LVDISPLAY(8)

NAME
lvdisplay — Display information about a logical volume

SYNOPSIS

lvdisplay option_args
    [ 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
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    [ COMMON_OPTIONS ]
    [ VG|LV|Tag ... ]

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Display output in columns like lvs.

lvdisplay
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    [ COMMON_OPTIONS ]
    [ VG|LV|Tag ... ]

—

Generate colon separated output.

lvdisplay
    [ COMMON_OPTIONS ]
    [ VG|LV|Tag ... ]

—

Common options for command:
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Common options for lvm:
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OPTIONS

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).

Generate colon separated output for easier parsing in scripts or programs.
    Also see lvs(8) which provides considerably more control over the output. The values are:
    •   Logical volume name
    •   Volume group name
    •   Logical volume access
    •   Logical volume status
    •   Internal logical volume number
    •   Open count of logical volume
    •   Logical volume size in sectors
    •   Current logical extents associated to logical volume
    •   Allocated logical extents of logical volume
    •   Allocation policy of logical volume
    •   Read ahead sectors of logical volume
    •   Major device number of logical volume
    •   Minor device number of logical volume

Display output in columns.
    The equivalent of lvs(8). Options listed are the same as options given in lvs(8).

The command profile to use for command configuration.
    See lvm.conf(5) for more information about profiles.

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.

See lvmreport(7).

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).

Restricts the devices that are visible and accessible to the command.
    Devices not listed will appear to be missing. This option can be repeated, or accepts a comma separated list of devices. This overrides the devices file.

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) devices/devicesfile and devices/use_devicesfile settings.

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.

Type of headings to use in report output.
    none or 0: No headings. abbrev or 1: Column name abbreviations. full or 2: Full column names.

Display help text.

Include historical LVs in the output.
    (This has no effect unless LVs were removed while lvm.conf(5) metadata/record_lvs_history was enabled.

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

Record information in the systemd journal.
    This information 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. debug: record full command debugging.

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.

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

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.

Do not use the hints file to locate devices for PVs. A command may read
    more devices to find PVs when hints are not used. The command will still perform standard hint file invalidation where appropriate.

Disable locking. Use with caution, concurrent commands may produce
    incorrect results.

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

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(5) report section for more config options. See lvmreport(7) for more information about reporting.

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

Suppress output and log messages. Overrides --debug and --verbose.
    Repeat once to also suppress any prompts with answer 'no'.

Prevent the command from making changes, including activation and
    metadata updates. (See --permission r for read only LVs.)

Overrides current output format for reports which is defined globally by
    the report/output_format setting in lvm.conf(5). 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. json_std produces report output in JSON format which is more compliant with JSON standard. See lvmreport(7) for more information.

Output columns as rows.

Use default columns that emphasize segment information.

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.

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

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.

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 hasn't.

Produce output immediately without sorting or aligning the columns properly.

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.

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

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. 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: 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.

SEE ALSO
lvm(8), lvm.conf(5), lvmconfig(8), lvmdevices(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), vgimportdevices(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), blkdeactivate(8), lvmdump(8),

dmeventd(8), lvmpolld(8), lvmlockd(8), lvmlockctl(8), cmirrord(8), lvmdbusd(8), fsadm(8),

lvmsystemid(7), lvmreport(7), lvmcache(7), lvmraid(7), lvmthin(7), lvmvdo(7), lvmautoactivation(7)