中文摘要：

提出了一种基于FreeBSD平台的远程逻辑卷复制系统的设计方案,论述了它的系统结构以及实现方法。该系统以Vinum逻辑卷管理器为对象添加复制机制,不依赖于具体的存储设备,能实现数据块级的复制。系统提供了独特的日志机制和日志保护技术,支持同步、异步两种复制模式,可以适合不同的网络环境。它的传输协议基于TCP/IP,并能结合成熟的压缩技术,减轻网络负载。该系统提供了一种经济、通用的复制方案,能广泛推广应用。

英文摘要：

This paper presented the design of remote logical replication system based on FreeBSD,discussed its architecture and implementation method.The method added replication mechanism objected by Vinum logical volume manager,which could achieve replication on data block level while maintain independence on specific storage device.The system provided unique log mechanism and log protection,and supported synchronous,asynchronous replication strategies.Its transport protocol could be compatible with TCP/IP,and unite...