Log Block FTL Algorithm

22 Apr

This paper puts forward a new technology and the log block FTL algorithm improves the robustness of the FAT file system. The technology is designed to ensure that all departments have been regarded as a unit, they are written to the flash memory or completely discard any interruption. In addition, the file system for flash file system they also added a log block FTL algorithm for an atomic write function security updates the metadata of the integrity and security. The simulation results show that, the FAT file system can even in power system security.

Li Pingchang proposed to prolong the service life of flash memory wear-leveling algorithm of double pool. The algorithm has two key concepts: one is to stop the erase block high abrasion resistance cold data stored in it and the other one is left alone block just involved in wear leveling. In addition, the algorithm does not require complex regulation, and can change in response to the spatial locality of workload.

We design and quick cleaning implement flash memory management in embedded system and mobile devices, flash translation layer, namely FTL / FC. The structure shown in figure 8. When the user performs a data access request, the file system based on disk (i.e., fat, ext3, etc.) will inform the file system data logical address FTL / FC. Then, the FTL / FC will find the logical address to physical address corresponding to the position of flash memory. Secondly, it performs the read, write, or erase operation flash memory


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