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283 lines
6.7 KiB
Plaintext
283 lines
6.7 KiB
Plaintext
.TH LVSCAN 8 "LVM TOOLS #VERSION#" "Red Hat, Inc."
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.
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.SH NAME
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.
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lvscan \(em List all logical volumes in all volume groups
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.
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.SH SYNOPSIS
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.
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\fBlvscan\fP
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.br
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[ \fIoption_args\fP ]
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.br
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.
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.SH DESCRIPTION
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.
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lvscan scans all VGs or all supported LVM block devices in the system for
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LVs. The output consists of one line for each LV indicating whether or not
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it is active, a snapshot or origin, the size of the device and its
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allocation policy. Use \fBlvs\fP(8) or \fBlvdisplay\fP(8) to obtain more
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comprehensive information about LVs.
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.
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.SH USAGE
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.
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\fBlvscan\fP
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.br
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.RS 4
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.ad l
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[ \fB-a\fP|\fB--all\fP ]
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.br
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[ \fB-b\fP|\fB--blockdevice\fP ]
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.br
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[ \fB--ignorelockingfailure\fP ]
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.br
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[ \fB--readonly\fP ]
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.br
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[ \fB--reportformat\fP \fBbasic\fP|\fBjson\fP|\fBjson_std\fP ]
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.br
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[ COMMON_OPTIONS ]
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.ad b
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.RE
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.P
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Common options for lvm:
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.
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.RS 4
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.ad l
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[ \fB-d\fP|\fB--debug\fP ]
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.br
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[ \fB-h\fP|\fB--help\fP ]
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.br
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[ \fB-q\fP|\fB--quiet\fP ]
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.br
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[ \fB-t\fP|\fB--test\fP ]
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.br
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[ \fB-v\fP|\fB--verbose\fP ]
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.br
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[ \fB-y\fP|\fB--yes\fP ]
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.br
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[ \fB--commandprofile\fP \fIString\fP ]
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.br
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[ \fB--config\fP \fIString\fP ]
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.br
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[ \fB--devices\fP \fIPV\fP ]
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.br
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[ \fB--devicesfile\fP \fIString\fP ]
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.br
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[ \fB--driverloaded\fP \fBy\fP|\fBn\fP ]
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.br
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[ \fB--journal\fP \fIString\fP ]
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.br
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[ \fB--lockopt\fP \fIString\fP ]
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.br
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[ \fB--longhelp\fP ]
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.br
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[ \fB--nohints\fP ]
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.br
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[ \fB--nolocking\fP ]
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.br
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[ \fB--profile\fP \fIString\fP ]
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.br
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[ \fB--version\fP ]
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.ad b
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.RE
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.
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.SH OPTIONS
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.HP
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\fB-a\fP|\fB--all\fP
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.br
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Show information about internal LVs.
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These are components of normal LVs, such as mirrors,
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which are not independently accessible, e.g. not mountable.
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.
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.HP
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\fB-b\fP|\fB--blockdevice\fP
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.br
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No longer used.
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.
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.HP
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\fB--commandprofile\fP \fIString\fP
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.br
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The command profile to use for command configuration.
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See \fBlvm.conf\fP(5) for more information about profiles.
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.
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.HP
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\fB--config\fP \fIString\fP
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.br
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Config settings for the command. These override \fBlvm.conf\fP(5) settings.
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The String arg uses the same format as \fBlvm.conf\fP(5),
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or may use section/field syntax.
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See \fBlvm.conf\fP(5) for more information about config.
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.
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.HP
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\fB-d\fP|\fB--debug\fP ...
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.br
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Set debug level. Repeat from 1 to 6 times to increase the detail of
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messages sent to the log file and/or syslog (if configured).
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.
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.HP
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\fB--devices\fP \fIPV\fP
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.br
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Restricts the devices that are visible and accessible to the command.
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Devices not listed will appear to be missing. This option can be
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repeated, or accepts a comma separated list of devices. This overrides
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the devices file.
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.
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.HP
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\fB--devicesfile\fP \fIString\fP
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.br
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A file listing devices that LVM should use.
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The file must exist in \fI#DEFAULT_SYS_DIR#/devices/\fP and is managed
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with the \fBlvmdevices\fP(8) command.
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This overrides the \fBlvm.conf\fP(5) \fBdevices/devicesfile\fP and
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\fBdevices/use_devicesfile\fP settings.
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.
