标题： 通过网格中间件的模拟器实现对象存储 显示英文标题

标题： Enabling Object Storage via shims for Grid Middleware

摘要： 对象存储模型迅速成为大多数商业成功的大规模存储基础设施的基础，支持所谓的“云”存储，如Amazon S3，同时也构成了大多数并行分布式存储系统的实现基础。 对象存储设计中的许多假设与网格存储元素（Grid Storage Elements）设计中的概念相似，但不完全相同，尽管在SE之上需要“类似POSIX”的文件系统结构，使得差异显得更大。 由于现代对象存储提供了大多数网格SE不具备的许多功能（如块级条带化、并行访问、自动文件修复等），因此研究如何通过插件和适配器为网格工具提供对典型对象存储的接口，以及实验如何适应它们的数据模型，具有重要意义。 我们介绍了对Xrootd-Ceph接口的评估以及首次部署经验，作为GridPP\cite{GridPP}在RAL开展的一项倡议的一部分。 此外，我们还讨论了在格拉斯哥开发针对当前流行的{\it Ceph}并行分布式文件系统的插件所涉及的权衡和经验。 显示英文摘要

摘要： The Object Store model has quickly become the basis of most commercially successful mass storage infrastructure, backing so-called "Cloud" storage such as Amazon S3, but also underlying the implementation of most parallel distributed storage systems. Many of the assumptions in Object Store design are similar, but not identical, to concepts in the design of Grid Storage Elements, although the requirement for "POSIX-like" filesystem structures on top of SEs makes the disjunction seem larger. As modern Object Stores provide many features that most Grid SEs do not (block level striping, parallel access, automatic file repair, etc.), it is of interest to see how easily we can provide interfaces to typical Object Stores via plugins and shims for Grid tools, and how well experiments can adapt their data models to them. We present evaluation of, and first-deployment experiences with, (for example) Xrootd-Ceph interfaces for direct object-store access, as part of an initiative within GridPP\cite{GridPP} hosted at RAL. Additionally, we discuss the tradeoffs and experience of developing plugins for the currently-popular {\it Ceph} parallel distributed filesystem for the GFAL2 access layer, at Glasgow.