使用FileChannel与NIO.2同步目录 [英] Using FileChannel to fsync a directory with NIO.2

问题描述

我刚刚发现，使用NIO.2，至少在Linux下，我可以在一个目录上打开一个 FileChannel ，然后调用 force（true）来电基础文件描述符上的fsync（）。无需考虑是否需要 ，这很好最终在纯Java中提供此功能。

I just discovered that with NIO.2, at least under Linux, I can open a FileChannel on a directory, and calling force(true) calls fsync() on the underlying file descriptor. Without getting into whether this should be necessary, it's nice to finally have this functionality available in pure Java.

但是，我无法找到记录此行为的任何地方。我可以指望在所有Unix平台，未来版本的Java和非Oracle JVM中工作吗？

I haven't been able to find anywhere that this behaviour is documented, though. Can I count on this working on all Unix platforms, in future versions of Java, and in non-Oracle JVMs?

推荐答案

参见以下主题： http://mail.openjdk.java .net / pipermail / nio-dev / 2015-May / 003140.html

它在技术上不受支持，但看起来支持将保留尽可能多应用程序依赖它。

It was not technically supported, but looks like support will be retained as many applications rely on it.

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