This article explores how this is done and investigates the major structures of the Linux file system layer.
本文讲解这个机制的实现方法并介绍Linux文件系统层的主要结构。
Now that you've seen file system construction in action, I'll get back to the architecture of the Linux file system layer.
既然已经看到了文件系统的构造方法，现在就看看Linux 文件系统层的体系结构。
Currently the main storage system technology is SAN Virtualization and its implementation is in the file system layer.
SAN的虚拟化是存储系统的发展趋势，它在文件系统层实现。
To illustrate the capabilities of the Linux file system layer (and the use of mount), create a file system in a file within the current file system.
为了说明Linux文件系统层的功能（以及挂装的方法），我们在当前文件系统的一个文件中创建一个文件系统。
The logical file system layer is the level of abstraction at which users can request the various file operations, such as read, write, stat, and so on.
逻辑文件系统层是一个抽象层，用户可以通过它请求各种文件操作，如读、写、获得相关信息，等等。
Below the file system layer is the buffer cache, which provides a common set of functions to the file system layer (independent of any particular file system).
文件系统层之下是缓冲区缓存，它为文件系统层提供了一个通用函数集(与具体文件系统无关)。
From a storage perspective, Ceph object storage devices perform the mapping of objects to blocks (a task traditionally done at the file system layer in the client).
从存储角度来看，Ceph对象存储设备执行从对象到块的映射(在客户端的文件系统层中常常执行的任务)。
A solution to this dilemma, adopted in more than one emulator, is to set up an extra layer of interpretation for file system calls.
许多模拟器解决这个难题所采取的一个方案是：建立一个针对文件系统调用的额外的解释层。
The VFS provides the abstraction layer, separating the POSIX API from the details of how a particular file system implements that behavior.
VFS提供抽象层，从而将POSIXAPI 与特定文件系统如何实现该行为的细节分离开来。
The virtual file system (VFS) is the abstraction layer for the multitude of file systems that are supported in the kernel.
而虚拟文件系统（VFS)是内核中支持的大多数文件系统的抽象层。
Each file system provides its own inode methods, which implement the operations and provide the common abstraction to the VFS layer.
每个文件系统提供自己的inode方法，这些方法实现操作并向vfs层提供通用的抽象。
Thus, the VFS layer makes it possible for Linux users to add new file system support without worrying too much about the way in which Linux manages memory.
因此，VFS层使Linux用户可以添加新的文件系统支持而不必过于担心 Linux管理存储器的方式。
The Linux block layer component of this is called a discard request, which results from a higher-level file system file deletion.
Linux的这个块层组件称为丢弃请求，它来自于更高级别的文件系统的文件删除。
At the bottom of the VFS are the file system abstractions that define how the upper-layer functions are implemented.
在VFS下面是文件系统抽象，它定义了上层函数的实现方式。
File encryption: the operating system file driver layer will be stored in the database file encrypted after storage on the disk.
文件加密：在操作系统文件驱动层将数据库的存储文件经过加密后存储到磁盘上。
This system provides a support of presentation layer to the data file abstract syntax notation and the data grammatical conversion in order to achieve one's object of the sharing of data files.
该系统提供了表示层对数据文件抽象语法表示的支持及数据语法的转换，从而达到了数据文件共享的目的。
In fact, since this file system is a "copy on write" file system, it knows exactly what the new files are, so it can efficiently package just the parts you added into an "image" layer.
事实上，因为这个文件系统是一个“写时复制”文件系统，它知道新的文件是什么，所以它可以有效的包只是部分你添加到“图像”层。
A system and method for providing an enhanced layer of security to protect the file system from malicious programs are provided.
提供用于提供使文件系统免于恶意程序的增强安全层的系统和方法。
A system and method for providing an enhanced layer of security to protect the file system from malicious programs are provided.
提供用于提供使文件系统免于恶意程序的增强安全层的系统和方法。
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