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567 lines
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567 lines
12 KiB
Plaintext
.TH LVDISPLAY 8 "LVM TOOLS #VERSION#" "Red Hat, Inc."
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.SH NAME
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lvdisplay - Display information about a logical volume
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.
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.SH SYNOPSIS
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\fBlvdisplay\fP
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.br
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[ \fIoption_args\fP ]
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.br
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[ \fIposition_args\fP ]
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.br
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.SH DESCRIPTION
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lvdisplay shows the attributes of LVs, like size, read/write status,
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snapshot information, etc.
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\fBlvs\fP(8) is a preferred alternative that shows the same information
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and more, using a more compact and configurable output format.
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.SH USAGE
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\fBlvdisplay\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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.ad b
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.br
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.ad l
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[ \fB-c\fP|\fB--colon\fP ]
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.ad b
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.br
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.ad l
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[ \fB-C\fP|\fB--columns\fP ]
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.ad b
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.br
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.ad l
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[ \fB-H\fP|\fB--history\fP ]
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.ad b
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.br
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.ad l
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[ \fB-m\fP|\fB--maps\fP ]
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.ad b
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.br
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.ad l
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[ \fB-o\fP|\fB--options\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB-O\fP|\fB--sort\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB-S\fP|\fB--select\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--aligned\fP ]
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.ad b
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.br
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.ad l
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[ \fB--binary\fP ]
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.ad b
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.br
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.ad l
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[ \fB--configreport\fP \fBlog\fP|\fBvg\fP|\fBlv\fP|\fBpv\fP|\fBpvseg\fP|\fBseg\fP ]
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.ad b
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.br
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.ad l
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[ \fB--foreign\fP ]
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.ad b
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.br
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.ad l
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[ \fB--ignorelockingfailure\fP ]
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.ad b
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.br
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.ad l
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[ \fB--ignoreskippedcluster\fP ]
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.ad b
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.br
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.ad l
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[ \fB--logonly\fP ]
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.ad b
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.br
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.ad l
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[ \fB--noheadings\fP ]
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.ad b
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.br
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.ad l
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[ \fB--nosuffix\fP ]
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.ad b
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.br
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.ad l
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[ \fB--readonly\fP ]
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.ad b
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.br
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.ad l
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[ \fB--reportformat\fP \fBbasic\fP|\fBjson\fP ]
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.ad b
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.br
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.ad l
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[ \fB--segments\fP ]
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.ad b
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.br
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.ad l
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[ \fB--separator\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--shared\fP ]
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.ad b
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.br
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.ad l
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[ \fB--unbuffered\fP ]
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.ad b
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.br
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.ad l
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[ \fB--units\fP \fBr\fP|\fBR\fP|\fBh\fP|\fBH\fP|\fBb\fP|\fBB\fP|\fBs\fP|\fBS\fP|\fBk\fP|\fBK\fP|\fBm\fP|\fBM\fP|\fBg\fP|\fBG\fP|\fBt\fP|\fBT\fP|\fBp\fP|\fBP\fP|\fBe\fP|\fBE\fP ]
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.ad b
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.br
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[ COMMON_OPTIONS ]
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.RE
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.br
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.RS 4
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[ \fIVG\fP|\fILV\fP|\fITag\fP ... ]
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.RE
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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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.ad b
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.br
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.ad l
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[ \fB-h\fP|\fB--help\fP ]
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.ad b
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.br
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.ad l
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[ \fB-q\fP|\fB--quiet\fP ]
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.ad b
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.br
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.ad l
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[ \fB-t\fP|\fB--test\fP ]
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.ad b
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.br
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.ad l
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[ \fB-v\fP|\fB--verbose\fP ]
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.ad b
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.br
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.ad l
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[ \fB-y\fP|\fB--yes\fP ]
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.ad b
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.br
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.ad l
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[ \fB--commandprofile\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--config\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--driverloaded\fP \fBy\fP|\fBn\fP ]
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.ad b
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.br
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.ad l
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[ \fB--longhelp\fP ]
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.ad b
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.br
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.ad l
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[ \fB--profile\fP \fIString\fP ]
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.ad b
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.br
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.ad l
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[ \fB--version\fP ]
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.ad b
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.RE
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.SH OPTIONS
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.HP
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.ad l
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\fB--aligned\fP
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.br
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Use with --separator to align the output columns
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.ad b
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.HP
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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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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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.ad b
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.HP
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.ad l
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\fB--binary\fP
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.br
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Use binary values "0" or "1" instead of descriptive literal values
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for columns that have exactly two valid values to report (not counting
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the "unknown" value which denotes that the value could not be determined).
