逻辑文件 meaning in English
logic file
logical file
Examples
- Currently , four virtual log files are in use by the logical log . the logical log starts at the front of the first virtual log file and ends at virtual log 4
逻辑日志从第一个虚拟日志的前端开始，而且从未使用过虚拟日志4中超过逻辑文件末端的部分。 - There are three layers in deltafile , virtual file system 、 logic file system and buffer cache . besides , deltafile provides the posix api interface
为了对用户透明的实现多种不同文件系统支持的功能, deltafile中采用了虚拟文件系统和逻辑文件系统相分离的体系结构。 - For example , the ratio of external inputs , external output , external inquiry , internal logical file , and external interface file can be compared with other applications meeting similar business needs
举个例子，外部输入、外部输出、外部查询、部逻辑文件，和外部借口文件的比率是可以和其他相近商业目的的应用进行类比。 - The implementation of deltafile 3 . 0 can be divided into two modules ? real - time file system module and manage module for both facilities and drives . the real - time file system contains four parts ? system call api layer , file node manage layer , virtual file system layer , concrete file system layer , which perform the abstraction of the facility
实时文件系统模块包含系统调用api层、文件节点管理层、虚拟文件系统层、具体逻辑文件系统层四部分,主要完成与设备无关的数据存取接口抽象和各种文件系统标准的实现;设备与驱动管理模块包含逻辑设备管理层、物理设备管理层、设备缓冲区高速缓存层、设备驱动管理层四部分,主要完成外部存储设备管理及其驱动接口抽象功能。 - First it supports the system call interfaces complied with the posix standard , which make convenience to the porting process to delta os for applications . second , delta file 3 . 0 offers the entire supports to the fat logic file system format , and make it suitable in multitasks environment through technique process . once more , delta file 3 . 0 support the flexible virtual file system interface and drive manage interface to make update easier
首先,其系统调用接口遵循posix规范,以便于应用向deltaos进行移植;其次, deltafile3 . 0提供了对fat全系列逻辑文件系统格式(含fat12 、 fat16 、 fat32 )的完全支持,并通过改造将fat这种源于单任务操作系统dos的文件系统标准应用于多任务环境;此外, deltafile3 . 0提供了灵活的虚拟文件系统接口和设备驱动管理接口,便于未来的升级和扩展。