It also provides a method to define a set of hard and soft disk block and file allocation limits and the grace periods before the soft limit becomes enforced as the hard limit.

它还提供了一种方法来定义一组磁盘块和文件分配的硬、软限制，以及软限制强制实施为硬限制前的过渡期。

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When a user crosses the soft limit, he may get warned and after some grace period, as configured, the soft limit will be enforced as a hard limit.

当用户达到软限制时，会向他发出警告；在经过配置的过渡期之后，软限制将成为硬限制。

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