在故障路径上的I/O请求失败后，由驱动程序在正常路径上重新执行。
The SPD driver routes all failed I/O requests on the failed path through survival paths.
该模型基于时序推理思想，给出了考虑时序性的故障路径搜索策略，从而使模型具有时序特征。
Based on temporal reasoning thought, the model proposed fault path search strategy considering time sequence, which enabled the model to have temporal characteristic.
提供消息路径中导致故障发生的罪魁祸首的信息。
Provides information about the actor in the message path that caused the fault to happen.
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