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AV コネクタの入力キューがフルに近づいているため、オンデマンド Vscan の実行後に CIFS アクセスのレイテンシが高くなります

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77
Visibility:
Public
Votes:
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Category:
ontap-9
Specialty:
cifs
Last Updated:

環境

  • ONTAP 9
  • ONTAP Antivirus Connector ( AV コネクタ) 1.0.4
  • Trend Micro ServerProtect for Storage 6.0 Build 1119

問題

  • オンデマンド vscan の実行後、 CIFS アクセスが遅すぎる。
  • このメッセージは、CIFS処理が40秒以内に完全に処理されなかったためにタイムアウトした場合に表示されます。

Tue Dec 08 11:23:26 CET [Node-01: kernel: Nblade_CifsOperationTimedOut_1:error]: params: {'remoteBladeID': 'xxx-xxxxxxxxxxxx (Node-02)', 'cmdRestartCnt': '0', 'vserverId': '5', 'commandName': 'SMB2_COM_CREATE', 'isQosEnabled': 'QoS_disabled', 'lastSpinNpError': 'SPINNP_ERR_OFFBOX_VSCAN_REQD', 'localIpAddress': '1.1.1.1', 'lastCsmError': 'CSM_OK', 'clientIpAddress': '10.10.10.20', 'suspensionCnt': '6', 'dsId': '0'}

  • AV コネクタキュー:scanner_stats_pct_input_queue_avg オンデマンドの Vscan が停止して Vscan ワークロードが減少しても高い使用率( 90% 以上)を維持しています。

例:

:*> statistics show-periodic -interval 10 -object offbox_vscan_server -counter scanner_stats_pct_input_queue_avg|scan_request_timedout|scan_request_pending|scan_request_dispatched|scanner_stats_is_queue_full -instance svm01:xx.xx.xx.xx:sr-2650-04-01
sr-2650-04: offbox_vscan_server.svm01:10.xx.xx.xx:sr-2650-04-01: 6/3/2021 23:26:12
    scan    scan    scan scanner_stats_is scanner_stats_pct_input
   request  request  request       queue          queue  Complete   Number of
 dispatched  pending timedout        full           avg Aggregation Constituents
 ---------- -------- -------- ---------------- ----------------------- ----------- ------------
     58    500     3         0            97   Yes    1
     53    500     0         0            98   Yes    1
     54    500     0         0            98   Yes    1
     64    500     0         0            98   Yes    1
     55    500     0         0            98   Yes    1
     56    500     0         0            98   Yes    1
     63    500     0         0            98   Yes    1
     55    498     2         0            98   Yes    1
     60    500     2         0            98   Yes    1
     91    270    261         0            98   Yes    1
     56    220     50         0            98   Yes    1
     59    220     0         0            98   Yes    1

 

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