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man: lvcreate -W/--wipesignatures

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This commit is contained in:
Peter Rajnoha 2013-11-27 15:20:12 +01:00
parent eaa23d3273
commit 5968f07fd5
1 changed files with 19 additions and 2 deletions
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21
man/lvcreate.8.in
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@ -75,6 +75,7 @@ lvcreate \- create a logical volume in an existing volume group
.RB [ \-\-type
.IR SegmentType ]
.RB [ \-v | \-\-verbose ]
.RB [ \-W | \-\-wipesignatures ]
.RB [ \-Z | \-\-zero
.RI { y | n }]
.IR VolumeGroup { Name | Path }[/ ThinPoolLogicalVolumeName ]
@ -135,8 +136,9 @@ If autoactivation option is used (\fB\-a\fIay\fR), the logical volume is
activated only if it matches an item in the
.B activation/auto_activation_volume_list
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,
For autoactivated logical volumes, \fB\-\-zero\fP \fIn\fP and
\fB\-\-wipesignatures\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
.IR \fB\-a { a | l } y
will activate only on the local node.
@ -399,6 +401,21 @@ requested size using the zero target. A suffix of _vorigin is used for
this device. Note: using sparse snapshots is not efficient for larger
device sizes (GiB), thin provisioning should be used for this case.
.TP
.BR \-W ", " \-\-wipesignatures " {" \fIy | \fIn }
Controls wiping of detected signatures on newly created Logical Volume.
If this option is not specified, then by default signature wiping is done
each time the zeroing (\fB\-Z\fP/\fB\-\-zero\fP) is done. This default behaviour
can be controlled by \fBallocation/wipe_signatures_on_new_logical_volumes_when_zeroing\fP
setting found in \fBlvm.conf\fP(5).
.br
If blkid wiping is used (\fBallocation/use_blkid_wiping setting\fP in \fBlvm.conf\fP(5))
and LVM2 is compiled with blkid wiping support, then \fBblkid\fP(8) library is used
to detect the signatures (use \fBblkid -k\fP command to list the signatures that are recognized).
Otherwise, native LVM2 code is used to detect signatures (MD RAID, swap and LUKS
signatures are detected only in this case).
.br
Logical Volume is not wiped if the read only flag is set.
.TP
.BR \-Z ", " \-\-zero " {" \fIy | \fIn }
Controls zeroing of the first KiB of data in the new logical volume.
.br