Hummer:面向NVMe闪存设备的对象存储系统  

Hummer:an OSD for NVMe-Based Object Storage

作　　者：李思阳 刘粉林[1] LI Siyang;LIU Fenlin(Information Engineering University, Zhengzhou 450001, China)

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2019年第4期421-426,共6页Journal of Information Engineering University

基　　金：国家自然科学基金资助项目(61772300)。

摘　　要：基于NVMe的高速闪存由于多层次的抽象和语义限制,无法在分布式文件系统中充分发挥硬件性能。提出一种高效的对象存储Hummer改善基于闪存分布式文件系统的写入性能。对于数据写入,通过一种细粒度的I/O管理,降低了多层次的软件开销;对于元数据更新,使用键值数据库和更细粒度的元数据单元使其更适合NVMe的访问。测试结果表明,相对于当前的BlueStore对象存储设备,Hummer能够在单个节点下能够提供2.75倍以上的带宽。在5个节点的分布式环境下,能够发挥闪存66%以上的性能,比目前性能最好的Lustre文件系统提高了30%。NVMe-based high-speed flash memory cannot fully exploit hardware performance in distributed file systems due to multi-level abstraction and semantic limitations.This paper proposes an efficient object storage Hummer to improve the write performance of a flash-based distributed file system.For data writes,multi-level software overhead is reduced through a fine-grained I/O management;for metadata updates,key-value databases and finer-grained metadata units are used to make them more suitable for NVMe access.Test results show that Hummer can provide more than 2.75 times the bandwidth of a single node compared to the current BlueStore object storage device.In a distributed environment of 5 nodes,it can achieve more than 66%performance of flash memory,which is 30%higher than the best performance Lustre file system.

关 键 词：对象存储 高速闪存 分布式文件系统 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]