HiSMRfs:用于带状存储阵列的高性能文件系统

2014 30th Symposium on Mass Storage Systems and Technologies (MSST) Pub Date : 2014-06-02 DOI:10.1109/MSST.2014.6855539

Chao Jin, Weiya Xi, Z. Ching, Feng Huo, Chun-Teck Lim

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引用次数: 53

摘要

HiSMRfs是一个具有标准POSIX接口的文件系统，适用于带状磁记录(SMR)驱动器。HiSMRfs可以管理原始SMR驱动器并支持随机写入，而无需在SMR驱动器内部实现重新映射层。为了实现高性能，HiSMRfs将数据存储和元数据存储分开，并进行不同的管理。元数据采用内存树结构进行管理，存储在高性能随机写区域(如SSD)中。数据写入通过顺序追加方式完成，并存储在SMR驱动器中。HiSMRfs包括一个用于SMR/HDD阵列的基于文件/对象的RAID模块。RAID模块对单个文件/对象进行奇偶校验，并保证数据和奇偶校验写入100%顺序和全分条。HiSMRfs也适用于传统hdd和ssd的混合存储系统。已经开发了两个带有HiSMRfs的原型系统。并与SMRfs和Flashcache进行了性能测试和比较。实验结果表明，HiSMRfs系统比SMRfs系统性能提高25%，比Flashcache系统性能提高11%。

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HiSMRfs: A high performance file system for shingled storage array

HiSMRfs a file system with standard POSIX interface suitable for Shingled Magnetic Recording (SMR) drives, has been designed and developed. HiSMRfs can manage raw SMR drives and support random writes without remapping layer implemented inside SMR drives. To achieve high performance, HiSMRfs separates data and metadata storage, and manages them differently. Metadata is managed using in-memory tree structures and stored in a high performance random write area such as in a SSD. Data writing is done through sequential appending style and store in a SMR drive. HiSMRfs includes a file/object-based RAID module for SMR/HDD arrays. The RAID module computes parity for individual files/objects and guarantees that data and parity writing are 100% in sequential and in full stripe. HiSMRfs is also suitable for a hybrid storage system with conventional HDDs and SSDs. Two prototype systems with HiSMRfs have been developed. The performance has been tested and compared with SMRfs and Flashcache. The experimental tests show that HiSMRfs performs 25% better than SMRfs, and 11% better than Flashcache system.

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2014 30th Symposium on Mass Storage Systems and Technologies (MSST)

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