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如果vscan服务器响应错误、则会导致卷延迟较长

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ontap-9
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适用场景

ONTAP 9

问题描述

  • 由于vscan服务器响应不良、读/写延迟较长。
  • scan_request_timedout 可通过执行以下步骤来查看。
  • ASUP ->    通过高级模式执行VSCAN-EVENTS.XMLvserver vscan show-events 命令可能会报告:
    • scan-internal-error
    • scanner-busy
    • scan-timedout
  • ASUP -> VSCAN-CONNECTION-STATUS-ALL.XML 可能会报告  在CIFS Vserver上配置的vscan服务器为disconnected
  • 运行以下命令开始收集统计信息、然后重现Slowing问题描述:

cluster1::> set -privilege diag
cluster1::*> statistics start -object offbox_vscan_server -sample-id vscan_test1

  • 复制问题描述后停止统计信息:

cluster1::*> statistics stop -object offbox_vscan_server -sample-id vscan_test1

  • 要查看统计信息,请使用下面的命令检查已发送的请求总数和timedout 请求数。以下示例显示了 由于Vserver响应错误而发出的所有11个请求均为timedout

cluster1::*> statistics samples show -sample-id vscan_test1
Object: offbox_vscan_server
Instance: cluster_name:<node IP>:Node_name
Start-time: 3/6/2024 12:09:18
End-time: 3/6/2024 12:15:59
Elapsed-time: 401s
Scope: scope_name
Number of Constituents: 1 (complete_aggregation)
   Counter                            Value
   -------------------------------- --------------------------------
   scan_request_dispatched                     11
   scan_request_dispatched_rate                   0
   scan_request_pending                       1
   scan_request_requeued                       0
   scan_request_timedout                      11

 

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