• Newer journaling file systems simplify the disk-check process when the system starts up again.

    比较新的日志文件系统简化系统重新启动磁盘检查过程

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  • Journaling file systems provide reliability and protect against corruption in the face of system crash or power loss.

    日志文件系统系统崩溃断电提供了可靠性防止系统崩溃

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  • The default method for journaling is ordered and supports online resizing to grow the file system.

    默认日志记录方法预定支持在线调整大小的方式扩展文件系统

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  • To sum up, journaling file systems are fault-resilient file systems that use a journal to log changes before they're committed to the file system to avoid metadata corruption (see Figure 1).

    总之日志文件系统就是一种具有故障恢复能力的文件系统,它利用日志记录尚未提交文件系统修改防止元数据破坏(请参见图1)。

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  • Let's take a short walk through journaling file system history, and then review the file systems available and how they differ.

    下面就让我们一起简短回顾一下日志文件系统历史然后再看一看现行的几种文件系统看看它们之间有什么区别。

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  • Journaling file systems use a journal to buffer changes to the file system (which is also used in crash recovery) but can use different strategies for when and what is journaled.

    日志文件系统使用日志缓冲文件系统修改(同时也可以应用紧急故障恢复)的,可以根据记录的时间内容采取不同策略

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  • Journaling is the process of logging changes to the file system through a journal (which is a dedicated circular log on a contiguous region of the disk).

    日志记录就是通过日记(磁盘相邻区域专门循环记录)记录文件系统变更过程

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  • Reiser4 was designed from scratch as a new journaling file system with many advanced features.

    Reiser4设计成为全新日志文件系统,它拥有很多先进功能

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  • One of the primary disadvantages of ext3fs is that it was not designed from the ground up as a journaling file system.

    ext3fs主要弊端之一就是最初不是作为日志文件系统而设计

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  • Like ext3, ext4 is a journaling file system.

    ext3一样ext4也是一个日志文件系统

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  • The fourth extended journaling file system (ext4fs) is the evolution of ext3fs.

    第四扩展日志文件系统(fourth extended journaling file systemext4fs ext3fs演化而来。

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  • After successfully getting ReiserFS merged into the Linux kernel and adopted by many Linux distributions, Namesys (the company behind ReiserFS) began work on a new journaling file system.

    成功地ReiserFS合并Linux内核很多的Linux发行版采用之后,Namesys(开发ReiserFS公司)便开始致力于新的日志文件系统的开发。

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  • Ext3: The standard Linux file system with journaling added.

    ext3日志标准Linux文件系统

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  • ReiserFS is a journaling file system that was developed from the ground up with journaling in mind.

    ReiserFS是从开始就按照记录日志的意图而开发的日志文件系统

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  • The third extended file system (ext3fs) is the most popular journaling file system and is the evolution of the popular ext2 file system.

    第三扩展文件系统(third extended file system,ext3fs)流行的日志文件系统,是由ext2文件系统演化而来。

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  • XFS is one of the other early journaling file systems that was originally developed by Silicon Graphics for the IRIX operating system in 1995.

    XFSSilicon Graphicsis 1995 年 IRIX操作系统开发其他早期日志文件系统之一。

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  • The ext3 file system introduced the concept of journaling to improve the reliability of the file system when the system is abruptly halted.

    ext3文件系统引入日志概念系统突然停止提高文件系统可靠性

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  • Additionally, the crash recovery time for journaling file systems is dramatically reduced compared to more traditional file system methods (such as those that rely on FSCK).

    另外传统文件系统方法(比如那些依赖fsck系统)相比日志文件系统大大地缩短了系统崩溃恢复时间

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  • The most commonly used journaling file system, ext3fs (or third extended file system) is an extension of ext2 with journaling capabilities.

    常用日志文件系统ext3fsthirdextendedfile systemext2扩展,它增加了记录日志的功能

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  • ReiserFS was introduced in 2001 in the mainline 2.4 kernel (the first journaling file system to be adopted by Linux).

    ReiserFS于2001年引进主流2.4内核(Linux采用第一日志文件系统)。

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  • If you need to use a non-journaling file system for any volume, try to keep that volume as small as possible.

    如果对于任何需要使用日志文件系统,那么这个卷应该尽可能

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  • JFS2 supports ordered journaling for high performance with sub-second file system recovery.

    JFS2支持预定日志记录方式,可以提高较高性能实现亚秒级文件系统恢复。

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  • When a system using a traditional, non-journaling file system is improperly shut down, the operating system detects this and performs a consistency check using the FSCK utility.

    如果系统采用传统的未提供日志功能的文件系统,那么操作系统在检测到系统为非正常关机时,会使用fsck应用程序执行一致性检验

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  • This example shows ext3, but the Journaling flash File system version 2 (JFFS2) and SquashFS are also good choices, particularly for flash-based storage systems.

    这个示例使用ext3但是JournalingFlashFile Systemversion2 (JFFS2)SquashFS也是合适的选择尤其是对于基于闪存存储系统。

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  • This is done by using JFFS2 (Journaling Flash File System version 2), which compresses stored data; the 21,544 blocks of storage available hold roughly 60,000 blocks of files.

    通过使用JFFS2JournalingFlashFile Systemversion2)实现的,会对所存储数据进行压缩 21,544 个存储可以容纳大约 60,000 个文件块。

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  • This is done by using JFFS2 (Journaling Flash File System version 2), which compresses stored data; the 21,544 blocks of storage available hold roughly 60,000 blocks of files.

    通过使用JFFS2JournalingFlashFile Systemversion2)实现的,会对所存储数据进行压缩 21,544 个存储可以容纳大约 60,000 个文件块。

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