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240 lines
7.7 KiB
Groff
240 lines
7.7 KiB
Groff
.TH LVS 8 "LVM TOOLS #VERSION#" "Sistina Software UK" \" -*- nroff -*-
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.SH NAME
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lvs \(em report information about logical volumes
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.SH SYNOPSIS
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.B lvs
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.RB [ \-\-aligned ]
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.RB [ \-\-binary ]
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.RB [ \-a | \-\-all ]
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.RB [ \-\-commandprofile
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.IR ProfileName ]
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.RB [ \-d | \-\-debug ]
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.RB [ \-h | \-? | \-\-help ]
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.RB [ \-\-ignorelockingfailure ]
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.RB [ \-\-ignoreskippedcluster ]
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.RB [ \-\-nameprefixes ]
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.RB [ \-\-noheadings ]
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.RB [ \-\-nosuffix ]
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.RB [ \-o | \-\-options
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.RI [ + ] Field [, Field ]]
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.RB [ \-O | \-\-sort
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.RI [ + | \- ] Key1 [,[ + | \- ] Key2 [,...]]]
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.RB [ \-P | \-\-partial ]
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.RB [ \-\-rows ]
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.RB [ \-S | \-\-select
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.IR Selection ]
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.RB [ \-\-separator
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.IR Separator ]
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.RB [ \-\-segments ]
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.RB [ \-\-unbuffered ]
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.RB [ \-\-units
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.IR hHbBsSkKmMgGtTpPeE ]
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.RB [ \-\-unquoted ]
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.RB [ \-v | \-\-verbose ]
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.RB [ \-\-version ]
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.RI [ VolumeGroupName | LogicalVolume { Name | Path }
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.RI [ VolumeGroupName | LogicalVolume { Name | Path }\ ...]]
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.SH DESCRIPTION
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lvs produces formatted output about logical volumes.
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.SH OPTIONS
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See
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.BR lvm (8)
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for common options.
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.TP
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.B \-\-aligned
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Use with \fB\-\-separator\fP to align the output columns.
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.TP
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.B \-\-binary
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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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.TP
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.B \-\-all
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Include information in the output about internal Logical Volumes that
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are components of normally-accessible Logical Volumes, such as mirrors,
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but which are not independently accessible (e.g. not mountable).
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The names of such Logical Volumes are enclosed within square brackets
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in the output. For example, after creating a mirror using
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.B lvcreate -m1 \-\-mirrorlog disk
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, this option will reveal three internal Logical
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Volumes, with suffixes mimage_0, mimage_1, and mlog.
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.TP
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.B \-\-nameprefixes
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Add an "LVM2_" prefix plus the field name to the output. Useful
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with \fB\-\-noheadings\fP to produce a list of field=value pairs that can
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be used to set environment variables (for example, in
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.BR udev (7)
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rules).
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.TP
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.B \-\-noheadings
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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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.TP
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.B \-\-nosuffix
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Suppress the suffix on output sizes. Use with \fB\-\-units\fP
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(except h and H) if processing the output.
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.TP
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.BR \-o ", " \-\-options
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Comma-separated ordered list of columns. Precede the list with '\fI+\fP'
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to append to the default selection of columns instead of replacing it.
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.IP
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Use \fB\-o lv_all\fP to select all logical volume columns,
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and \fB\-o seg_all\fP
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to select all logical volume segment columns.
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.IP
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Use \fB\-o help\fP to view the full list of columns available.
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.IP
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Column names include:
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chunk_size,
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convert_lv,
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copy_percent,
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data_lv,
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devices,
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discards,
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lv_attr,
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lv_host,
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lv_kernel_major,
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lv_kernel_minor,
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lv_kernel_read_ahead,
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lv_major,
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lv_minor,
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lv_name,
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lv_path,
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lv_profile,
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lv_read_ahead,
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lv_size,
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lv_tags,
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lv_time,
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lv_uuid,
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metadata_lv,
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mirror_log,
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modules,
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move_pv,
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origin,
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origin_size,
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pool_lv,
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raid_max_recovery_rate,
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raid_min_recovery_rate,
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raid_mismatch_count,
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raid_sync_action,
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raid_write_behind,
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region_size,
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segtype,
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seg_count,
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seg_pe_ranges,
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seg_size,
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seg_size_pe,
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seg_start,
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seg_start_pe,
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seg_tags,
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snap_percent,
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stripes,
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stripe_size,
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sync_percent,
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thin_count,
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transaction_id,
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zero.
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.IP
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With \fB\-\-segments\fP, any "seg_" prefixes are optional;
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otherwise any "lv_" prefixes are optional. Columns mentioned in
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.BR vgs (8)
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can also be chosen.
