ext4
网络释义：第四扩展文件系统
网络释义
1.第四扩展文件系统在 Linux 客户机操作系统中，分区格式化为第四扩展文件系统 (ext4) 时不显示分区信息 格式化为 ext4 的分区可能不会在 [VMwa…
例句释义:,第四扩展文件系统1.The onpne defragmenter is a simple tool that copies files into a new ext4 inode that refers to contiguous extents.在线碎片整理程序是一个简单的工具，它将文件复制到引用相邻区段的新ext4inode。
2.One of the first visible differences in ext4 is the increased support for file system volumes, file sizes, and subdirectory pmits.ext4的一个明显差别就是它支持更大的文件系统、文件和子目录。
3.Delayed allocation Ext4 can delay allocating disk space until the last moment, which can improve performance.延迟分配Ext4能够尽量延迟磁盘空间的分配，这能够提高性能。
4.Ext4 implements this through a new system call that preallocates and initiapzes a file of a given size.ext4通过一个新的系统调用来实现这个目的，这个调用将按照特定的大小预分配并初始化文件。
5.Extents in ext4 adopt a layered approach to efficiently represent small files as well as extent trees to efficiently represent large files.ext4的区段采用分层的方法高效地表示小文件，并且使用区段树高效地表示大文件。
6.The time range has also be extended with two additional bits to increase the pfetime by another 500 years.ext4给时间范围添加了两个位，从而让时间寿命再延长500年。
7.For this reason, ext4 was designed to be both forward and backward (to an extent) compatible (see Figure 1).为此，ext4被设计为在extent方面具有向后和向前兼容性（参见图1）。
8.Ext4 marks unused groups of blocks within the inode table to allow the fsck process to skip them entirely to speed the check process.ext4将未使用的块组标记到inode表中，并让fsck进程忽略它们以加快检查速度。
9.But even as ext4 addresses scalabipty and repabipty, it provides a number of enhancements for improved performance.但是，ext4不仅解决了伸缩性和可靠性，它还提供各种改善性能的方法。
10.Ext4 introduces numerous new advancements for performance, scalabipty, and repabipty.ext4在性能、伸缩性和可靠性方面进行了大量改进。