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108 lines
3.6 KiB
Plaintext
108 lines
3.6 KiB
Plaintext
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.SH EXAMPLES
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.
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.P
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Create a striped LV with 3 stripes, a stripe size of 8KiB and a size of 100MiB.
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The LV name is chosen by lvcreate.
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.br
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.B lvcreate -i 3 -I 8 -L 100m vg00
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.P
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Create a raid1 LV with two images, and a useable size of 500 MiB. This
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operation requires two devices, one for each mirror image. RAID metadata
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(superblock and bitmap) is also included on the two devices.
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.br
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.B lvcreate --type raid1 -m1 -L 500m -n mylv vg00
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.P
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Create a mirror LV with two images, and a useable size of 500 MiB.
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This operation requires three devices: two for mirror images and
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one for a disk log.
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.br
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.B lvcreate --type mirror -m1 -L 500m -n mylv vg00
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.P
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Create a mirror LV with 2 images, and a useable size of 500 MiB.
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This operation requires 2 devices because the log is in memory.
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.br
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.B lvcreate --type mirror -m1 --mirrorlog core -L 500m -n mylv vg00
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.P
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Create a copy-on-write snapshot of an LV:
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.br
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.B lvcreate --snapshot --size 100m --name mysnap vg00/mylv
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.P
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Create a copy-on-write snapshot with a size sufficient
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for overwriting 20% of the size of the original LV.
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.br
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.B lvcreate -s -l 20%ORIGIN -n mysnap vg00/mylv
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.P
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Create a sparse LV with 1TiB of virtual space, and actual space just under
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100MiB.
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.br
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.B lvcreate --snapshot --virtualsize 1t --size 100m --name mylv vg00
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.P
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Create a linear LV with a usable size of 64MiB on specific physical extents.
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.br
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.B lvcreate -L 64m -n mylv vg00 /dev/sda:0-7 /dev/sdb:0-7
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.P
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Create a RAID5 LV with a usable size of 5GiB, 3 stripes, a stripe size of
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64KiB, using a total of 4 devices (including one for parity).
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.br
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.B lvcreate --type raid5 -L 5G -i 3 -I 64 -n mylv vg00
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.P
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Create a RAID5 LV using all of the free space in the VG and spanning all the
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PVs in the VG (note that the command will fail if there are more than 8 PVs in
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the VG, in which case \fB-i 7\fP must be used to get to the current maximum of
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8 devices including parity for RaidLVs).
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.br
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.B lvcreate --config allocation/raid_stripe_all_devices=1
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.RS
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.B --type raid5 -l 100%FREE -n mylv vg00
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.RE
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.P
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Create RAID10 LV with a usable size of 5GiB, using 2 stripes, each on
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a two-image mirror. (Note that the \fB-i\fP and \fB-m\fP arguments behave
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differently:
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\fB-i\fP specifies the total number of stripes,
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but \fB-m\fP specifies the number of images in addition
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to the first image).
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.br
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.B lvcreate --type raid10 -L 5G -i 2 -m 1 -n mylv vg00
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.P
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Create a 1TiB thin LV mythin, with 256GiB thinpool tpool0 in vg00.
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.br
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.B lvcreate -T -V 1T --size 256G --name mythin vg00/tpool0
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.P
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Create a 1TiB thin LV, first creating a new thin pool for it, where
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the thin pool has 100MiB of space, uses 2 stripes, has a 64KiB stripe
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size, and 256KiB chunk size.
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.br
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.B lvcreate --type thin --name mylv --thinpool mypool
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.RS
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.B -V 1t -L 100m -i 2 -I 64 -c 256 vg00
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.RE
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.P
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Create a thin snapshot of a thin LV (the size option must not be
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used, otherwise a copy-on-write snapshot would be created).
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.br
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.B lvcreate --snapshot --name mysnap vg00/thinvol
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.P
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Create a thin snapshot of the read-only inactive LV named "origin"
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which becomes an external origin for the thin snapshot LV.
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.br
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.B lvcreate --snapshot --name mysnap --thinpool mypool vg00/origin
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.P
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Create a cache pool from a fast physical device. The cache pool can
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then be used to cache an LV.
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.br
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.B lvcreate --type cache-pool -L 1G -n my_cpool vg00 /dev/fast1
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.P
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Create a cache LV, first creating a new origin LV on a slow physical device,
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then combining the new origin LV with an existing cache pool.
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.br
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.B lvcreate --type cache --cachepool my_cpool
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.RS
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.B -L 100G -n mylv vg00 /dev/slow1
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.RE
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.P
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Create a VDO LV vdo0 with VDOPoolLV size of 10GiB and name vpool1.
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.br
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.B lvcreate --vdo --size 10G --name vdo0 vg00/vpool1
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