad(8) lvmpolld(8) lvmlockd(8)  lvmlockctl(8)  clvmd(8)
       cmirrord(8) lvmdbusd(8)

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

Red Hat, Inc.	      LVM TOOLS 2.02.176(2) (2017-11-03)	  LVDISPLAY(8)
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