Tables

• The table for a mapped device is constructed from a list of lines of the form:

  • <start> <length> <mapping> <mapping parameters>

• Sizes are always specified in sectors (512 bytes) throughout Device Mapper.

• The first line must have <start> = 0.

• <start> + <length> on one line must equal <start> on next line.

• <mapping parameters> are processed by the mapping.

• Example of a 32 MB device consisting of two 16MB mappings.

  • 0 32768 <mapping>
  • 32768 32768 <mapping>