Installation guide

The striped Mapping Target
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start
starting block in virtual device
length
length of this segment
#stripes
number of stripes for the virtual device
chunk_size
number of sectors written to each stripe before switching to the next; must be power of 2 at least
as big as the kernel page size
device
block device, referenced by the device name in the filesystem or by the major and minor numbers
in the format major:minor.
offset
starting offset of the mapping on the device
The following example shows a striped target with three stripes and a chunk size of 128:
0 73728 striped 3 128 8:9 384 8:8 384 8:7 9789824
0
starting block in virtual device
73728
length of this segment
striped 3 128
stripe across three devices with chunk size of 128 blocks
8:9
major:minor numbers of first device
384
starting offset of the mapping on the first device
8:8
major:minor numbers of second device
384
starting offset of the mapping on the second device
8:7
major:minor numbers of third device
9789824
starting offset of the mapping on the third device
The following example shows a striped target for 2 stripes with 256 KiB chunks, with the device
parameters specified by the device names in the file system rather than by the major and minor
numbers.