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.HP
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\fB--driverloaded\fP \fBy\fP|\fBn\fP
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.br
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If set to no, the command will not attempt to use device-mapper.
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For testing and debugging.
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.
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.HP
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\fB-h\fP|\fB--help\fP
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.br
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Display help text.
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.
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.HP
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\fB--ignorelockingfailure\fP
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.br
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Allows a command to continue with read-only metadata
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operations after locking failures.
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.
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.HP
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\fB--journal\fP \fIString\fP
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.br
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Record information in the systemd journal.
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This information is in addition to information
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enabled by the lvm.conf log/journal setting.
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command: record information about the command.
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output: record the default command output.
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debug: record full command debugging.
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.
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.HP
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\fB--lockopt\fP \fIString\fP
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.br
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Used to pass options for special cases to lvmlockd.
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See \fBlvmlockd\fP(8) for more information.
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.
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.HP
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\fB--longhelp\fP
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.br
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Display long help text.
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.
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.HP
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\fB--nohints\fP
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.br
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Do not use the hints file to locate devices for PVs. A command may read
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more devices to find PVs when hints are not used. The command will still
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perform standard hint file invalidation where appropriate.
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.
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.HP
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\fB--nolocking\fP
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.br
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Disable locking. Use with caution, concurrent commands may produce
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incorrect results.
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.
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.HP
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\fB--profile\fP \fIString\fP
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.br
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An alias for --commandprofile or --metadataprofile, depending
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on the command.
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.
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.HP
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\fB-q\fP|\fB--quiet\fP ...
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.br
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Suppress output and log messages. Overrides --debug and --verbose.
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Repeat once to also suppress any prompts with answer 'no'.
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.
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.HP
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\fB--readonly\fP
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.br
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Run the command in a special read-only mode which will read on-disk
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metadata without needing to take any locks. This can be used to peek
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inside metadata used by a virtual machine image while the virtual
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machine is running. No attempt will be made to communicate with the
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device-mapper kernel driver, so this option is unable to report whether
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or not LVs are actually in use.
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.
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.HP
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\fB--reportformat\fP \fBbasic\fP|\fBjson\fP|\fBjson_std\fP
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.br
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Overrides current output format for reports which is defined globally by
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the report/output_format setting in \fBlvm.conf\fP(5).
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\fBbasic\fP is the original format with columns and rows.
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If there is more than one report per command, each report is prefixed
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with the report name for identification. \fBjson\fP produces report
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output in JSON format. \fBjson_std\fP produces report output in
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JSON format which is more compliant with JSON standard.
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See \fBlvmreport\fP(7) for more information.
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.
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.HP
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\fB-t\fP|\fB--test\fP
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.br
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Run in test mode. Commands will not update metadata.
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This is implemented by disabling all metadata writing but nevertheless
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returning success to the calling function. This may lead to unusual
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error messages in multi-stage operations if a tool relies on reading
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back metadata it believes has changed but hasn't.
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.
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.HP
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\fB-v\fP|\fB--verbose\fP ...
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.br
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Set verbose level. Repeat from 1 to 4 times to increase the detail
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of messages sent to stdout and stderr.
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.
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.HP
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\fB--version\fP
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.br
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Display version information.
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.
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.HP
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\fB-y\fP|\fB--yes\fP
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.br
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Do not prompt for confirmation interactively but always assume the
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answer yes. Use with extreme caution.
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(For automatic no, see -qq.)
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.
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.SH VARIABLES
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.
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.TP
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.I String
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See the option description for information about the string content.
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.TP
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.IR Size [UNIT]
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Size is an input number that accepts an optional unit.
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Input units are always treated as base two values, regardless of
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capitalization, e.g. 'k' and 'K' both refer to 1024.
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The default input unit is specified by letter, followed by |UNIT.
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UNIT represents other possible input units:
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.BR b | B
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is bytes,
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.BR s | S
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is sectors of 512 bytes,
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.BR k | K
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is KiB,
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.BR m | M
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is MiB,
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.BR g | G
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is GiB,
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.BR t | T
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is TiB,
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.BR p | P
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is PiB,
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.BR e | E
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is EiB.
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(This should not be confused with the output control --units, where
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capital letters mean multiple of 1000.)
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.SH ENVIRONMENT VARIABLES
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.
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See \fBlvm\fP(8) for information about environment variables used by lvm.
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For example, LVM_VG_NAME can generally be substituted for a required VG parameter.
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