man: updates for lvconvert and lvcreate

Cleanup and improvement on man pages.

WHATS_NEW

@@ -1,5 +1,6 @@
 Version 2.02.99 - 
 ===================================
+  Improve lvcreate, lvconvert and lvm man pages.
   Clean up format1 PV write to remove a need for an orphan VG for it to pass.
   Fix vgextend to not allow a PV with 0 MDAs to be used while already in a VG.
   Move update_pool_params() from /tools to /lib for better reuse.

man/lvconvert.8.in

@@ -96,14 +96,14 @@ lvconvert \- convert a logical volume from linear to mirror or snapshot
 .IR StripeSize ]]]
 .RB [ \-Z | \-\-zero
 .RI { y | n }]
-.RB [ \-h | \-? | \-\-help ]
-.RB [ \-v | \-\-verbose ]
-.RB [ \-\-version ]
 .RB [ \-T | \-\-thin
 .IR ExternalOriginLogicalVolume { Name | Path }
 .RB [ \-\-originname
 .IR NewExternalOriginVolumeName ]]
 .RI [ PhysicalVolume [ Path ][ :PE [ -PE ]]...]
+.RB [ \-h | \-? | \-\-help ]
+.RB [ \-v | \-\-verbose ]
+.RB [ \-\-version ]
 .sp
 
