这个问题之所以在XFS 1.0中更加频繁的发生，原因在于对某类元数据的更新必须按照其发生的顺序记录到文件系统中。
The problem manifested itself much more often with XFS 1.0 because certain kinds metadata updates were required to be recorded to the filesystem in the order that they occured.
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，它利用日志来记录尚未提交到文件系统的修改，以防止元数据破坏(请参见图1)。
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).
使用ReiserFS、XFS和JFS 时，文件系统驱动程序记录 元数据，但不提供 数据日志记录。
With ReiserFS, XFS, and JFS, the filesystem driver journals metadata, but makes no provisions for journaling data.
SparcSolaris7的第一个 64位版本增加了文件系统元数据日志记录支持。
The first 64-bit version of Sparc Solaris 7 would add support for file system metadata logging.
MasterDataRepository包含主数据(实例和定义)、MDM系统的元数据以及修改主数据的历史记录。
The master data Repository consists of master data, both instance and definition master data, metadata for the MDM System, and history data that records changes to master data.
现在，我们最后来了解一下ext3文件系统是如何高效地提供元数据和数据日志记录，以避免在本文前面部分所描述的数据毁坏问题的。
And now, we finally get to see how the ext3 filesystem effectively provides both metadata and data journaling, avoiding the data corruption problem I described earlier in this article.
象reiserfs一样，XFS使用逻辑日志；即，它不象ext3那样将文字文件系统块记录到日志，而是使用一种高效的磁盘格式来记录元数据的变动。
Like ReiserFS, XFS USES a logical journal; that is, it does not journal literal filesystem blocks like ext3, and instead USES an efficient on-disk format to log metadata changes.
使用 仅元数据日志记录，您的文件系统元数据将会异常稳固，因而可能永远不需要执行彻底 fsck。
With metadata-only journaling, your filesystem metadata is going to be rock solid, and you will probably never need to perform an exhaustive fsck.
文件管理元数据可以用来定义、鉴定和记录文件、活动及其生成、管理、维护和使用的过程与系统。
Recordkeeping metadata can be used to identify, authenticate and contextualise records and the people, processes and systems that create, manage, maintain and use them.
通过分析仿真引擎的系统体系结构，将仿真引擎视为一个特殊的邦元，并对其三个组成部分：仿真调度器、仿真控制器以及数据记录器进行分析、设计与实现。
By analyzing the architecture of simulation Engine, it was viewed as a special federate and composed of the three components: simulation scheduler, simulation controller and data recorder.
通过分析仿真引擎的系统体系结构，将仿真引擎视为一个特殊的邦元，并对其三个组成部分：仿真调度器、仿真控制器以及数据记录器进行分析、设计与实现。
By analyzing the architecture of simulation Engine, it was viewed as a special federate and composed of the three components: simulation scheduler, simulation controller and data recorder.
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