Gaurav's Tech Explorations Home Concept Of Device Mapper Target Writing Your Own Device Mapper Target corrects IE6 width calculation google_ad_section_start(name=default) Writing Your Own Device Mapper Target Device Mapper In the Linux kernel, the device-mapper serves as a generic framework to map a virtual layer of block devices onto existing block devices. The device mapper framework promotes a clean separation of policy and mechanism between user and kernel space respectively. It forms the foundation of LVM2 and EVMS, software RAIDs, dm-crypt disk encryption, and offers additional features such as file-system snapshots. Device-mapper works by processing data passed in from virtual block devices, tha...