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在 NetApp AFF-A400 上出现高延迟和间歇性多路径路径丢失

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ontap-9
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perf
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适用于

  • NetApp AFF-A400
  • ONTAP 9.13.1P6
  • iSCSI SAN 环境
  • 使用多路径和 Pacemaker A-S 配置的 Linux 裸机主机

问题

  • 特定主机上间歇性多路径路径丢失和高磁盘等待时间

  • 多路径日志显示路径故障和恢复:

    Host1 multipathd[971]: 3600a098038314b646f2455514f435474: sdg - tur checker timed outHost1 kernel: device-mapper: multipath: 253:18: Failing path 8:96.Host1 pacemaker-controld[15153]: notice: High CPU load detected: 36.180000
  • ONTAP 性能指标显示高延迟,尤其是在"suspend other"类别中:

    WAFL_SPINNP_WRITE-VOLUME_FENCED 109939242.50VOL_GET_WAFL_STATS-VOLUME_FENCED 102011041.50
  • 相应时间的 EMS 日志显示多个wafl.vol.snap_create.done事件:

    [Filer1:wafl_exempt11:wafl.vol.snap_create.done:info]: params:{'vol':'...','run_time':'1144'}

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