lvs(8)



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

NAME
       lvs - Display information about logical volumes

SYNOPSIS
       lvs
           [ option_args ]
           [ position_args ]

DESCRIPTION
       lvs produces formatted output about LVs.

USAGE
       lvs
           [ -H|--history ]
           [ -a|--all ]
           [ -o|--options String ]
           [ -S|--select String ]
           [ -O|--sort String ]
           [    --segments ]
           [    --aligned ]
           [    --binary ]
           [    --configreport log|vg|lv|pv|pvseg|seg ]
           [    --foreign ]
           [    --ignorelockingfailure ]
           [    --logonly ]
           [    --nameprefixes ]
           [    --noheadings ]
           [    --nosuffix ]
           [    --readonly ]
           [    --reportformat basic|json ]
           [    --rows ]
           [    --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 ]
           [    --unquoted ]
           [ 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 ]
           [    --lockopt String ]
           [    --longhelp ]
           [    --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 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).

       --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 un-
              less LVs were removed while lvm.conf metadata/record_lvs_history
              was enabled.

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

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

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

       --longhelp
              Display long help text.

       --nameprefixes
              Add an "LVM2_" prefix plus the field name to the output. Useful
              with --noheadings to produce a list of field=value pairs that
              can be used to set environment variables (for example, in udev
              rules).

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

       --nolocking
              Disable locking.

       --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 re-
              peating 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. 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.

       --rows
              Output columns as rows.

       --segments
              Use default columns that emphasize segment 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 se-
              lectable 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 un-
              usual 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.

       --unquoted
              When used with --nameprefixes, output values in the field=value
              pairs are not quoted.

       -v|--verbose ...
              Set verbose level. Repeat from 1 to 4 times to increase the de-
              tail 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.

NOTES
       The lv_attr bits are:

       1  Volume type: (C)ache, (m)irrored, (M)irrored without  initial  sync,
          (o)rigin,  (O)rigin  with  merging  snapshot, (r)aid, (R)aid without
          initial sync, (s)napshot, merging (S)napshot,  (p)vmove,  (v)irtual,
          mirror  or  raid (i)mage, mirror or raid (I)mage out-of-sync, mirror
          (l)og device, under (c)onversion, thin (V)olume, (t)hin pool, (T)hin
          pool  data,  v(d)o pool, v(D)o pool data, raid or pool m(e)tadata or
          pool metadata spare.

       2  Permissions: (w)riteable,  (r)ead-only,  (R)ead-only  activation  of
          non-read-only volume

       3  Allocation  policy:  (a)nywhere, (c)ontiguous, (i)nherited, c(l)ing,
          (n)ormal This is capitalised  if  the  volume  is  currently  locked
          against allocation changes, for example during pvmove(8).

       4  fixed (m)inor

       5  State:  (a)ctive, (h)istorical, (s)uspended, (I)nvalid snapshot, in-
          valid (S)uspended snapshot, snapshot (m)erge failed, suspended snap-
          shot  (M)erge failed, mapped (d)evice present without tables, mapped
          device present with (i)nactive table, thin-pool (c)heck needed, sus-
          pended thin-pool (C)heck needed, (X) unknown

       6  device (o)pen, (X) unknown

       7  Target   type:   (C)ache,   (m)irror,  (r)aid,  (s)napshot,  (t)hin,
          (u)nknown, (v)irtual.  This groups logical volumes  related  to  the
          same kernel target together.  So, for example, mirror images, mirror
          logs as well as mirrors themselves appear as (m)  if  they  use  the
          original device-mapper mirror kernel driver; whereas the raid equiv-
          alents using the md raid kernel driver all appear as (r).  Snapshots
          using the original device-mapper driver appear as (s); whereas snap-
          shots of thin volumes using the new thin provisioning driver  appear
          as (t).

       8  Newly-allocated  data blocks are overwritten with blocks of (z)eroes
          before use.

       9  Volume Health, where there are currently three groups of  attributes
          identified:

          Common ones for all Logical Volumes: (p)artial, (X) unknown.
          (p)artial  signifies  that  one or more of the Physical Volumes this
          Logical Volume uses is missing from the system. (X)  unknown  signi-
          fies the status is unknown.

          Related  to RAID Logical Volumes: (r)efresh needed, (m)ismatches ex-
          ist, (w)ritemostly.
          (r)efresh signifies that one or more of the  Physical  Volumes  this
          RAID Logical Volume uses had suffered a write error. The write error
          could be due to a temporary failure of that Physical  Volume  or  an
          indication  that  it  is failing.  The device should be refreshed or
          replaced. (m)ismatches signifies that the RAID  logical  volume  has
          portions  of  the  array that are not coherent.  Inconsistencies are
          detected by initiating a "check" on a  RAID  logical  volume.   (The
          scrubbing  operations,  "check"  and "repair", can be performed on a
          RAID logical volume via the 'lvchange' command.)  (w)ritemostly sig-
          nifies  the devices in a RAID 1 logical volume that have been marked
          write-mostly.  Re(s)haping signifies a RAID Logical Volume is either
          undergoing  a  stripe  addition/removal, a stripe size or RAID algo-
          rithm change.  (R)emove after reshape signifies freed  striped  raid
          images to be removed.

          Related to Thin pool Logical Volumes: (F)ailed, out of (D)ata space,
          (M)etadata read only.
          (F)ailed is set if thin pool encounters serious failures  and  hence
          no  further  I/O is permitted at all. The out of (D)ata space is set
          if thin pool has run out of data space. (M)etadata read only  signi-
          fies  that  thin  pool encounters certain types of failures but it's
          still possible to do reads at least, but no metadata changes are al-
          lowed.

          Related to Thin Logical Volumes: (F)ailed.
          (F)ailed  is  set  when related thin pool enters Failed state and no
          further I/O is permitted at all.

       10 s(k)ip activation: this volume is flagged to be skipped during acti-
          vation.

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)  lvmpolld(8)  lvmlockd(8)  lvmlockctl(8)  cmirrord(8) lvmd-
       busd(8)

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

Red Hat, Inc.          LVM TOOLS 2.03.07(2) (2019-11-30)                LVS(8)

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