lvchange \- change attributes of a logical volume
.SH SYNOPSIS
.B lvchange
-[\-\-addtag Tag]
-[\-A|\-\-autobackup y|n] [\-a|\-\-available y|n|ey|en|ly|ln]
-[\-\-alloc AllocationPolicy]
-[\-C|\-\-contiguous y|n] [\-d|\-\-debug] [\-\-deltag Tag]
-[\-\-resync]
-[\-h|\-?|\-\-help]
-[\-\-ignorelockingfailure]
-[\-\-ignoremonitoring]
-[\-\-monitor {y|n}]
-[\-\-poll {y|n}]
-[\-\-noudevsync]
-[\-M|\-\-persistent y|n] [\-\-minor minor]
-[\-P|\-\-partial]
-[\-p|\-\-permission r|rw] [\-r/\-\-readahead ReadAheadSectors|auto|none]
-[\-\-refresh]
-[\-t|\-\-test]
-[\-v|\-\-verbose] LogicalVolumePath [LogicalVolumePath...]
+.RB [ \-\-addtag
+.IR Tag ]
+.RB [ \-A | \-\-autobackup
+.RI { y | n }]
+.RB [ \-a | \-\-activate
+.RI [ a | e | l ]{ y | n }]
+.RB [ \-\-alloc
+.IR AllocationPolicy ]
+.RB [ \-C | \-\-contiguous
+.RI { y | n }]
+.RB [ \-d | \-\-debug ]
+.RB [ \-\-deltag
+.IR Tag ]
+.RB [ \-\-discard
+.RI { ignore | nopassdown | passdown }]
+.RB [ \-\-resync ]
+.RB [ \-h | \-? | \-\-help ]
+.RB [ \-\-ignorelockingfailure ]
+.RB [ \-\-ignoremonitoring ]
+.RB [ \-\-monitor
+.RI { y | n }]
+.RB [ \-\-poll
+.RI { y | n }]
+.RB [ \-\-sysinit ]
+.RB [ \-\-noudevsync ]
+.RB [ \-M | \-\-persistent
+.RI { y | n }]
+.RB [ \-\-minor
+.IR minor ]
+.RB [ \-P | \-\-partial ]
+.RB [ \-p | \-\-permission
+.RI { r | rw }]
+.RB [ \-r | \-\-readahead
+.RI { ReadAheadSectors | auto | none }]
+.RB [ \-\-refresh ]
+.RB [ \-t | \-\-test ]
+.RB [ \-v | \-\-verbose ]
+.RB [ \-Z | \-\-zero
+.RI { y | n }]
+.I LogicalVolumePath
+.RI [ LogicalVolumePath ...]
.SH DESCRIPTION
lvchange allows you to change the attributes of a logical volume
including making them known to the kernel ready for use.
.SH OPTIONS
-See \fBlvm\fP for common options.
+See \fBlvm\fP(8) for common options.
.TP
-.I \-a, \-\-available y|n|ey|en|ly|ln
+.BR \-a ", " \-\-activate " [" \fIa | \fIe | \fIl ]{ \fIy | \fIn }
Controls the availability of the logical volumes for use.
Communicates with the kernel device-mapper driver via
-libdevmapper to activate (-ay) or deactivate (-an) the
-logical volumes.
+libdevmapper to activate (\-ay) or deactivate (\-an) the
+logical volumes. If autoactivation option is used (\-aay),
+the logical volume is activated only if it matches an item in
+the activation/auto_activation_volume_list set in lvm.conf.
+Autoactivation is not yet supported for logical volumes that
+are part of partial or clustered volume groups.
.IP
If clustered locking is enabled, -aey will activate exclusively
on one node and -aly will activate only on the local node.
To deactivate only on the local node use -aln.
-Logical volumes with single-host snapshots are always activated
+Logical volumes with single-host snapshots are always activated
exclusively because they can only be used on one node at once.
.TP
-.I \-C, \-\-contiguous y|n
+.BR \-C ", " \-\-contiguous " {" \fIy | \fIn }
Tries to set or reset the contiguous allocation policy for
logical volumes. It's only possible to change a non-contiguous
logical volume's allocation policy to contiguous, if all of the
allocated physical extents are already contiguous.
.TP
-.I \-\-resync
+.BR \-\-discard " {" \fIignore | \fInopassdown | \fIpassdown }
+Set this to \fIignore\fP to ignore any discards received by a
+thin pool Logical Volume. Set to \fInopassdown\fP to process such
+discards within the thin pool itself and allow the no-longer-needed
+extents to be overwritten by new data. Set to \fIpassdown\fP to
+process them both within the thin pool itself and to pass them down
+the underlying device.
