期刊名称：International Journal of Distributed Sensor Networks
印刷版ISSN：1550-1329
电子版ISSN：1550-1477
出版年度：2012
卷号：2012
DOI：10.1155/2012/835616
出版社：Hindawi Publishing Corporation
摘要：Efficient metadata management is a key issue in distributed file systems. Currently a single metadata server (MDS) was used to provide metadata service in many distributed file systems. As a result the MDS is likely to be the bottleneck of the system with the expanding scale. To deal with this problem, MDS cluster has been advanced. There are subtree partitioning and hashing partitioning to realize MDS cluster and so on. In view of the strengths and weaknesses of the previous methods, the paper proposes a half-dynamic subtree strategy that supports the replication of metadata, the dynamic addition and failure recovery of MDS. Finally we implement it in the open source pNFS file system and demonstrate its high performance and availability.