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.ad b
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.HP
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.ad l
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\fB-c\fP|\fB--colon\fP
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.br
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Generate colon separated output for easier parsing in scripts or programs.
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Also see vgs(8) which provides considerably more control over the output.
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.ad b
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.HP
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.ad l
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\fB-C\fP|\fB--columns\fP
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.br
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Display output in columns, the equivalent of vgs(8).
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Options listed are the same as options given in vgs(8).
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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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 lvm.conf settings.
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The String arg uses the same format as lvm.conf,
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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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.ad b
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.HP
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.ad l
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\fB--configreport\fP \fBlog\fP|\fBvg\fP|\fBlv\fP|\fBpv\fP|\fBpvseg\fP|\fBseg\fP
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.br
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See lvmreport(7).
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.ad b
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.HP
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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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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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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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\fB--foreign\fP
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.br
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Report/display foreign VGs that would otherwise be skipped.
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See lvmsystemid(7) for more information about foreign VGs.
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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\fB-H\fP|\fB--history\fP
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.br
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Include historical LVs in the output.
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(This has no effect unless LVs were removed while
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lvm.conf metadata/record_lvs_history was enabled.
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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\fB--ignoreskippedcluster\fP
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.br
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Use to avoid exiting with an non-zero status code if the command is run
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without clustered locking and clustered VGs are skipped.
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.ad b
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.HP
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.ad l
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\fB--logonly\fP
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.br
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Suppress command report and display only log report.
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.ad b
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.HP
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.ad l
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\fB--longhelp\fP
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.br
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Display long help text.
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.ad b
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.HP
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.ad l
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\fB-m\fP|\fB--maps\fP
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.br
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Display the mapping of logical extents to PVs and physical extents.
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To map physical extents to logical extents use:
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pvs --segments -o+lv_name,seg_start_pe,segtype
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.ad b
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.HP
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.ad l
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\fB--noheadings\fP
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.br
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Suppress the headings line that is normally the first line of output.
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Useful if grepping the output.
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.ad b
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.HP
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.ad l
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\fB--nosuffix\fP
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.br
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Suppress the suffix on output sizes. Use with --units
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(except h and H) if processing the output.
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.ad b
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.HP
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.ad l
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\fB-o\fP|\fB--options\fP \fIString\fP
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.br
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Comma-separated, ordered list of fields to display in columns.
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String arg syntax is: [+|-|#]Field1[,Field2 ...]
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The prefix \fB+\fP will append the specified fields to the default fields,
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\fB-\fP will remove the specified fields from the default fields, and
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\fB#\fP will compact specified fields (removing them when empty for all rows.)
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Use \fB-o help\fP to view the list of all available fields.
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Use separate lists of fields to add, remove or compact by repeating the -o option:
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-o+field1,field2 -o-field3,field4 -o#field5.
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These lists are evaluated from left to right.
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Use field name \fBlv_all\fP to view all LV fields,
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\fBvg_all\fP all VG fields,
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\fBpv_all\fP all PV fields,
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\fBpvseg_all\fP all PV segment fields,
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\fBseg_all\fP all LV segment fields, and
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\fBpvseg_all\fP all PV segment columns.
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See the lvm.conf report section for more config options.
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See lvmreport(7) for more information about reporting.
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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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.
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It can also be used to peek inside the metadata of clustered VGs
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when clustered locking is not configured or running. No attempt
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will be made to communicate with the device-mapper kernel driver, so
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this option is unable to report whether or not LVs are
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actually in use.
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.ad b
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.HP
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.ad l
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\fB--reportformat\fP \fBbasic\fP|\fBjson\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 lvm.conf.
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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. See \fBlvmreport\fP(7) for more information.
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.ad b
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.HP
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.ad l
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\fB--segments\fP
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.br
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.ad b
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.HP
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.ad l
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\fB-S\fP|\fB--select\fP \fIString\fP
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.br
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Select objects for processing and reporting based on specified criteria.
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The criteria syntax is described by \fB--select help\fP and \fBlvmreport\fP(7).
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For reporting commands, one row is displayed for each object matching the criteria.
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See \fB--options help\fP for selectable object fields.
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Rows can be displayed with an additional "selected" field (-o selected)
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showing 1 if the row matches the selection and 0 otherwise.
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For non-reporting commands which process LVM entities, the selection is
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used to choose items to process.
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.ad b
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.HP
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.ad l
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\fB--separator\fP \fIString\fP
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.br
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String to use to separate each column. Useful if grepping the output.