+.TP
+.B \-\-resync
Forces the complete resynchronization of a mirror. In normal
circumstances you should not need this option because synchronization
happens automatically. Data is read from the primary mirror device
time - and during this time you are without a complete redundant copy
of your data.
.TP
-.I \-\-minor minor
+.B \-\-minor \fIminor
Set the minor number.
.TP
-.I \-\-monitor y|n
-Controls whether or not a mirrored logical volume is monitored by
+.BR \-\-monitor " {" \fIy | \fIn }
+Start or stop monitoring a mirrored or snapshot logical volume with
dmeventd, if it is installed.
If a device used by a monitored mirror reports an I/O error,
-the failure is handled according to
+the failure is handled according to
\fBmirror_image_fault_policy\fP and \fBmirror_log_fault_policy\fP
set in \fBlvm.conf\fP.
.TP
-.I \-\-poll y|n
-Controls whether or not a logical volume's progress is polled. It may
-not be appropriate to immediately poll the progress of a logical
-volume's transformation when it is activated (for example, when merging
-a snapshot into the root FS). The progress polling of an incomplete
-pvmove or lvconvert can be deferred using \fB--poll n\fP and restarted
-using \fB--poll y\fP.
+.BR \-\-poll " {" \fIy | \fIn }
+Without polling a logical volume's backgrounded transformation process
+will never complete. If there is an incomplete pvmove or lvconvert (for
+example, on rebooting after a crash), use \fB\-\-poll y\fP to restart the
+process from its last checkpoint. However, it may not be appropriate to
+immediately poll a logical volume when it is activated, use
+\fB\-\-poll n\fP to defer and then \fB\-\-poll y\fP to restart the process.
+.TP
+.B \-\-sysinit
+Indicates that \fBlvchange\fP(8) is being invoked from early system
+initialisation scripts (e.g. rc.sysinit or an initrd),
+before writeable filesystems are available. As such,
+some functionality needs to be disabled and this option
+acts as a shortcut which selects an appropriate set of options. Currently
+this is equivalent to using \fB\-\-ignorelockingfailure\fP,
+\fB\-\-ignoremonitoring\fP, \fB\-\-poll n\fP and setting
+\fBLVM_SUPPRESS_LOCKING_FAILURE_MESSAGES\fP
+environment variable.
+
+If \fB\-\-sysinit\fP is used in conjunction with lvmetad(8) enabled and running,
+autoactivation is preferred over manual activation via direct lvchange call.
+Logical volumes are autoactivated according to auto_activation_volume_list
+set in lvm.conf(5).
.TP
-.I \-\-noudevsync
+.B \-\-noudevsync
Disable udev synchronisation. The
process will not wait for notification from udev.
It will continue irrespective of any possible udev processing
in the background. You should only use this if udev is not running
or has rules that ignore the devices LVM2 creates.
.TP
-.I \-\-ignoremonitoring
-Make no attempt to interact with dmeventd unless \-\-monitor
+.B \-\-ignoremonitoring
+Make no attempt to interact with dmeventd unless \fB\-\-monitor\fP
is specified.
Do not use this if dmeventd is already monitoring a device.
.TP
-.I \-M, \-\-persistent y|n
+.BR \-M ", " \-\-persistent " {" \fIy | \fIn }
Set to y to make the minor number specified persistent.
.TP
-.I \-p, \-\-permission r|rw
+.BR \-p ", " \-\-permission " {" \fIr | \fIrw }
Change access permission to read-only or read/write.
.TP
-.I \-r, \-\-readahead ReadAheadSectors|auto|none
+.BR \-r ", " \-\-readahead " {" \fIReadAheadSectors | \fIauto | \fInone }
Set read ahead sector count of this logical volume.
For volume groups with metadata in lvm1 format, this must
be a value between 2 and 120 sectors.
a suitable value automatically.
"None" is equivalent to specifying zero.
.TP
-.I \-\-refresh
+.B \-\-refresh
If the logical volume is active, reload its metadata.
This is not necessary in normal operation, but may be useful
-if something has gone wrong or if you're doing clustering
+if something has gone wrong or if you're doing clustering
manually without a clustered lock manager.
+.TP
+.BR \-Z ", " \-\-zero " {" \fIy | \fIn }
+Set zeroing mode for thin pool. Note: already provisioned blocks from pool
+in non-zero mode are not cleared in unwritten parts when setting zero to
+\fIy\fP.
.SH Examples
-"lvchange -pr vg00/lvol1" changes the permission on
-volume lvol1 in volume group vg00 to be read-only.
-
+Changes the permission on volume lvol1 in volume group vg00 to be read-only:
+.sp
+.B lvchange -pr vg00/lvol1
.SH SEE ALSO
-.BR lvm (8),
+.BR lvm (8),
.BR lvcreate (8),
.BR vgchange (8)
git://sourceware.org / lvm2.git / blobdiff