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.IP
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The lv_attr bits are:
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.RS
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.IP 1 3
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Volume type: (C)ache, (m)irrored, (M)irrored without initial sync, (o)rigin,
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(O)rigin with merging snapshot, (r)aid, (R)aid without initial sync,
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(s)napshot, merging (S)napshot, (p)vmove, (v)irtual,
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mirror or raid (i)mage, mirror or raid (I)mage out-of-sync, mirror (l)og device,
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under (c)onversion, thin (V)olume, (t)hin pool, (T)hin pool data, raid or
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pool m(e)tadata or pool metadata spare.
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.IP 2 3
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Permissions: (w)riteable, (r)ead-only, (R)ead-only activation of non-read-only
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volume
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.IP 3 3
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Allocation policy: (a)nywhere, (c)ontiguous, (i)nherited, c(l)ing, (n)ormal
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This is capitalised if the volume is currently locked against allocation
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changes, for example during
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.BR pvmove (8).
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.IP 4 3
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fixed (m)inor
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.IP 5 3
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State: (a)ctive, (s)uspended, (I)nvalid snapshot, invalid (S)uspended snapshot,
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snapshot (m)erge failed, suspended snapshot (M)erge failed,
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mapped (d)evice present without tables, mapped device present with (i)nactive table,
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(X) unknown
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.IP 6 3
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device (o)pen, (X) unknown
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.IP 7 3
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Target type: (C)ache, (m)irror, (r)aid, (s)napshot, (t)hin, (u)nknown, (v)irtual.
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This groups logical volumes related to the same kernel target together. So,
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for example, mirror images, mirror logs as well as mirrors themselves appear as
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(m) if they use the original device-mapper mirror kernel driver; whereas the raid
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equivalents using the md raid kernel driver all appear as (r).
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Snapshots using the original device-mapper driver appear as (s); whereas
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snapshots of thin volumes using the new thin provisioning driver appear as (t).
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.IP 8 3
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Newly-allocated data blocks are overwritten with blocks of (z)eroes before use.
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.IP 9 3
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Volume Health: (p)artial, (r)efresh needed, (m)ismatches exist, (w)ritemostly,
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(X) unknown.
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(p)artial signifies that one or more of the Physical Volumes this Logical
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Volume uses is missing from the system. (r)efresh signifies that one or
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more of the Physical Volumes this RAID Logical Volume uses had suffered a
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write error. The write error could be due to a temporary failure of that
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Physical Volume or an indication that it is failing. The device should be
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refreshed or replaced. (m)ismatches signifies that the RAID logical volume
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has portions of the array that are not coherent. Inconsistencies are
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detected by initiating a "check" on a RAID logical volume. (The scrubbing
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operations, "check" and "repair", can be performed on a RAID logical
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volume via the 'lvchange' command.) (w)ritemostly signifies the devices in
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a RAID 1 logical volume that have been marked write-mostly.
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.IP 10 3
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s(k)ip activation: this volume is flagged to be skipped during activation.
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.RE
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.TP
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.BR \-O ", " \-\-sort
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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 '\fI\-\fP' for a reverse sort on that column.
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.TP
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.B \-\-rows
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Output columns as rows.
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.TP
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.BR \-S ", " \-\-select " " \fISelection
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Display only rows that match Selection criteria. All rows are displayed with
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the additional "selected" column (\fB-o selected\fP) showing 1 if the row
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matches the Selection and 0 otherwise. The Selection criteria are defined
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by specifying column names and their valid values (that can include reserved
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values) while making use of supported comparison operators. See \fBlvm\fP(8)
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and \fB\-S\fP, \fB\-\-select\fP description for more detailed information
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about constructing the Selection criteria. As a quick help and to see full
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list of column names that can be used in Selection including the list of
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reserved values and the set of supported selection operators, check the
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output of \fBlvs -S help\fP command.
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.TP
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.B \-\-segments
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Use default columns that emphasize segment information.
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.TP
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.B \-\-separator \fISeparator
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String to use to separate each column. Useful if grepping the output.
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.TP
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.B \-\-unbuffered
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Produce output immediately without sorting or aligning the columns properly.
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.TP
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.B \-\-units \fIhHbBsSkKmMgGtTpPeE
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All sizes are output in these units: (h)uman-readable, (b)ytes, (s)ectors,
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(k)ilobytes, (m)egabytes, (g)igabytes, (t)erabytes, (p)etabytes, (e)xabytes.
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Capitalise to use multiples of 1000 (S.I.) instead of 1024. Can also specify
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custom units e.g. \fB\-\-units 3M\fP
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.TP
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.B \-\-unquoted
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When used with \fB\-\-nameprefixes\fP, output values in the field=value
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pairs are not quoted.
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.SH SEE ALSO
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.BR lvm (8),
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.BR lvdisplay (8),
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.BR pvs (8),
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.BR vgs (8)
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