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限制 SCSI 设备的路径故障切换时间

Solution In Progress - Updated -

Issue

  • 存储错误会导致 SCSI 错误处理器(scsi_eh)线程在切换到其他可用路径前花费很长时间尝试恢复。

Environment

  • Red Hat Enterprise Linux 5.10.z 内核 kernel-2.6.18-371.6.1.el5 或更新版本
  • Red Hat Enterprise Linux 6.4.z 内核 kernel-2.6.32-358.32.3.el6 或更新版本
  • 多路径配置中的 SCSI 设备
  • 导致 IO 在外部存储上超时的存储错误
  • Red Hat Enterprise Linux 7

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