 .SH DESCRIPTION
@@ -124,10 +124,19 @@ the freed extents come first from the specified PhysicalVolumes.
 See \fBlvm\fP(8) for common options.
 .br
 Exactly one of
-.BR \-\-merge ", " \-\-mirrors ", " \-\-repair ", " \-\-replace
+.BR \-\-merge ,
-.RB ", " \-\-snapshot ", " \-\-splitmirrors " or " \-\-thinpool
+.BR \-\-mirrors ,
+.BR \-\-repair ,
+.BR \-\-replace ,
+.BR \-\-snapshot ,
+.BR \-\-splitmirrors
+or
+.BR \-\-thinpool
 arguments is required.
 .TP
+.BR \-b ", " \-\-background
+Run the daemon in the background.
+.TP
 .BR \-m ", " \-\-mirrors " " \fIMirrors
 Specifies the degree of the mirror you wish to create.
 For example, "\fB-m 1\fP" would convert the original logical
@@ -136,17 +145,17 @@ linear volume plus one copy.
 .TP
 .IR \fB\-\-mirrorlog " {" disk | core | mirrored }
 Specifies the type of log to use.
-The default is disk, which is persistent and requires
+The default is \fIdisk\fP, which is persistent and requires
 a small amount of storage space, usually on a separate device
 from the data being mirrored.
-Core may be useful for short-lived mirrors: It means the mirror is
+\fICore\fP may be useful for short-lived mirrors: It means the mirror is
 regenerated by copying the data from the first device again every
 time the device is activated - perhaps, for example, after every reboot.
-Using "mirrored" will create a persistent log that is itself mirrored.
+Using \fImirrored\fP will create a persistent log that is itself mirrored.
 .TP
 .B \-\-corelog
-The optional argument \fB--corelog\fP is the same as specifying
+The optional argument \fB\-\-corelog\fP is the same as specifying
-\fB--mirrorlog core\fP.
+\fB\-\-mirrorlog\fP \fIcore\fP.
 .TP
 .BR \-R ", " \-\-regionsize " " \fIMirrorLogRegionSize
 A mirror is divided into regions of this size (in MB), and the mirror log
@@ -157,14 +166,11 @@ Used to convert a logical volume to another segment type or to explicitly state
 the desired RAID1 segment type (\fImirror\fP or \fIraid1\fP) when converting
 a linear logical volume to a mirror with the \fB-m\fP argument.
 .TP
-.BR \-b ", " \-\-background
-Run the daemon in the background.
-.TP
 .BR \-i ", " \-\-interval " " \fISeconds
 Report progress as a percentage at regular intervals.
 .TP
 .B \-\-noudevsync
-Disable udev synchronisation. The
+Disables 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
@@ -176,7 +182,7 @@ to form a new logical volume.  A name must be supplied for the
 newly-split-off logical volume using the \fB\-\-name\fP argument, unless
 the \fB\-\-trackchanges\fP argument is given.
 .TP
-.B \-n \fIName
+.BR \-n ", " \-\-name\  \fIName
 The name to apply to a logical volume which has been split off from
 a mirror logical volume.
 .TP
@@ -190,21 +196,23 @@ Please note that this feature is only supported with the new md-based mirror
 implementation and not with the original device-mapper mirror implementation.
 .TP
 .B \-s, \-\-snapshot
-Create a snapshot from existing logical volume using another
+Creates a snapshot from existing logical volume using another
 existing logical volume as its origin.
 .TP
 .BR \-c ", " \-\-chunksize " " \fIChunkSize [ \fIbBsSkKmMgG ]
 Gives the size of chunk for snapshot and thin pool logical volumes.
+Default unit is in kilobytes.
+.br
 For snapshots the value must be power of 2 between 4KiB and 512KiB
 and the default value is 4.
+.br
 For thin pools the value must be between 64KiB and
 1GiB and the default value starts with 64 and scales
-up to fit the pool metadata size within 128MB,
+up to fit the pool metadata size within 128MiB,
 if the pool metadata size is not specified.
-Older dm thin pool target version (<1.4) requires the value to be power of 2.
+Thin pool target version <1.4 requires the value to be a power of 2.
-The newer version requires to be the multiple of 64KiB, however discard is
+The newer target version relaxes limitation to be a multiple of 64KiB.
-not supported for non power of 2 values.
+For target version <1.5 discard is not supported for non power of 2 values.
-Default unit is in kilobytes.
 .TP
 .BR \-\-discards " {" \fIignore | \fInopassdown | \fIpassdown }
 Sets discards behavior for thin pool.
@@ -235,11 +243,12 @@ be specified on the commandline or a @tag may be used to specify
 multiple snapshots be merged to their respective origin.
 .TP
 .B \-\-originname \fINewExternalOriginVolumeName\fP
-The name for converted external origin volume.
+The new name for original logical volume, which becomes external origin volume.
 .br
 Without this option a default names of "lvol#" will be generated where
 # is the LVM internal number of the logical volume.
-Converted volume will be read-only.
+This volume will be read-only and cannot be further modified as long,
+as it is being used as external origin.
 .TP
 .BR \-\-poolmetadata " " \fIThinPoolMetadataLogicalVolume { \fIName | \fIPath }
 Specifies thin pool metadata logical volume.
@@ -300,11 +309,13 @@ For metadata in LVM2 format, the stripe size may be a larger
 power of 2 but must not exceed the physical extent size.
 .TP
 .IR \fB\-T ", " \fB\-\-thin " " ExternalOriginLogicalVolume { Name | Path }
-Changes the logical volume into a thin volume for the thin pool
+Converts the logical volume into a thin logical volume of the thin pool
-specified with the option \fB\-\-thinpool\fP. \fIExternalOriginLogicalVolume\fP
+specified with \fB\-\-thinpool\fP. The original logical volume
-is converted into a new read-only logical volume which will be used as an
+.I ExternalOriginLogicalVolume
-external origin volume for unprovisioned areas.
+is renamed into a new read-only logical volume.
-The non-default name for this new volume can be specified with \fB\-\-originname\fP.
+The non-default name for this volume use \fB\-\-originname\fP.
+The volume cannot be further modified as long as it is used as an
+external origin volume for unprovisioned areas of any thin logical volume.
 .TP
 .IR \fB\-\-thinpool " " ThinPoolLogicalVolume { Name | Path }
 Changes logical volume into a thin pool volume. The volume
@@ -413,12 +424,13 @@ For the read-only external origin use the new name "vg00/external".
 
