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SnapMirror Cloud Restore 後に CIFS にアクセスできなくなる

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cloud-volumes-ontap-cvo
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perf<a>2009090823</a>
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環境

  • Cloud Volumes ONTAP 9.10.1
  • CIFS
  • SnapMirror クラウドのリストア

問題

  • SnapMirror クラウドのリストア後、 CIFS 共有にアクセスできなくなり、処理がタイムアウトします。
  • 次のようなイベントログエラー:
Mon Feb 28 12:11:50 1100 [node01: kernel: Nblade_CifsOperationTimedOut_1:error]: params: {'remoteBladeID': '3855f5a6-7d64-11ec-b35a-4d5fcf2e348d (node01)', 'cmdRestartCnt': '0', 'vserverId': '3', 'commandName': 'SMB2_COM_CREATE', 'isQosEnabled': 'QoS_disabled', 'lastSpinNpError': 'SPINNP_NO_FO_ERROR', 'localIpAddress': '10.10.100.143', 'lastCsmError': 'CSM_BACKPRESSURE', 'clientIpAddress': '10.10.255.121', 'vserverName': 'svmtest', 'suspensionCnt': '2069', 'dsId': '1037'}
Mon Feb 28 12:16:51 1100 [node-01: kernel: ems.engine.suppressed:debug]: Event 'Nblade.CifsOperationTimedOut' suppressed 51 times in last 293 seconds.
Mon Feb 28 12:26:57 1100 [node01: kernel: Nblade_CifsOperationTimedOut_1:error]: params: {'remoteBladeID': '3855f5a6-7d64-11ec-b35a-4d5fcf2e348d (node01)', 'cmdRestartCnt': '0', 'vserverId': '3', 'commandName': 'SMB2_COM_TREE_CONNECT', 'isQosEnabled': 'QoS_disabled', 'lastSpinNpError': 'SPINNP_NO_FO_ERROR', 'localIpAddress': '10.10.100.143', 'lastCsmError': 'CSM_BACKPRESSURE', 'clientIpAddress': '10.10.255.126', 'vserverName': 'svmtest', 'suspensionCnt': '2065', 'dsId': '1031'}
  • SMB2 の作成要求とツリー接続要求には、最大 40 秒の高レイテンシが必要です
cluster::*> statistics show-periodic -object smb2 -counter create_latency|tree_connect_latency -instance <svm> -summary false -interval 10 cluster: smb2.svmtest: 3/15/2022 14:36:37 tree create connect latency latency -------- -------- 42332159us 44us 42332191us 42us 42331286us 42335102us 42332996us 0us
  • パケットトレースから、 SMB2 ツリー接続と作成要求は 40 秒後に status_internal_error で失敗します。 
No. delta src dst PROT TCP_Len Response_time Info 135676 0.061154000 10.10.100.143 10.10.168.244 SMB2 77 [TCP ACKed unseensegment] Create Response, Error: STATUS_INTERNAL_ERROR 135680 0.012470000 10.10.168.244 10.10.100.143 SMB2 648 Create Request File: FASHION-2022-006_22_14_08_09.pdf 155007 0.001199000 10.10.100.143 10.10.168.242 SMB2 77 40.014543000 Create Response,Error: STATUS_INTERNAL_ERROR 155012 0.006675000 10.10.168.242 10.10.100.143 SMB2 568 Create Request File: FILES_Output.xml 182225 0.000102000 10.10.100.143 10.10.168.246 SMB2 77 40.014702000 Tree Connect Response, Error: STATUS_INTERNAL_ERROR 182238 0.001300000 10.10.168.246 10.10.100.143 SMB2 120 Tree Connect Request Tree: \10.10.100.143group7$ 185087 0.042234000 10.10.100.143 10.10.168.244 SMB2 77 Create Response, Error: STATUS_INTERNAL_ERROR 185088 0.007147000 10.10.168.244 10.10.100.143 SMB2 284 Create Request File: NShareTele 195602 0.002420000 10.10.100.143 10.10.168.248 SMB2 77 Tree Connect Response, Error: STATUS_INTERNAL_ERROR 195604 0.005818000 10.10.168.248 10.10.100.143 SMB2 120 Tree Connect Request Tree: \10.10.100.143group7$ 220790 0.088176000 10.10.100.143 10.10.168.241 SMB2 77 40.010021000 Tree ConnectResponse, Error: STATUS_INTERNAL_ERROR 220791 0.005019000 10.10.168.241 10.10.100.143 SMB2 120 Tree Connect Request Tree: \10.10.100.143group9$ 226800 0.019917000 10.10.100.143 10.10.168.244 SMB2 77 40.005785000 Create Response, Error: STATUS_INTERNAL_ERROR 226803 0.052802000 10.10.168.244 10.10.100.143 SMB2 648 Create Request File: FFASHION-2022-006_22_14_08_09.pdf 270263 0.118639000 10.10.100.143 10.10.168.242 SMB2 77 40.002190000 Create Response, Error: STATUS_INTERNAL_ERROR

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