Mappings

• The linear mapping takes as arguments a target device name (e.g. /dev/hda6) and a start sector and maps the range of sectors linearly to the target.

• The striped mapping handles striping across physical volumes. It takes as arguments the number of stripes and the striping chunk size followed by a list of pairs of device name and sector.

• The error mapping causes any I/O to the mapped sectors to fail. This is useful for defining gaps in the new logical device.

• Two disks can be joined together into one logical volume by creating a table with a pair of linear mappings, one for each disk.