 .SH SEE ALSO
 .BR lvm (8),
-.BR vgcreate (8),
+.BR lvm.conf (5),
-.BR lvremove (8),
+.BR lvdisplay (8),
-.BR lvrename (8),
 .BR lvextend (8),
 .BR lvreduce (8),
-.BR lvdisplay (8),
+.BR lvremove (8),
+.BR lvrename (8),
 .BR lvscan (8),
-.BR thin_dump(8),
+.BR vgcreate (8),
-.BR thin_restore(8)
+.BR thin_dump (8),
+.BR thin_restore (8)

man/lvcreate.8.in

@@ -79,7 +79,8 @@ lvcreate \- create a logical volume in an existing volume group
 .IR ChunkSize [ bBsSkK ]]
 .RB [ \-\-noudevsync ]
 .RB [ \-\-ignoremonitoring ]
-.RB [ \-\-monitor " {" \fIy | \fIn }]
+.RB [ \-\-monitor
+.RI { y | n }]
 .RB [ \-n | \-\-name
 .IR SnapshotLogicalVolume { Name | Path }]
 .BR \-s | \-\-snapshot
@@ -116,27 +117,31 @@ By default, new Logical Volumes are activated (\fB-a\fIy\fR).
 If it is possible technically, \fB-a\fIn\fR will leave the new Logical
 Volume inactive. But for example, snapshots can only be created
 in the active state so \fB\-a\fIn\fR cannot be used with \fB\-\-snapshot\fP.
-Normally the \fB\-\-zero n\fP argument has to be supplied too because
+Normally the \fB\-\-zero\fP \fIn\fP argument has to be supplied too because
 zeroing (the default behaviour) also requires activation.
 If autoactivation option is used (\fB\-a\fIay\fR), the logical volume is
-activated only if it matches an item in the activation/auto_activation_volume_list
+activated only if it matches an item in the
-set in lvm.conf. For autoactivated logical volumes, \fB\-\-zero n\fP is
+.B activation/auto_activation_volume_list
-always assumed and it can't be overridden. If clustered locking is enabled,
+set in \fBlvm.conf\fP(5).
+For autoactivated logical volumes, \fB\-\-zero\fP \fIn\fP is always assumed
+and it can't be overridden. If the clustered locking is enabled,
 \fB\-a\fIey\fR will activate exclusively on one node and \fB\-a\fIly\fR will
 activate only on the local node.
 .TP
 .BR \-c ", " \-\-chunksize " " \fIChunkSize [ \fIbBsSkKmMgG ]
 Gives the size of chunk for snapshot and thin pool logical volumes.
+Default unit is in kilobytes.
+.br
 For snapshots the value must be power of 2 between 4KiB and 512KiB
 and the default value is 4.
+.br
 For thin pools the value must be between 64KiB and
 1GiB and the default value starts with 64 and scales
-up to fit the pool metadata size within 128MB,
+up to fit the pool metadata size within 128MiB,
 if the pool metadata size is not specified.
-Older dm thin pool target version (<1.4) requires the value to be power of 2.
+Thin pool target version <1.4 requires the value to be a power of 2.
-The newer version requires to be the multiple of 64KiB, however discard is
+The newer target version relaxes limitation to be a multiple of 64KiB.
-not supported for non power of 2 values.
+For target version <1.5 discard is not supported for non power of 2 values.
-Default unit is in kilobytes.
 .TP
 .BR \-C ", " \-\-contiguous " {" \fIy | \fIn }
 Sets or resets the contiguous allocation policy for
@@ -144,7 +149,7 @@ logical volumes. Default is no contiguous allocation based
 on a next free principle.
 .TP
 .BR \-\-discards " {" \fIignore | \fInopassdown | \fIpassdown }
-Set discards behavior for thin pool.
+Sets discards behavior for thin pool.
 Default is \fIpassdown\fP.
 .TP
 .BR \-i ", " \-\-stripes " " \fIStripes
@@ -152,9 +157,10 @@ Gives the number of stripes.
 This is equal to the number of physical volumes to scatter
 the logical volume.  When creating a RAID 4/5/6 logical volume,
 the extra devices which are necessary for parity are
-internally accounted for.  Specifying '\-i 3' would use 3 devices
+internally accounted for.  Specifying
-for striped logical volumes, 4 devices for RAID 4/5, and 5 devices
+.BI \-i 3
-for RAID 6.
+would use 3 devices for striped logical volumes,
+4 devices for RAID 4/5, and 5 devices for RAID 6.
 .TP
 .BR \-I ", " \-\-stripesize " " \fIStripeSize
 Gives the number of kilobytes for the granularity of the stripes.
@@ -163,6 +169,10 @@ StripeSize must be 2^n (n = 2 to 9) for metadata in LVM1 format.
 For metadata in LVM2 format, the stripe size may be a larger
 power of 2 but must not exceed the physical extent size.
 .TP
+.B \-\-ignoremonitoring
+Make no attempt to interact with dmeventd unless \fB\-\-monitor\fP
+is specified.
+.TP
 .IR \fB\-l ", " \fB\-\-extents " " LogicalExtentsNumber [ % { VG | PVS | FREE | ORIGIN }]
 Gives the number of logical extents to allocate for the new
 logical volume.
@@ -182,84 +192,84 @@ or \fIE\fR for exabytes is optional.
 .br
 Default unit is megabytes.
 .TP
-.B \-\-minor \fIminor
-Set the minor number.
-.TP
-.IR \fB\-M ", " \fB\-\-persistent " {" y | n }
-Set to y to make the minor number specified persistent.
-.TP
 .BR \-m ", " \-\-mirrors " " \fIMirrors
-Creates a mirrored logical volume with Mirrors copies.  For example,
+Creates a mirrored logical volume with \fIMirrors\fP copies.
-specifying "-m 1" would result in a mirror with two-sides; that is, a
+For example, specifying
-linear volume plus one copy.
+.BI -m 1
+would result in a mirror with two-sides; that is,
+a linear volume plus one copy.
 
