Lustre文件系统中范围锁机制的应用研究

Application and research of extent lock in the Lustre

分布式锁机制是分布式文件系统的重要机制,Lustre是一种高性能的分布式文件系统,针对现有的范围锁机制,在处理多客户端大量并发的密集型共享文件访问时,存在操作延迟、文件数据一致性管理复杂的问题,为了解决这类问题采用了可伸的锁范围划定、对范围锁赋予周期、范围锁版本控制相结合的改进机制。实验结果表明,采用改进后的范围锁机制,不仅保证了文件数据的一致性,一定程度上降低了并发文件访问延迟,从而保证了分布式文件系统的I/O性能。

Distributed lock-management is the important role of the distributed filesystem.Lustre is a High-performance distributed filesystem.For its existing range of locking mechanisms,in dealing with multiple clients sharing a large of concurrent file access intensive,there is delay in operation,file management of complex issues of data consistency.To solve such problems can be extended by the delineation of the scope of the lock,the lock on the range given cycle,the scope of the combination lock to improve version control mechanism.The results show that,using this mechanism to effectively ensure the consistency of file data,concurrent file access latency reduction,thereby enhancing the distributed file system I/O performance.