【摘要】 设备复制系统采用数据复制技术实现数据容灾,而日志机制是整个系统的核心和基础。本文在分析借鉴文件系统和数据库系统日志的基础上,提出了一个满足设备复制系统特点和设计要求的日志机制,并重点围绕日志的组织结构、生成方式、访问方式以及溢出、修正等特殊情况的处理方法进行了论述。原型实验表明,该日志机制在设备复制系统得到了较好实现,为数据复制提供了保障。更多还原

【Abstract】 Device Replication System(DRS) adopts the Replication technology to realize Disaster Recovery.Among all the components of DRS,Journal Mechanism is the core and foundation.Based on analyzing the Journal Mechanism of File System and Database System,this paper presents a new journal mechanism for DRS.Firstly,the characters of DRS are introduced,and then the requirements and principles to design the Journal Mechanism are described the organization of the Journal and the approach to create the Journal and deal with Journal Overflow is discussed in the second section.Thirdly,this paper stresses how to access and revise the Journal.It’s proved by prototype experiments that the Journal Mechanism is realized well in DRS,which ensures data replication.更多还原