-Specifying the optional argument --nosync will cause the creation
+Specifying the optional argument \fB\-\-nosync\fP will cause the creation
 of the mirror to skip the initial resynchronization.  Any data written
 afterwards will be mirrored, but the original contents will not be
 copied.  This is useful for skipping a potentially long and resource
 intensive initial sync of an empty device.
 
-The optional argument --mirrorlog specifies the type of log to be used.
+The optional argument \fB\-\-mirrorlog\fP specifies the type of log to be used.
-The default is disk, which is persistent and requires
+The default is \fIdisk\fP, which is persistent and requires
 a small amount of storage space, usually on a separate device from the
-data being mirrored.  Using core means the mirror is regenerated
+data being mirrored.  Using \fIcore\fP means the mirror is regenerated
 by copying the data from the first device again each time the
-device is activated, for example, after every reboot.  Using "mirrored"
+device is activated, for example, after every reboot.  Using \fImirrored\fP
 will create a persistent log that is itself mirrored.
 
-The optional argument --corelog is equivalent to --mirrorlog core.
+The optional argument \fB\-\-corelog\fP is equivalent
-
+to \fB\-\-mirrorlog\fP \fIcore\fP.
+.TP
+.IR \fB\-M ", " \fB\-\-persistent " {" y | n }
+Set to \fIy\fP to make the minor number specified persistent.
+.TP
+.B \-\-minor \fIminor
+Sets the minor number.
+.TP
+.BR \-\-monitor " {" \fIy | \fIn }
+Starts or avoids monitoring a mirrored, snapshot or thin pool 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
+.B activation/mirror_image_fault_policy
+and
+.B activation/mirror_log_fault_policy
+set in \fBlvm.conf\fP(5).
 .TP
 .IR \fB\-n ", " \fB\-\-name " " LogicalVolume { Name | Path }
-The name for the new logical volume.
+Sets the name for the new logical volume.
 .br
-Without this option a default names of "lvol#" will be generated where
+Without this option a default name of "lvol#" will be generated where
 # is the LVM internal number of the logical volume.
 .TP
 .B \-\-noudevsync
-Disable udev synchronisation. The
+Disables 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
-.BR \-\-monitor " {" \fIy | \fIn }
-Start or avoid 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
-\fBmirror_image_fault_policy\fP and \fBmirror_log_fault_policy\fP
-set in \fBlvm.conf\fP.
-.TP
-.B \-\-ignoremonitoring
-Make no attempt to interact with dmeventd unless \-\-monitor
-is specified.
-.TP
 .BR \-p ", " \-\-permission " {" \fIr | \fIrw }
-Set access permissions to read only or read and write.
+Sets access permissions to read only (\fIr\fP) or read and write (\fIrw\fP).
 .br
 Default is read and write.
 .TP
 .IR \fB\-\-poolmetadatasize " " ThinPoolMetadataSize [ bBsSkKmMgG ]
-Set the size of thin pool's metadata logical volume.
+Sets the size of thin pool's metadata logical volume.
-Supported value is in range between 2MiB and 16GiB.
+Supported values are in range between 2MiB and 16GiB.
 Default value is  (Pool_LV_size / Pool_LV_chunk_size * 64b).
 Default unit is megabytes.
 .TP
 .IR \fB\-r ", " \fB\-\-readahead " {" ReadAheadSectors | auto | none }
-Set read ahead sector count of this logical volume.
+Sets 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.
-The default value is "auto" which allows the kernel to choose
+The default value is \fIauto\fP which allows the kernel to choose
 a suitable value automatically.
-"None" is equivalent to specifying zero.
+\fINone\fP is equivalent to specifying zero.
