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批量删除 LUN 后系统性能下降

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ontap-9
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适用于

  • NetApp AFF-A300
  • ONTAP 9.13.1P9 (集群模式)
  • iSCSI 协议环境
  • 经历大规模 LUN 删除和高聚合利用率的系统

问题描述

  • 删除了大量 LUN(约 106TB,约占聚合的 40%),导致:
    • 高 CPU 利用率(后台删除工作负载飙升至 30%)
    • WAFL_CP(一致性点)工作负载提升至约 50%
    • 客户端工作负载的大规模延迟(WAFLSuspOther 延迟达数百秒)
    • 许多实例的卷访问超时和失败
  • EMS 日志示例:
    Mon Dec 01 1:00:00+0000 [Node01:VdomAsyncTh_03:LUN.destroy:notice]: LUN /vol/vol_01/volume-d7s8d9s0-d8s7-7744-7283-875b7b6b9b5b destroyed (UUID:d7s8d9s0-d8s7-7744-7283-875b7b6b9b5b).
  • 业务影响:受影响的客户端无法访问写入/读取卷。

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