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arXiv 1007.0328cs.DC
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分布式存储系统中的自治管理

Autonomic Management in a Distributed Storage System

Markus Tauber

摘要:

本文研究了自治管理在分布式存储系统中的应用。在实验中测量了对性能和资源消耗的影响,这些实验是在局部区域测试台上进行的。这些实验是用一个特定的分布式存储系统的组件进行的,但试图适用于广泛的此类系统,特别是那些暴露于不同条件的系统。分布式存储系统的感知特性取决于其配置参数和各种动态条件。对于给定的一组条件,一个特定的配置可能比另一个更好的措施,如资源消耗和性能。在这里,配置参数值是动态设置的,并将结果与静态配置进行比较。假设在不变的条件下,这将允许系统收敛于比任何可以先验设置的配置都更合适的配置。此外,系统可以通过采用更合适的配置来对条件的变化做出反应。自治管理被应用于分布式存储系统ASA的对等(P2P)和数据检索组件。各种工作量和流失模式的影响进行了实验测量。管理政策和机制的实施使用一个通用的自主管理框架,在这项工作中开发。自主管理的实验评估显示出可喜的成果,并提出了几个未来的研究课题。本论文的研究结果可以利用在建立其他分布式存储系统,专注于利用用户工作站上的存储,因为这些是特别有可能暴露于变化,不可预测的条件。

英文摘要:

This thesis investigates the application of autonomic management to a distributed storage system. Effects on performance and resource consumption were measured in experiments, which were carried out in a local area test-bed. The experiments were conducted with components of one specific distributed storage system, but seek to be applicable to a wide range of such systems, in particular those exposed to varying conditions. The perceived characteristics of distributed storage systems depend on their configuration parameters and on various dynamic conditions. For a given set of conditions, one specific configuration may be better than another with respect to measures such as resource consumption and performance. Here, configuration parameter values were set dynamically and the results compared with a static configuration. It was hypothesised that under non-changing conditions this would allow the system to converge on a configuration that was more suitable than any that could be set a priori. Furthermore, the system could react to a change in conditions by adopting a more appropriate configuration. Autonomic management was applied to the peer-to-peer (P2P) and data retrieval components of ASA, a distributed storage system. The effects were measured experimentally for various workload and churn patterns. The management policies and mechanisms were implemented using a generic autonomic management framework developed during this work. The experimental evaluations of autonomic management show promising results, and suggest several future research topics. The findings of this thesis could be exploited in building other distributed storage systems that focus on harnessing storage on user workstations, since these are particularly likely to be exposed to varying, unpredictable conditions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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