摘要： 为得到有效的元数据分布，获得多元数据服务器的负载均衡，提出一种分布式元数据的动态管理系统。利用负载均衡算法选择合适热度的子树，通过子树迁移策略将选定的子树迁移到合适的元数据服务器上进行管理，采用子树复制策略降低元数据服务器负载。实验结果证明，该系统能实现元数据的均匀分布。

关键词: 海量存储, 元数据管理, 动态子树划分, 子树迁移, 子树复制, 目录子树

Abstract: To obtain the effective distribution of metadata and load balance of the multi metadata servers, this paper presents a dynamic management system of distributed metadata, which makes use of load balancing algorithms to select some appropriate subtrees, then uses migration strategy to migrate these subtrees to proper metadata servers, and utilizes replication strategy to reduce the load of the metadata server which is produced by reading metadata operation. Experimental results show that the system can obtain the effective distribution of metadata.

Key words: mass storage, metadata management, dynamic subtree partition, subtree migration, subtree replication, directory subtree

中图分类号: 

• TP311.13