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BYP (磁盘旁路)代码是什么意思?

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适用场景

Data ONTAP 7 及更早版本

问题解答

什么是驱动器旁路事件?

FCAL LINK_STATS报告BYP状态。

示例:

localhost> fcstat device_map

Loop Map for channel 4a:

Translated Map: Port Count 28

7 29 27 26 25 24 23 22 21 20 19 18 17 16 45 44

43 42 41 40 39 38 37 36 35 34 33 32

Shelf mapping:

Shelf 1: 29BYP 27 26 25 24 23 22 21 20 19 18 17 16

Shelf 2: 45 44 43 42 41 40 39 38 37 36 35 34 33 32

这意味着已绕过磁盘ID 28。

驱动器绕过事件是指 通过发生原因使ESH绕过驱动器端口从而使主机无法访问该端口并将该驱动器与环路隔离的情况。驱动器旁路事件主要有两种:

  • 阈值绕过—ESH检测到在特定时间段内发生某种错误、并确定 由于一段时间内累积的错误或流经环路的数据量过大而绕过端口的情况。
  • 策略绕过—ESH检测到严重问题并绕过驱动器以保持环路完整性的情况。这可能是一个稍后会清除的"情境"问题、但一旦绕过某个驱动器、该驱动器将一直被绕过、直到通过卸下并重新拔插该驱动器或关闭并重新启动磁盘架来手动清除为止。
  • 自我绕过-硬盘驱动器电子元件确定内部电路无法再正常工作。因此、驱动器本身会调用从环路中删除。

注: ESH端口也可能显示绕过。这通常意味着环路具有问题描述、缆线或SFP。速度不匹配也可能会绕过ESH端口。

有关磁盘旁路代码的详细信息,请参阅以下文档: 监控LRC、ESH、ESH2或ESH4模块

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