 .TP
 .BR \-R ", " \-\-regionsize " " \fIMirrorLogRegionSize
-A mirror is divided into regions of this size (in MB), and the mirror log
+A mirror is divided into regions of this size (in MiB), and the mirror log
 uses this granularity to track which regions are in sync.
 .TP
 .IR \fB\-s ", " \fB\-\-snapshot " " OriginalLogicalVolume { Name | Path }
-Create a snapshot logical volume (or snapshot) for an existing, so called
+Creates a snapshot logical volume (or snapshot) for an existing, so called
 original logical volume (or origin).
 Snapshots provide a 'frozen image' of the contents of the origin
 while the origin can still be updated. They enable consistent
@@ -274,13 +284,13 @@ In case the snapshot runs out of storage, use
 to grow it. Shrinking a snapshot is supported by
 .BR lvreduce (8)
 as well. Run
-.BR lvdisplay (8)
+.BR lvs (8)
 on the snapshot in order to check how much data is allocated to it.
-Note that a small amount of the space you allocate to the snapshot is
+Note: a small amount of the space you allocate to the snapshot is
 used to track the locations of the chunks of data, so you should
-allocate slightly more space than you actually need and monitor the
+allocate slightly more space than you actually need and monitor
-rate at which the snapshot data is growing so you can avoid running out
+(\fB\-\-monitor\fP) the rate at which the snapshot data is growing
-of space.
+so you can \fBavoid\fP running out of space.
 .TP
 .IR \fB\-T ", " \fB\-\-thin ", " \fB\-\-thinpool " " ThinPoolLogicalVolume { Name | Path }
 Creates thin pool or thin logical volume or both.
@@ -295,30 +305,44 @@ from kernel 3.2 or newer.
 .TP
 .B \-\-type \fISegmentType
 Create a logical volume that uses the specified segment type
-(e.g. "raid5", "mirror", "snapshot", "thin", "thin-pool").
+(e.g.
+.IR mirror ( \fB\-m ),
+.IR raid5 ,
+.IR snapshot ( \fB\-s ),
+.IR thin ( \fB\-T ),
+.IR thin-pool ,\ ...).
 Many segment types have a
 commandline switch alias that will enable their use
-(\fB\-s\fP is an alias for \fB\-\-type snapshot\fP).
+(\fB\-s\fP is an alias for
+.B \-\-type \fIsnapshot\fP).
 However, this argument must be used when no existing
 commandline switch alias is available for the desired type,
 as is the case with
-.IR error ", " zero ", " raid1 ", " raid10 ", " raid4 ", " raid5 " or " raid6 .
+.IR error ,
+.IR raid1 ,
+.IR raid4 ,
+.IR raid5 ,
+.IR raid6 ,
+.IR raid10
+or
+.IR zero .
 .TP
 .BR \-V ", " \-\-virtualsize " " \fIVirtualSize [ \fIbBsSkKmMgGtTpPeE ]
-Create a sparse device of the given size (in MB by default) using a snapshot
+Creates a sparse device of the given size (in MiB by default) using a snapshot
 or thinly provisioned device when thin pool is specified.
 Anything written to the device will be returned when reading from it.
 Reading from other areas of the device will return blocks of zeros.
 Virtual snapshot is implemented by creating a hidden virtual device of the
 requested size using the zero target.  A suffix of _vorigin is used for
-this device.
+this device. Note: using sparse snapshots is not efficient for larger
+device sizes (GiB), thin provisioning should be used for this case.
 .TP
 .BR \-Z ", " \-\-zero " {" \fIy | \fIn }
-Controls zeroing of the first KB of data in the new logical volume.
+Controls zeroing of the first KiB of data in the new logical volume.
 .br
-Default is yes.
+Default is \fIy\fPes.
 .br
-Volume will not be zeroed if read only flag is set.
+Volume will not be zeroed if the read only flag is set.
 .br
 Snapshot volumes are zeroed always.
 
