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Thin lvcreate man update

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Added poolmetadatasize options
Add an example.
This commit is contained in:
Zdenek Kabelac 2011-11-04 22:47:17 +00:00
parent 83baa0b778
commit 7060c9d942
1 changed files with 38 additions and 18 deletions
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56
man/lvcreate.8.in
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@ -79,26 +79,27 @@ lvcreate \- create a logical volume in an existing volume group
.br
.B lvcreate
.BR \-T | \-\-thin
.IR VolumeGroupName [ Path ][/ ThinPoolLogicalVolumeName
.RB [{ \-l | \-\-extents
.IR LogicalExtentsNumber [ % { VG | FREE | ORIGIN }]
|
.BR \-L | \-\-size
.IR LogicalVolumeSize [ bBsSkKmMgGtTpPeE ]}
.RB [ \-i | \-\-stripes
.IR Stripes
.RB [ \-I | \-\-stripesize
.IR StripeSize ]]
.RB [ \-l | \-\-extents
.IR LogicalExtentsNumber [ % { VG | FREE | ORIGIN }]
|
.BR \-L | \-\-size
.IR LogicalVolumeSize [ bBsSkKmMgGtTpPeE ]]
.RB [ \-c | \-\-chunksize
.IR ChunkSize ]
.RB [ \-\-poolmetadatasize
.IR MetadataSize [ bBsSkKmMgGt ]]]
.RB [ \-\-thinpool
.IR ThinPoolLogicalVolumeName [ Path ]]
.RB [ \-V | \-\-virtualsize
.IR VirtualSize ]
.IR VirtualSize [ bBsSkKmMgGtTpPeE ]]
.RB [ \-n | \-\-name
.IR ThinLogicalVolumeName ]
.RB [ \-T | \-\-thin
.IR VolumeGroupName [/ ThinPoolLogicalVolumeName
|
.B \-\-thinpool
.IR ThinPoolLogicalVolumeName ]]
.IR ThinLogicalVolumeName [ Path ]]
.br
.SH DESCRIPTION
@ -234,6 +235,12 @@ is specified.
Set access permissions to read only or read and write.
.br
Default is read and write.
.TP
.IR \fB\-\-poolmetadatasize " " MetadataSize [ bBsSkKmMgG ]
Set the size of thin pool's metadata logical volume.
Supported value is in range between 2MiB and 16GiB.
Default value is (Pool_LV_size / Pool_LV_chunk_size * 64b).
.TP
.IR \fB\-r ", " \fB\-\-readahead " {" ReadAheadSectors | auto | none }
Set read ahead sector count of this logical volume.
@ -269,17 +276,24 @@ of space.
.TP
.B \-\-type \fISegmentType
Create a logical volume that uses the specified segment type
(e.g. "raid5", "mirror", "snapshot"). Many segment types have a
(e.g. "raid5", "mirror", "snapshot", "thin", "thin_pool").
Many segment types have a
commandline switch alias that will enable their use (-s is an alias for
--type snapshot). However, this argument must be used when no existing
commandline switch alias is available for the desired type, as is the case
with "error", "zero", "raid1", "raid4", "raid5", or "raid6".
.TP
.BR \-T ", " \-\-thin " " \fIVolumeGroupName [/ \fIThinPoolLogicalVolumeName ]
Defines the thin pool logical volume.
.TP
.BR \-\-thinpool " " \fIThinPoolLogicalVolumeName
Specifies the thin pool logical volume.
.IR \fB\-T ", " \fB\-\-thin ", " \fB\-\-thinpool " " ThinPoolLogicalVolumeName [ Path ]
Creates thin pool or thin logical volume or both.
Specifying the optional argument --size will cause the creation of
the thin pool logical volume.
Specifying the optional argument --virtualsize will cause the creation of
the thin logical volume from given thin pool volume.
Specifying both arguments will cause the creation of both
thin pool and thin volume using this pool.
Requires device mapper kernel driver for thin provisioning
from kernel 3.2 or newer.
.TP
.IR \fB\-V ", " \fB\-\-virtualsize " " VirtualSize [ bBsSkKmMgGtTpPeE ]
Create a sparse device of the given size (in MB by default) using a snapshot
@ -344,6 +358,12 @@ a parity drive for a total of 4 devices) and a stripesize of 64kiB.
.sp
.B lvcreate --type raid5 -L 5G -i 3 -I 64 -n my_lv vg00
Creates 100MiB pool logical volume for thin provisioning
build with 2 stripes 64KiB and chunk size 128KiB together with
1TiB thin provisioned logical volume "vg00/thin_lv".
.sp
.B lvcreate -i 2 -I 64 -c 256 -L100M -T vg00/pool -V 1T --name thin_lv
.SH SEE ALSO
.BR lvm (8),
.BR vgcreate (8),