JFS: IBM's journaled file system.
jfs：IBM的日志文件系统。
Reiserfs: Another popular journaled file system.
reiserfs：另一个流行的日志文件系统。
Recall that a journaled file system keeps a log (journal) of the file operations.
日志式文件系统通常维护一份关于文件操作的日志。
However, also notice that there is no JFS (journaled file system) jfs2log entry.
但还要注意的是，其中没有jfs (journaled file system)jfs2log条目。
Journaled file system: Many file systems provide journaling to prevent loss of data.
日志文件系统：许多文件系统都提供日志以防止数据丢失。
Journaled file system: Many file systems provide journaling to prevent loss of data.
日志文件系统：许多文件系统都提供日志以防止数据丢失。
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