1 files changed, 97 insertions, 50 deletions
diff --git a/man/lvchange.8.in b/man/lvchange.8.in
index e269802..32a0580 100644
--- a/man/lvchange.8.in
+++ b/man/lvchange.8.in
@@ -3,49 +3,84 @@
 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}]
-[\-\-sysinit]
-[\-\-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 [ \-\-discards
+.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 \-\-discards " {" \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 (the
+default) 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
@@ -53,53 +88,60 @@ and copied to the others, so this can take a considerable amount of
 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
+.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
+.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
+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.
+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
-.I \-\-sysinit
-Indicates that lvchange(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
+.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
+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.
@@ -107,16 +149,21 @@ The default value is "auto" which allows the kernel to choose
 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)