The Andrew File System on OS/2 and SNA

Proceedings of TRICOMM `91: IEEE Conference on Communications Software: Communications for Distributed Applications and Systems Pub Date : 1991-04-18 DOI:10.1109/TRICOM.1991.152888

E. Williams, N. G. Sullivan, J. Rusnak, J. Menges, D. Ogle, R. Floyd, W. Chung

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引用次数: 6

Abstract

Porting a distributed application from one environment to another can be significant, particularly when performance is an important consideration. The Andrew File System (AFS) is a distributed file system designed to be heterogeneous and scalable, and it runs efficiently on variations of Unix. A port of AFS to Operating system/2 (OS/2) encountered an assortment of problems at various levels. The port, performed as a sequence of two ports, first investigated feasibility and performance issues and then integrated AFS into the OS/2 environment. Additionally, the migration from the original AFS network protocol, user datagram protocol internet protocol (UDP/IP), to systems network architecture (SNA) posed challenges, not the least of which was the change from a connectionless to a connection-oriented protocol. OS/2 and SNA demonstrated their viability as platforms for distributed applications by providing competent support for this performance-critical software, but substantial modifications to the AFS structure were necessary to achieve an efficient OS/2 implementation that preserved the AFS file system interface and semantics.<>

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OS/2和SNA上的Andrew文件系统

将一个分布式应用程序从一个环境移植到另一个环境可能非常重要，特别是当性能是一个重要的考虑因素时。Andrew文件系统(AFS)是一种分布式文件系统，设计为异构和可伸缩的，它在各种Unix上有效地运行。AFS移植到操作系统/2 (OS/2)遇到了各种各样的问题。该端口作为两个端口的序列执行，首先调查可行性和性能问题，然后将AFS集成到OS/2环境中。此外，从原始的AFS网络协议、用户数据报协议internet协议(UDP/IP)到系统网络体系结构(SNA)的迁移带来了挑战，其中最重要的挑战是从无连接到面向连接的协议的变化。OS/2和SNA通过为这种性能关键型软件提供有力的支持，证明了它们作为分布式应用程序平台的可行性，但为了实现有效的OS/2实现，保留AFS文件系统接口和语义，必须对AFS结构进行实质性修改。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of TRICOMM `91: IEEE Conference on Communications Software: Communications for Distributed Applications and Systems

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