什么是“MVFS文件系统”的本质？用ClearCase？ [英] What is the nature of a "MVFS filesystem" with ClearCase?

问题描述

MVC（多版本文件系统）没有那么多创建一个清晰的服务器MVFS是什么？

一个文件系统，但给你一个访问权。

M：（在Windows上）或 / view （在Unix上）是一个挂载点，允许浏览你挂载的任何Vob（ClearCase存储库）的内容（就像传统的网络挂载，但由ClearCase制作）。 >

创建动态视图时，您将使用MVFS浏览动态文件系统，这意味着您要加载硬盘上的任何文件：您将远程查看您拥有的任何版本通过视图的配置规范选择。

请参阅：

MultiVersion文件系统（MVFS） ）创建专门用于在Rational Cl中访问数据的虚拟文件系统earCase VOB。

MVFS的工作方式与UNIX®网络文件系统（NFS）类似，因为它加载了一个内核驱动程序，该驱动程序通过一个标准向用户呈现文件系统接口在Windows，UNIX或Linux内核中。

注释：

• 快照视图不会使用MVFS（请参阅
  
• 通过动态视图，您可以直接浏览任何你想要的版本，使用 一个href =https://stackoverflow.com/questions/5662006/rm-doe snt-detect-failure-of-fchdir-in-walkfs> rm没有检测到ffsdir在fsdir中的失败，通过Unix rm 或Windows del 。只有cleartool命令才能在动态视图中修改由ClearCase管理的元素。

What does MVFS in a clearcase server?

解决方案

MVFS (Multi-Version Filesystem) don't so much "create" a filesystem, but give you access to one.

M: (on Windows) or /view (on Unix) is a mounting point allowing to browse the content of any Vob (the ClearCase repositories) you mount (like a classic network mount, but made by ClearCase).

When you create a dynamic view, you will use MVFS to browse the "dynamic" filesystem, meaning you want load any file on your hard disk: you will remotely see any version you have selected through the config spec of the view.

See About the MultiVersion File System (MVFS):

The MultiVersion File System (MVFS) creates a virtual file system specifically designed for accessing data within a Rational ClearCase VOB.

The MVFS works similarly to UNIX® Network File System (NFS), in that it loads a kernel driver that presents a file system to the user through a standard interface within the Windows, UNIX or Linux kernel.

Notes:

• a snapshot view won't use MVFS (see "What are the differences between a snapshot view and a dynamic view?")
• With a dynamic view, you can directly browse any version you want, using extended pathnames.
• Any read/write operation is done through cleartool and ClearCase: you cannot, as you tried in your previous question "rm doesn't detect failure of fchdir in walkfs", to rm elements through a Unix rm or Windows del. Only cleartool command can modify an element managed by ClearCase in a dynamic view.

这篇关于什么是“MVFS文件系统”的本质？用ClearCase？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！