由于启用了 Vscan ，客户端观察到高延迟 到过载的 Vscan 服务器

适用场景

• ONTAP 9.  
• CIFS
• Vscan

问题描述

• 启用Vscan后、客户端会观察到高延迟
  • 示例： 通常需要花费约为｛\f429｝｛\f429｝｛\f429｝｛\f429｝｛\f429｝｛\f429｝
• 在 Networkqos statistics volume latency show 不经常列中显示高延迟
  • 注意： 有时不会出现延迟、 必须对照检查 qos statistics volume performance show 才能查看机下延迟

Cluster1::> qos statistics volume latency show -volume vol1 -vserver svm1 Workload ID Latency Network Cluster Data Disk QoS NVRAM --------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- -total- - 5.52ms 4.41ms 15.00us 981.00us 113.00us 0ms 0ms vol1 10210 4.60s 4.59s 6.00us 91.00us 12.00us 0ms 0ms -total- - 85.00us 0ms 0ms 0ms 0ms 0ms 0ms vol1 10210 84.00us 0ms 0ms 0ms 0ms 0ms 0ms

• 错误可能如下所示：

 Wed Jul 06 00:20:15 EEST [cluster1-02: kernel: Nblade.vscanBadUserPrivAccess:error]: For Vserver "svm1", the attempt to connect to the privileged ONTAP_ADMIN$ share by the client "10.1.2.3" is rejected because its logged-in user "VSCAN-admin" is not configured in any of the Vserver active scanner pools. Wed Jul 06 00:20:16 EEST [cluster1-02: kernel: Nblade.vscanConnBackPressure:error]: For Vserver "svm1", AV server "10.1.2.3" is too busy to accept new scan requests.