1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
|
.
.SH EXAMPLES
.
.P
Create a striped LV with 3 stripes, a stripe size of 8 KiB and a size of 100 MiB.
The LV name is chosen by lvcreate.
.br
.B lvcreate -i 3 -I 8 -L 100m vg00
.P
Create a raid1 LV with two images, and a usable size of 500 MiB. This
operation requires two devices, one for each mirror image. RAID metadata
(superblock and bitmap) is also included on the two devices.
.br
.B lvcreate --type raid1 -m1 -L 500m -n mylv vg00
.P
Create a mirror LV with two images, and a usable size of 500 MiB.
This operation requires three devices: two for mirror images and
one for a disk log.
.br
.B lvcreate --type mirror -m1 -L 500m -n mylv vg00
.P
Create a mirror LV with 2 images, and a usable size of 500 MiB.
This operation requires 2 devices because the log is in memory.
.br
.B lvcreate --type mirror -m1 --mirrorlog core -L 500m -n mylv vg00
.P
Create a copy-on-write snapshot of an LV:
.br
.B lvcreate --snapshot --size 100m --name mysnap vg00/mylv
.P
Create a copy-on-write snapshot with a size sufficient
for overwriting 20% of the size of the original LV.
.br
.B lvcreate -s -l 20%ORIGIN -n mysnap vg00/mylv
.P
Create a sparse LV with 1 TiB of virtual space, and actual space just under
100 MiB.
.br
.B lvcreate --snapshot --virtualsize 1t --size 100m --name mylv vg00
.P
Create a linear LV with a usable size of 64 MiB on specific physical extents.
.br
.B lvcreate -L 64m -n mylv vg00 /dev/sda:0-7 /dev/sdb:0-7
.P
Create a RAID5 LV with a usable size of 5 GiB, 3 stripes, a stripe size of
64 KiB, using a total of 4 devices (including one for parity).
.br
.B lvcreate --type raid5 -L 5G -i 3 -I 64 -n mylv vg00
.P
Create a RAID5 LV using all of the free space in the VG and spanning all the
PVs in the VG (note that the command will fail if there are more than 8 PVs in
the VG, in which case \fB-i 7\fP must be used to get to the current maximum of
8 devices including parity for RaidLVs).
.br
.B lvcreate --config allocation/raid_stripe_all_devices=1
.RS
.B --type raid5 -l 100%FREE -n mylv vg00
.RE
.P
Create RAID10 LV with a usable size of 5 GiB, using 2 stripes, each on
a two-image mirror. (Note that the \fB-i\fP and \fB-m\fP arguments behave
differently:
\fB-i\fP specifies the total number of stripes,
but \fB-m\fP specifies the number of images in addition
to the first image).
.br
.B lvcreate --type raid10 -L 5G -i 2 -m 1 -n mylv vg00
.P
Create a 1 TiB thin LV mythin, with 256 GiB thinpool tpool0 in vg00.
.br
.B lvcreate -T -V 1T --size 256G --name mythin vg00/tpool0
.P
Create a 1 TiB thin LV, first creating a new thin pool for it, where
the thin pool has 100 MiB of space, uses 2 stripes, has a 64 KiB stripe
size, and 256 KiB chunk size.
.br
.B lvcreate --type thin --name mylv --thinpool mypool
.RS
.B -V 1t -L 100m -i 2 -I 64 -c 256 vg00
.RE
.P
Create a thin snapshot of a thin LV (the size option must not be
used, otherwise a copy-on-write snapshot would be created).
.br
.B lvcreate --snapshot --name mysnap vg00/thinvol
.P
Create a thin snapshot of the read-only inactive LV named "origin"
which becomes an external origin for the thin snapshot LV.
.br
.B lvcreate --snapshot --name mysnap --thinpool mypool vg00/origin
.P
Create a cache pool from a fast physical device. The cache pool can
then be used to cache an LV.
.br
.B lvcreate --type cache-pool -L 1G -n my_cpool vg00 /dev/fast1
.P
Create a cache LV, first creating a new origin LV on a slow physical device,
then combining the new origin LV with an existing cache pool.
.br
.B lvcreate --type cache --cachepool my_cpool
.RS
.B -L 100G -n mylv vg00 /dev/slow1
.RE
.P
Create a VDO LV vdo0 with VDOPoolLV size of 10 GiB and name vpool1.
.br
.B lvcreate --vdo --size 10G --name vdo0 vg00/vpool1
|
