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377 lines
9.5 KiB
Plaintext
377 lines
9.5 KiB
Plaintext
.TH PVMOVE 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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pvmove \(em Move extents from one physical volume to another
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.
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.SH SYNOPSIS
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.
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\fBpvmove\fP \fIposition_args\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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.
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.SH DESCRIPTION
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.
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pvmove moves the allocated physical extents (PEs) on a source PV to one or
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more destination PVs. You can optionally specify a source LV in which
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case only extents used by that LV will be moved to free (or specified)
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extents on the destination PV. If no destination PV is specified, the
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normal allocation rules for the VG are used.
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.P
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If pvmove is interrupted for any reason (e.g. the machine crashes) then
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run pvmove again without any PV arguments to restart any operations that
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were in progress from the last checkpoint. Alternatively, use the abort
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option at any time to abort the operation. The resulting location of LVs
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after an abort depends on whether the atomic option was used.
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.P
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More than one pvmove can run concurrently if they are moving data from
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different source PVs, but additional pvmoves will ignore any LVs already
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in the process of being changed, so some data might not get moved.
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.
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.SH USAGE
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.
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Move PV extents.
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.br
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.P
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\fBpvmove\fP \fIPV\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--autobackup\fP \fBy\fP|\fBn\fP ]
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.br
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[ \fB-n\fP|\fB--name\fP \fILV\fP ]
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.br
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[ \fB--alloc\fP \c
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.nh
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\%\fBcontiguous\fP|\:\fBcling\fP|\:\fBcling_by_tags\fP|\:\fBnormal\fP|\:\fBanywhere\fP|\:\fBinherit\fP
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.hy
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]
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.br
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[ \fB--atomic\fP ]
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.br
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[ \fB--noudevsync\fP ]
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.br
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[ \fB--reportformat\fP \fBbasic\fP|\fBjson\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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.RS 4
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[ \fIPV\fP ... ]
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.RE
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.P
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Continue or abort existing pvmove operations.
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.br
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.P
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\fBpvmove\fP
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.br
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.RS 4
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.ad l
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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 command:
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.
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.RS 4
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.ad l
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[ \fB-b\fP|\fB--background\fP ]
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.br
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[ \fB-i\fP|\fB--interval\fP \fINumber\fP ]
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.br
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[ \fB--abort\fP ]
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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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.
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.
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.HP
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\fB--abort\fP
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.br
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Abort any pvmove operations in progress. If a pvmove was started
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with the --atomic option, then all LVs will remain on the source PV.
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Otherwise, segments that have been moved will remain on the
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destination PV, while unmoved segments will remain on the source PV.
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.
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.HP
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.ad l
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\fB--alloc\fP \c
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.nh
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\%\fBcontiguous\fP|\:\fBcling\fP|\:\fBcling_by_tags\fP|\:\fBnormal\fP|\:\fBanywhere\fP|\:\fBinherit\fP
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.hy
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.ad b
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.br
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Determines the allocation policy when a command needs to allocate
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Physical Extents (PEs) from the VG. Each VG and LV has an allocation policy
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which can be changed with vgchange/lvchange, or overridden on the
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command line.
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\fBnormal\fP applies common sense rules such as not placing parallel stripes
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on the same PV.
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\fBinherit\fP applies the VG policy to an LV.
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\fBcontiguous\fP requires new PEs be placed adjacent to existing PEs.
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\fBcling\fP places new PEs on the same PV as existing PEs in the same
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stripe of the LV.
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If there are sufficient PEs for an allocation, but normal does not
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use them, \fBanywhere\fP will use them even if it reduces performance,
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e.g. by placing two stripes on the same PV.
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Optional positional PV args on the command line can also be used to limit
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which PVs the command will use for allocation.
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See \fBlvm\fP(8) for more information about allocation.
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.
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.HP
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\fB--atomic\fP
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.br
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Makes a pvmove operation atomic, ensuring that all affected LVs are
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moved to the destination PV, or none are if the operation is aborted.
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.
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.HP
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\fB-A\fP|\fB--autobackup\fP \fBy\fP|\fBn\fP
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.br
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Specifies if metadata should be backed up automatically after a change.
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Enabling this is strongly advised! See \fBvgcfgbackup\fP(8) for more information.
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.
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.HP
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\fB-b\fP|\fB--background\fP
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.br
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If the operation requires polling, this option causes the command to
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return before the operation is complete, and polling is done in the
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background.
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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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Devices that the command can use. This option can be repeated
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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-i\fP|\fB--interval\fP \fINumber\fP
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.br
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Report progress at regular intervals.
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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-n\fP|\fB--name\fP \fIString\fP
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.br
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Move only the extents belonging to the named LV.
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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.
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.
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.HP
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\fB--noudevsync\fP
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.br
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Disables udev synchronisation. The process will not wait for notification
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from udev. It will continue irrespective of any possible udev processing
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in the background. Only use this if udev is not running or has rules that
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ignore the devices LVM creates.
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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--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 \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. 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 PV
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Physical Volume name, a device path under /dev.
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For commands managing physical extents, a PV positional arg
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generally accepts a suffix indicating a range (or multiple ranges)
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of physical extents (PEs). When the first PE is omitted, it defaults
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to the start of the device, and when the last PE is omitted it defaults to end.
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Start and end range (inclusive): \fIPV\fP[\fB:\fP\fIPE\fP\fB-\fP\fIPE\fP]...
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Start and length range (counting from 0): \fIPV\fP[\fB:\fP\fIPE\fP\fB+\fP\fIPE\fP]...
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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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.
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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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