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Failure-Atomic File Access in the Slice Interposed Network Storage System

机译:Slice插入式网络存储系统中的故障原子文件访问

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This paper presents a recovery protocol for block I/O operations in Slice, a storage system architecture for high-speed LANs incorporating network-attached block storage. The goal of the Slice architecture is to provide a network file service with scalable bandwidth and capacity while preserving compatibility with off-the-shelf clients and file server appliances. The Slice prototype virtualizes the Network File System (NFS) protocol by interposing a request switching filter at the client's interface to the network storage system. The distributed Slice architecture separates functions typically combined in central file servers, introducing new challenges for failure atomicity. This paper presents a protocol for atomic file operations and recovery in the Slice architecture, and related support for reliable file storage using mirrored striping. Experimental results from the Slice prototype show that the protocol has low cost in the common case, allowing the system to deliver client file access bandwidths approaching gigabit-per-second network speeds.
机译:本文提出了Slice中块I / O操作的恢复协议,Slice是结合了网络附加块存储的高速LAN存储系统体系结构。 Slice架构的目标是提供具有可扩展带宽和容量的网络文件服务,同时保持与现成客户端和文件服务器设备的兼容性。 Slice原型通过在客户端接口到网络存储系统的接口之间插入请求切换过滤器来虚拟化网络文件系统(NFS)协议。分布式Slice架构将通常组合在中央文件服务器中的功能分开,从而为故障原子性带来了新的挑战。本文介绍了Slice架构中用于原子文件操作和恢复的协议,以及使用镜像条带对可靠文件存储的相关支持。 Slice原型的实验结果表明,该协议在通常情况下具有较低的成本,从而使系统能够提供接近每秒千兆位网络速度的客户端文件访问带宽。

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