Storage Management Strategy of Flash-Based Platform  

作　　者：王太勇 赵丽 胡世广 王涛 

机构地区：[1]School of Mechanical Engineering, Tianjin University

出　　处：《Transactions of Tianjin University》2009年第4期266-271,共6页天津大学学报（英文版）

基　　金：Supported by National Natural Science Foundation of China (No50475117);Specialized Research Fund for the Doctoral Program of Higher Education of China (No20060056016)

摘　　要：Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded system with flash-based memory is developed. To guarantee the average usage of flash storage sectors, the strategy of wear leveling and adaptive damage management is introduced, in which a dynamic storage space management mode and the strategy of first in first out (FIFO) are adopted. Moreover, the strategy of redundancy design and fast-calculation and tracing is also adopted to extend the life of kernel sector, which can guarantee the reliable service of system booting. The practical application in an embedded CNC (computerized numerical control) platform proves that the file system has effective performance. Furthermore, the flash file system can be transplanted to different embedded platforms by changing a few bottom hardware parameters with universality.Storage management strategy can be expressed by a file system. Commercial file system for embedded application is generally complicated and resource wasted. In this paper, a specified file system adapted to embedded system with flash-based memory is developed. To guarantee the average usage of flash storage sectors, the strategy of wear leveling and adaptive damage management is introduced, in which a dynamic storage space management mode and the strategy of first in first out （FIFO） are adopted. Moreover, the strategy of redundancy design and fast-calculation and tracing is also adopted to extend the life of kernel sector, which can guarantee the reliable service of system booting. The practical application in an embedded CNC （computerized numerical control） platform proves that the file system has effective performance. Furthermore, the flash file system can be transplanted to different embedded platforms by changing a few bottom hardware parameters with universality.

关 键 词：storage management embedded system flash-based platform wear leveling 

分 类 号：TP333[自动化与计算机技术—计算机系统结构]