分布式存储系统中用户磁盘空间分配策略  

User Disk Space Allocation Policy in Distributed Storage System

作　　者：谭子军[1] 何连跃[1] 

机构地区：[1]国防科学技术大学计算机科学与技术学院,长沙410073

出　　处：《计算机工程》2010年第9期44-46,共3页Computer Engineering

基　　金：国家"863"计划基金资助项目"分布加密存储软件结构及其关键技术"(2007AA012408)

摘　　要：针对用户文件的分布式存放导致的磁盘空间管理问题,提出一种在分布式存储系统中动态分配磁盘空间的策略,在保持用户磁盘配额大小不变的情况下,根据各存储节点的数据量差异,按需分配用户实际所用的存储空间。与传统的磁盘分配机制相比,该方法简便灵活,更能适应网络存储数据的动态变化,有效提高磁盘空间资源的利用率。Aiming at the problem that allocating disk space result of the distribution of user files stored is concerned by the people,this paper presents a policy which is named dynamic allocation of disk space in distributed storage system.It maintains the size of the user disk quota unchanged,and allocates the actual storage space for user on demand according to the amount of data difference in each storage node.Compared with traditional disk allocation mechanism,this method is more simple and flexible,and it can rather adapt to the dynamic changes of the network storage data,and improve effectively the utilization of disk space resources.

关 键 词：分布式存储系统 磁盘配额 物理空间 按需分配 

分 类 号：TP311.12[自动化与计算机技术—计算机软件与理论]