lvs(8) — Linux manual page


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

NAME         top

       lvs - Display information about logical volumes

SYNOPSIS         top

           [ option_args ]
           [ position_args ]

DESCRIPTION         top

       lvs produces formatted output about LVs.

USAGE         top

           [ -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         top

              Use with --separator to align the output columns

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

              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).

       --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.

       --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

       --driverloaded y|n
              If set to no, the command will not attempt to use device-
              mapper.  For testing and debugging.

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

              Display help text.

              Include historical LVs in the output.  (This has no effect
              unless LVs were removed while lvm.conf
              metadata/record_lvs_history was enabled.

              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
              lvmlockd(8) for more information.

              Suppress command report and display only log report.

              Display long help text.

              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).

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

              Disable locking.

              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

       --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'.

              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.

              Output columns as rows.

              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 selectable object fields.  Rows can be
              displayed with an additional "selected" field (-o selected)
              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

              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.

              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

              Produce output immediately without sorting or aligning the
              columns 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.

              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
              detail of messages sent to stdout and stderr.

              Display version information.

              Do not prompt for confirmation interactively but always assume
              the answer yes. Use with extreme caution.  (For automatic no,
              see -qq.)

VARIABLES         top

              Volume Group name.  See lvm(8) for valid names.

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

              See the option description for information about the string

              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.)


       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         top

       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,
          invalid (S)uspended snapshot, snapshot (m)erge failed, suspended
          snapshot (M)erge failed, mapped (d)evice present without tables,
          mapped device present with (i)nactive table, thin-pool (c)heck
          needed, suspended 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 equivalents using the md raid kernel driver all appear as
          (r).  Snapshots using the original device-mapper driver appear as
          (s); whereas snapshots 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
          signifies the status is unknown.

          Related to RAID Logical Volumes: (r)efresh needed, (m)ismatches
          exist, (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 signifies 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 algorithm change.
          (R)emove after reshape signifies freed striped raid images to be

          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
          signifies that thin pool encounters certain types of failures but
          it's still possible to do reads at least, but no metadata changes
          are allowed.

          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.

          Related to writecache logical volumes: (E)rror.
          (E)rror is set dm-writecache reports an error.

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

SEE ALSO         top

       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) lvmpolld(8) lvmlockd(8) lvmlockctl(8) cmirrord(8)

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

COLOPHON         top

       This page is part of the lvm2 (Logical Volume Manager 2) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this
       manual page, see ⟨⟩.  This page
       was obtained from the tarball fetched from
       ⟨⟩ on 2020-08-13.  If you
       discover any rendering problems in this HTML version of the page, or
       you believe there is a better or more up-to-date source for the page,
       or you have corrections or improvements to the information in this
       COLOPHON (which is not part of the original manual page), send a mail

Red Hat, Inc.         LVM TOOLS 2.03.10(2) (2020-08-09)               LVS(8)

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