使用软装入，如果出现了错误，那么将立即对请求的程序进行报告；而对于硬装入，NFS将不断地进行重试。

With a soft mount, if there is an error, it is reported immediately to the requested program, while with a hard mount, NFS keeps retrying.

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用户可能选择重试或者退出应用程序。

The user may choose to re-try or exit the application.

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如果应用程序在更新时看到该值已经更改，则不会进行更新，并通知用户需要重试其操作。

If the application, at update time, sees that this value has been modified, then the update cannot take place, and the user is informed that he or she must try again.

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