@@ -326,15 +350,16 @@ Snapshot volumes are zeroed always.
 Warning: trying to mount an unzeroed logical volume can cause the system to
 hang.
 .SH Examples
-Creates a striped logical volume with 3 stripes, a stripesize of 8KB
+Creates a striped logical volume with 3 stripes, a stripe size of 8KiB
-and a size of 100MB in the volume group named vg00.
+and a size of 100MiB in the volume group named vg00.
 The logical volume name will be chosen by lvcreate:
 .sp
 .B lvcreate \-i 3 \-I 8 \-L 100M vg00
 
 Creates a mirror logical volume with 2 sides with a useable size of 500 MiB.
-This operation would require 3 devices (or option --alloc anywhere) - two
+This operation would require 3 devices (or option
-for the mirror devices and one for the disk log:
+.BI \-\-alloc \ anywhere
+) - two for the mirror devices and one for the disk log:
 .sp
 .B lvcreate \-m1 \-L 500M vg00
 
@@ -368,10 +393,11 @@ a parity drive for a total of 4 devices) and a stripesize of 64KiB:
 .B lvcreate \-\-type raid5 \-L 5G \-i 3 \-I 64 \-n my_lv vg00
 
 Creates a 5GiB RAID10 logical volume "vg00/my_lv", with 2 stripes on
-2 2-way mirrors.  Note that the '-i' and '-m' arguments behave differently.
+2 2-way mirrors.  Note that the \fB-i\fP and \fB-m\fP arguments behave differently.
-The '-i' specifies the number of stripes.  The '-m' specifies the number of
+The \fB-i\fP specifies the number of stripes.
+The \fB-m\fP specifies the number of
 .B additional
-copies.
+copies:
 .sp
 .B lvcreate \-\-type raid10 \-L 5G \-i 2 \-m 1 \-n my_lv vg00
 