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.ad b
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.HP
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.ad l
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\fB--shared\fP
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.br
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Report/display shared VGs that would otherwise be skipped when
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lvmlockd is not being used on the host.
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See lvmlockd(8) for more information about shared VGs.
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.ad b
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.HP
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.ad l
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\fB-O\fP|\fB--sort\fP \fIString\fP
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.br
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Comma-separated ordered list of columns to sort by. Replaces the default
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selection. Precede any column with \fB-\fP for a reverse sort on that column.
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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\fB--unbuffered\fP
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.br
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Produce output immediately without sorting or aligning the columns properly.
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.ad b
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.HP
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.ad l
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\fB--units\fP \fBr\fP|\fBR\fP|\fBh\fP|\fBH\fP|\fBb\fP|\fBB\fP|\fBs\fP|\fBS\fP|\fBk\fP|\fBK\fP|\fBm\fP|\fBM\fP|\fBg\fP|\fBG\fP|\fBt\fP|\fBT\fP|\fBp\fP|\fBP\fP|\fBe\fP|\fBE\fP
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.br
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All sizes are output in these units:
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human-(r)eadable with '<' rounding indicator,
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(h)uman-readable, (b)ytes, (s)ectors, (k)ilobytes, (m)egabytes,
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(g)igabytes, (t)erabytes, (p)etabytes, (e)xabytes.
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Capitalise to use multiples of 1000 (S.I.) instead of 1024.
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Custom units can be specified, e.g. --units 3M.
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.ad b
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.HP
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.ad l
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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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.ad b
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.HP
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.ad l
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\fB--version\fP
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.br
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Display version information.
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.ad b
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.HP
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.ad l
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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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.ad b
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.SH VARIABLES
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.HP
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\fIVG\fP
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.br
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Volume Group name. See \fBlvm\fP(8) for valid names.
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.HP
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\fILV\fP
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.br
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Logical Volume name. See \fBlvm\fP(8) for valid names.
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An LV positional arg generally includes the VG name and LV name, e.g. VG/LV.
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.HP
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\fITag\fP
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.br
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Tag name. See \fBlvm\fP(8) for information about tag names and using tags
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in place of a VG, LV or PV.
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.HP
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\fIString\fP
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.br
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See the option description for information about the string content.
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.HP
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\fISize\fP[UNIT]
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.br
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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: \fBbBsSkKmMgGtTpPeE\fP.
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b|B is bytes, s|S is sectors of 512 bytes, k|K is kilobytes,
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m|M is megabytes, g|G is gigabytes, t|T is terabytes,
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p|P is petabytes, e|E is exabytes.
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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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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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.SH SEE ALSO
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.BR lvm (8)
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.BR lvm.conf (5)
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.BR lvmconfig (8)
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.BR pvchange (8)
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.BR pvck (8)
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.BR pvcreate (8)
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.BR pvdisplay (8)
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.BR pvmove (8)
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.BR pvremove (8)
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.BR pvresize (8)
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.BR pvs (8)
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.BR pvscan (8)
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.BR vgcfgbackup (8)
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.BR vgcfgrestore (8)
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.BR vgchange (8)
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.BR vgck (8)
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.BR vgcreate (8)
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.BR vgconvert (8)
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.BR vgdisplay (8)
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.BR vgexport (8)
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.BR vgextend (8)
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.BR vgimport (8)
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.BR vgimportclone (8)
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.BR vgmerge (8)
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.BR vgmknodes (8)
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.BR vgreduce (8)
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.BR vgremove (8)
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.BR vgrename (8)
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.BR vgs (8)
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.BR vgscan (8)
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.BR vgsplit (8)
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.BR lvcreate (8)
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.BR lvchange (8)
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.BR lvconvert (8)
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.BR lvdisplay (8)
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.BR lvextend (8)
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.BR lvreduce (8)
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.BR lvremove (8)
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.BR lvrename (8)
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.BR lvresize (8)
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.BR lvs (8)
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.BR lvscan (8)
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.BR lvm2-activation-generator (8)
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.BR blkdeactivate (8)
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.BR lvmdump (8)
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.BR dmeventd (8)
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.BR lvmetad (8)
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.BR lvmpolld (8)
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.BR lvmlockd (8)
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.BR lvmlockctl (8)
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.BR clvmd (8)
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.BR cmirrord (8)
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.BR lvmdbusd (8)
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.BR lvmsystemid (7)
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.BR lvmreport (7)
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.BR lvmraid (7)
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.BR lvmthin (7)
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.BR lvmcache (7)
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