Linux and UNIX Man Pages

Linux & Unix Commands - Search Man Pages

lvs(8) [centos man page]

LVS(8)							      System Manager's Manual							    LVS(8)

NAME
lvs - report information about logical volumes SYNOPSIS
lvs [--aligned] [-a|--all] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--ignoreskippedcluster] [--nameprefixes] [--noheadings] [--nosuffix] [-o|--options [+]Field[,Field]] [-O|--sort [+|-]Key1[,[+|-]Key2[,...]]] [-P|--partial] [--rows] [--separator Separator] [--segments] [--unbuffered] [--units hHbBsSkKmMgGtTpPeE] [--unquoted] [-v|--verbose] [--version] [VolumeGroupName [VolumeGroupName...]] DESCRIPTION
lvs produces formatted output about logical volumes. OPTIONS
See lvm(8) for common options. --aligned Use with --separator to align the output columns. --all Include information in the output about internal Logical Volumes that are components of normally-accessible Logical Volumes, such as mirrors, but which are not independently accessible (e.g. not mountable). The names of such Logical Volumes are enclosed within square brackets in the output. For example, after creating a mirror using lvcreate -m1 --mirrorlog disk , this option will reveal three internal Logical Volumes, with suffixes mimage_0, mimage_1, and mlog. --nameprefixes Add an "LVM2_" prefix plus the field name to the output. Useful with --noheadings to produce a list of field=value pairs that can be used to set environment variables (for example, in udev(7) rules). --noheadings Suppress the headings line that is normally the first line of output. Useful if grepping the output. --nosuffix Suppress the suffix on output sizes. Use with --units (except h and H) if processing the output. -o, --options Comma-separated ordered list of columns. Precede the list with '+' to append to the default selection of columns instead of replac- ing it. Use -o lv_all to select all logical volume columns, and -o seg_all to select all logical volume segment columns. Use -o help to view the full list of columns available. Column names include: chunk_size, convert_lv, copy_percent, data_lv, devices, discards, lv_attr, lv_host, lv_kernel_major, lv_ker- nel_minor, lv_kernel_read_ahead, lv_major, lv_minor, lv_name, lv_path, lv_profile, lv_read_ahead, lv_size, lv_tags, lv_time, lv_uuid, metadata_lv, mirror_log, modules, move_pv, origin, origin_size, pool_lv, raid_max_recovery_rate, raid_min_recovery_rate, raid_mismatch_count, raid_sync_action, raid_write_behind, region_size, segtype, seg_count, seg_pe_ranges, seg_size, seg_size_pe, seg_start, seg_start_pe, seg_tags, snap_percent, stripes, stripe_size, sync_percent, thin_count, transaction_id, writebehind, zero. With --segments, any "seg_" prefixes are optional; otherwise any "lv_" prefixes are optional. Columns mentioned in vgs(8) can also be chosen. The lv_attr bits are: 1 Volume type: (C)ache, (m)irrored, (M)irrored without initial sync, (o)rigin, (O)rigin with merging snapshot, (r)aid, (R)aid with- out initial sync, (s)napshot, merging (S)napshot, (p)vmove, (v)irtual, mirror or raid (i)mage, mirror or raid (I)mage out-of- sync, mirror (l)og device, under (c)onversion, thin (V)olume, (t)hin pool, (T)hin pool data, raid or pool m(e)tadata or pool metadata spare. 2 Permissions: (w)riteable, (r)ead-only, (R)ead-only activation of non-read-only volume 3 Allocation policy: (a)nywhere, (c)ontiguous, (i)nherited, c(l)ing, (n)ormal This is capitalised if the volume is currently locked against allocation changes, for example during pvmove(8). 4 fixed (m)inor 5 State: (a)ctive, (s)uspended, (I)nvalid snapshot, invalid (S)uspended snapshot, snapshot (m)erge failed, suspended snapshot (M)erge failed, mapped (d)evice present without tables, mapped device present with (i)nactive table 6 device (o)pen 7 Target type: (m)irror, (r)aid, (s)napshot, (t)hin, (u)nknown, (v)irtual. This groups logical volumes related to the same kernel target together. So, for example, mirror images, mirror logs as well as mirrors themselves appear as (m) if they use the origi- nal device-mapper mirror kernel driver; whereas the raid equivalents using the md raid kernel driver all appear as (r). Snap- shots using the original device-mapper driver appear as (s); whereas snapshots of thin volumes using the new thin provisioning driver appear as (t). 8 Newly-allocated data blocks are overwritten with blocks of (z)eroes before use. 9 Volume Health: (p)artial, (r)efresh needed, (m)ismatches exist, (w)ritemostly. (p)artial signifies that one or more of the Phys- ical Volumes this Logical Volume uses is missing from the system. (r)efresh signifies that one or more of the Physical Volumes this RAID Logical Volume uses had suffered a write error. The write error could be due to a temporary failure of that Physical Volume or an indication that it is failing. The device should be refreshed or replaced. (m)ismatches signifies that the RAID logical volume has portions of the array that are not coherent. Inconsistencies are detected by initiating a "check" on a RAID logical volume. (The scrubbing operations, "check" and "repair", can be performed on a RAID logical volume via the 'lvchange' command.) (w)ritemostly signifies the devices in a RAID 1 logical volume that have been marked write-mostly. 10 s(k)ip activation: this volume is flagged to be skipped during activation. -O, --sort Comma-separated ordered list of columns to sort by. Replaces the default selection. Precede any column with '-' for a reverse sort on that column. --rows Output columns as rows. --segments Use default columns that emphasize segment information. --separator Separator String to use to separate each column. Useful if grepping the output. --unbuffered Produce output immediately without sorting or aligning the columns properly. --units hHbBsSkKmMgGtTpPeE All sizes are output in these units: (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. Can also specify custom units e.g. --units 3M --unquoted When used with --nameprefixes, output values in the field=value pairs are not quoted. SEE ALSO
lvm(8), lvdisplay(8), pvs(8), vgs(8) Sistina Software UK LVM TOOLS 2.02.105(2)-RHEL7 (2014-03-26) LVS(8)
Man Page

Featured Tech Videos