lvs(8) - Display information about logical volumes
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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 ] [ --ignoreskippedcluster ] [ --logonly ] [ --nameprefixes ] [ --noheadings ] [ --nolocking ] [ --nosuffix ] [ --readonly ] [ --reportformat basic|json ] [ --rows ] [ --separator String ] [ --shared ] [ --trustcache ] [ --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 ] [ --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 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. --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 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. --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 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. --trustcache Avoids certain device scanning during command processing. Do not use. --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 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. 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, 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 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 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 sig‐ nifies the devices in a RAID 1 logical volume that have been marked write-mostly. (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 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. 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) 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 2.02.180(2)-RHEL7 (2018-07-20) LVS(8)
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