RAIF: Redundant Array of Independent Filesystems

24th IEEE Conference on Mass Storage Systems and Technologies (MSST 2007) Pub Date : 2007-09-24 DOI:10.1109/MSST.2007.30

N. Joukov, A. Krishnakumar, Chaitanya Patti, A. Rai, Sunil Satnur, Avishay Traeger, E. Zadok

{"title":"RAIF: Redundant Array of Independent Filesystems","authors":"N. Joukov, A. Krishnakumar, Chaitanya Patti, A. Rai, Sunil Satnur, Avishay Traeger, E. Zadok","doi":"10.1109/MSST.2007.30","DOIUrl":null,"url":null,"abstract":"Storage virtualization and data management are well known problems for individual users as well as large organizations. Existing storage-virtualization systems either do not support a complete set of possible storage types, do not provide flexible data-placement policies, or do not support per-file conversion (e.g., encryption). This results in suboptimal utilization of resources, inconvenience, low reliability, and poor performance. We have designed a stackable file system called redundant array of independent filesystems (RAIF). It combines the data survivability and performance benefits of traditional RAID with the flexibility of composition and ease of development of stackable file systems. RAIF can be mounted on top of directories and thus on top of any combination of network, distributed, disk-based, and memory-based file systems. Individual files can be replicated, striped, or stored with erasure-correction coding on any subset of the underlying file systems. RAIF has similar performance to RAID. In configurations with parity, RAIF's write performance is better than the performance of driver-level and even entry-level hardware RAID systems. This is because RAIF has better control over the data and parity caching.","PeriodicalId":109619,"journal":{"name":"24th IEEE Conference on Mass Storage Systems and Technologies (MSST 2007)","volume":"10 2","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2007-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"49","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"24th IEEE Conference on Mass Storage Systems and Technologies (MSST 2007)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/MSST.2007.30","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 49

Abstract

Storage virtualization and data management are well known problems for individual users as well as large organizations. Existing storage-virtualization systems either do not support a complete set of possible storage types, do not provide flexible data-placement policies, or do not support per-file conversion (e.g., encryption). This results in suboptimal utilization of resources, inconvenience, low reliability, and poor performance. We have designed a stackable file system called redundant array of independent filesystems (RAIF). It combines the data survivability and performance benefits of traditional RAID with the flexibility of composition and ease of development of stackable file systems. RAIF can be mounted on top of directories and thus on top of any combination of network, distributed, disk-based, and memory-based file systems. Individual files can be replicated, striped, or stored with erasure-correction coding on any subset of the underlying file systems. RAIF has similar performance to RAID. In configurations with parity, RAIF's write performance is better than the performance of driver-level and even entry-level hardware RAID systems. This is because RAIF has better control over the data and parity caching.

查看原文本刊更多论文

RAIF:独立文件系统冗余阵列

存储虚拟化和数据管理对于个人用户和大型组织来说都是众所周知的问题。现有的存储虚拟化系统要么不支持一整套可能的存储类型，要么不提供灵活的数据放置策略，要么不支持每个文件的转换(例如，加密)。这将导致资源利用率不佳、不方便、可靠性低和性能差。我们设计了一个可堆叠的文件系统，称为独立文件系统冗余阵列(RAIF)。它将传统RAID的数据生存性和性能优势与组合的灵活性和可堆叠文件系统的易于开发相结合。RAIF可以挂载在目录之上，因此也可以挂载在网络、分布式、基于磁盘和基于内存的文件系统的任何组合之上。可以在底层文件系统的任何子集上复制、分割或使用擦除校正编码存储单个文件。RAIF具有与RAID相似的性能。在奇偶校验配置中，RAIF的写性能优于驱动级甚至入门级硬件RAID系统的性能。这是因为RAIF对数据和奇偶校验缓存有更好的控制。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

24th IEEE Conference on Mass Storage Systems and Technologies (MSST 2007)

自引率

0.00%

发文量