# lvdisplay

## 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**]
               [    **--logonly**]
               [    **--noheadings**]
               [    **--nosuffix**]
               [    **--readonly**]
               [    **--segments**]
               [    **--separator** _String_ ]
               [    **--shared**]
               [    **--unbuffered**]
               [    **--units**[_Number_]**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_ ]
               [    **--devices** _PV_ ]
               [    **--devicesfile** _String_ ]
               [    **--driverloaded y** |**n**]
               [    **--journal** _String_ ]
               [    **--lockopt** _String_ ]
               [    **--longhelp**]
               [    **--nohints**]
               [    **--nolocking**]
               [    **--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
                  accessible, e.g. not mountable.
    
           **--binary**
                  Use binary values "0" or "1" instead of descriptive literal
                  values 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  con‐
                  siderably more control over the output.
    
           **-C** |**--columns**
                  Display  output  in columns, the equivalent of vgs(8).  Op‐
                  tions 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(5)
                  settings.    The   String  arg  uses  the  same  format  as
                  lvm.conf(5),  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).
    
           **--devices** _PV_
                  Devices  that  the  command can use. This option can be re‐
                  peated or accepts a comma separated list of  devices.  This
                  overrides the devices file.
    
           **--devicesfile** _String_
                  A  file listing devices that LVM should use.  The file must
                  exist  in  _/etc/lvm/devices/_  and  is  managed   with   the
                  lvmdevices(8)  command.  This overrides the lvm.conf(5) **de‐**
                  **vices/devicesfile** and **devices/use_devicesfile** settings.
    
           **--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(5)  **metada‐**
                  **ta/record_lvs_history** was enabled.
    
           **--ignorelockingfailure**
                  Allows a command to continue with read-only metadata opera‐
                  tions after locking failures.
    
           **--journal** _String_
                  Record information in the systemd journal.   This  informa‐
                  tion  is in addition to information enabled by the lvm.conf
                  log/journal setting.  command: record information about the
                  command.  output: record the default command  output.   de‐
                  bug: record full command debugging.
    
           **--lockopt** _String_
                  Used  to  pass  options for special cases to lvmlockd.  See
                  lvmlockd(8) for more information.
    
           **--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.
    
           **--nohints**
                  Do not use the hints file to locate devices for PVs. A com‐
                  mand  may  read more devices to find PVs when hints are not
                  used. The command will still perform standard hint file in‐
                  validation where appropriate.
    
           **--nolocking**
                  Disable locking.
    
           **--nosuffix**
                  Suppress the suffix on output sizes. Use with --units  (ex‐
                  cept 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 de‐
                  fault fields, **-** will remove the specified fields  from  the
                  default fields, and **#** will compact specified fields (remov‐
                  ing 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(5) report section  for  more  config  options.
                  See lvmreport(7) for more information about reporting.
    
           **--profile** _String_
                  An alias for --commandprofile or --metadataprofile, depend‐
                  ing 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  ma‐
                  chine  image  while  the virtual machine is running. No at‐
                  tempt 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.
    
           **--segments**
    
           **-S** |**--select** _String_
                  Select objects for processing and reporting based on speci‐
                  fied criteria.  The criteria syntax is described  by  **--se‐**
                  **lect  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  se‐
                  lected)  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.
    
           **--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.  Re‐
                  places 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 never‐
                  theless 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
                  columns properly.
    
           **--units**[_Number_]**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)ec‐
                  tors, (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  speci‐
                  fied, 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 as‐
                  sume  the answer yes. Use with extreme caution.  (For auto‐
                  matic 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
                  positional 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
                  content.
    
           _Size_[UNIT]
                  Size is an input number that accepts an optional unit.  In‐
                  put 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: **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.
    


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