@@ -383,11 +409,12 @@ build with 2 stripes 64KiB and chunk size 256KiB together with
 
 .SH SEE ALSO
 .BR lvm (8),
-.BR vgcreate (8),
+.BR lvm.conf (5),
 .BR lvchange (8),
-.BR lvremove (8),
-.BR lvrename (8)
 .BR lvextend (8),
 .BR lvreduce (8),
-.BR lvdisplay (8),
+.BR lvremove (8),
-.BR lvscan (8)
+.BR lvrename (8)
+.BR lvs (8),
+.BR lvscan (8),
+.BR vgcreate (8)

man/lvm.8.in

@@ -21,6 +21,8 @@ that command.
 On invocation, \fBlvm\fP requires that only the standard file descriptors
 stdin, stdout and stderr are available.  If others are found, they
 get closed and messages are issued warning about the leak.
+This warning can be suppressed by setting enviromental variable
+.B LVM_SUPPRESS_FD_WARNINGS\fP.
 .LP
 Where commands take VG or LV names as arguments, the full path name is
 optional.  An LV called "lvol0" in a VG called "vg0" can be specified
@@ -150,7 +152,7 @@ The following options are available for many of the commands.
 They are implemented generically and documented here rather
 than repeated on individual manual pages.
 .TP
-.BR \-h ", " \-\-help
+.BR \-h ", " \-? ", " \-\-help
 Display the help text.
 .TP
 .B \-\-version
@@ -235,15 +237,9 @@ and as of version 2.02.78 the following characters are also accepted:
 Delete the tag \fITag\fP from a PV, VG or LV, if it's present.
 Supply this argument multiple times to remove more than one tag at once.
 .TP
-.B \-\-alloc \fIAllocationPolicy
+.IR \fB\-\-alloc \ { anywhere | contiguous | cling | inherit | normal }
-The allocation policy to use:
+Selects the allocation policy when a command needs to allocate
-.IR contiguous ,
+Physical Extents from the Volume Group.
-.IR cling ,
-.IR normal ,
-.IR anywhere " or"
-.IR inherit .
-When a command needs to allocate Physical Extents from the Volume Group,
-the allocation policy controls how they are chosen.
 Each Volume Group and Logical Volume has an allocation policy defined.
 The default for a Volume Group is \fInormal\fP which applies
 common-sense rules such as not placing parallel stripes on the same
@@ -269,6 +265,10 @@ shell is invoked.
 Directory containing \fBlvm.conf\fP(5) and other LVM system files.
 Defaults to "#DEFAULT_SYS_DIR#".
 .TP
+.B LVM_SUPPRESS_FD_WARNINGS
+Suppress warnings about openned file descriptors, when lvm command
+is executed.
+.TP
 .B LVM_VG_NAME
 The Volume Group name that is assumed for
 any reference to a Logical Volume that doesn't specify a path.
@@ -351,7 +351,7 @@ restrictions described above applied to each step leave the tools no
 discretion over the layout.
 
 To view the way the allocation process currently works in any specific
-case, read the debug logging output, for example by adding \-vvvv to
+case, read the debug logging output, for example by adding \fB\-vvvv\fP to
 a command.
 .SH DIAGNOSTICS
 All tools return a status code of zero on success or non-zero on failure.
@@ -360,6 +360,7 @@ All tools return a status code of zero on success or non-zero on failure.
 .br
 .I $HOME/.lvm_history
 .SH SEE ALSO
+.BR lvm.conf (5),
 .BR clvmd (8),
 .BR lvchange (8),
 .BR lvcreate (8),
@@ -398,5 +399,4 @@ All tools return a status code of zero on success or non-zero on failure.
 .BR vgs (8),
 .BR vgscan (8),
 .BR vgsplit (8),
-.BR readline (3),
+.BR readline (3)
-.BR lvm.conf (5)