云存储日志结构文件系统中段回收机制的研究

摘要

In order to improve the efficiency of the system to deal with the data of customs during the complicated index and collection process ,one method is proposed to enhance the storage management of cloud storage for recycling the system resource .A garbage collection method based on the bitmap describes the segment resource condition in HLFS ,and realizes the collection of segment in HLFS .The experiment of bitmap used in the cloud storage system will help improe the efficiency of collecting the garbage .%针对云存储文件系统中，复杂的检索和回收过程导致系统处理用户数据的能力下降问题，基于日志结构分布式文件系统（HDFS-based Log-structured File System ，HLFS），提出一种针对系统资源进行有效回收管理来提高云存储空间有效利用率的方法，通过位图标记的方式找到HLFS中段资源的使用情况，实现对HLFS中段资源的管理回收。实验结果表明，位图标记应用于云存储系统中资源管理之后，能够改善垃圾回收的效率。