一种服务端驱动的无锁的文件元数据操作方法

A Server-Driven Lockless Method for File Metadata Operations

当前的大规模存储系统提供大量的聚合I/O带宽,但并没有实现高度的元数据扩展性以管理分布于成千上万存储节点之上的文件。本文提出服务端驱动的无锁元数据操作来改进文件元数据操作的扩展性。服务端驱动技术简化了一致性维护,无锁技术既避免了资源冲突,又增进了元数据操作的并行性。实现了文件创建、删除操作。实验结果表明,该方法能显著提高系统的性能和扩展性。

Current large-scale storage systems provide large amounts of aggregate I/O bandwidth, however, they do not achieve the high degree of metadata scalability required to manage files distributed across thousands of storage nodes. In this paper we suppose the server-driven lock less metadata operations to improve the scalability of file metadata operations. The server-driven technology simplifies the consistency maintenance, and the lock-less technology avoids resources contention and improves the parallelism of metadata operations. We implement the file creation and file removal operations and the experimental results indicate that it significantly improves the performance and the scalability of systems.