Application and research of extent lock in the Lustre

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.