Device Mapper
In the Linux kernel, the device-mapper serves as a generic framework to map one block device onto another. It forms the foundation of LVM2, software RAIDs, dm-crypt disk encryption, and offers additional features such as file-system snapshots.
Device-mapper works by processing data passed in from a virtual block device, that it itself provides, and then passing the resultant data on to another block device.
Read more about Device Mapper: Applications, Device Mapper Applications
Famous quotes containing the word device:
“Syntax is the study of the principles and processes by which sentences are constructed in particular languages. Syntactic investigation of a given language has as its goal the construction of a grammar that can be viewed as a device of some sort for producing the sentences of the language under analysis.”
—Noam Chomsky (b. 1928)