Skip to main content
NetApp Knowledge Base

CIFS inaccessible after Snapmirror Cloud Restore

Last Updated:

Applies to

  • Cloud Volumes ONTAP 9.10.1
  • CIFS
  • Snapmirror Cloud restore


  • After a Snapmirror cloud restore, CIFS shares become inaccessible, with operations timing out.
  • Event log errors similar to:
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': '', 'lastCsmError': 'CSM_BACKPRESSURE', 'clientIpAddress': '', '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': '', 'lastCsmError': 'CSM_BACKPRESSURE', 'clientIpAddress': '', 'vserverName': 'svmtest', 'suspensionCnt': '2065', 'dsId': '1031'}
  • High latency ~40s for SMB2 create and tree-connect requests
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
   create      connect
  latency      latency
--------     --------
42332159us       44us
42332191us       42us
42331286us 42335102us
42332996us        0us
  • From packet trace, SMB2 Tree Connect and Create Requests fail with STATUS_INTERNAL_ERROR after 40s. 
No.    delta      src              dst            PROT  TCP_Len  Response_time   Info
135676 0.061154000  SMB2  77                       [TCP ACKed unseensegment] Create Response, Error: STATUS_INTERNAL_ERROR
135680 0.012470000  SMB2  648                      Create Request File: FASHION-2022-006_22_14_08_09.pdf
155007 0.001199000  SMB2  77       40.014543000    Create Response,Error: STATUS_INTERNAL_ERROR
155012 0.006675000  SMB2  568                      Create Request File: FILES_Output.xml
182225 0.000102000  SMB2  77       40.014702000    Tree Connect Response, Error: STATUS_INTERNAL_ERROR
182238 0.001300000  SMB2  120                      Tree Connect Request Tree: \$
185087 0.042234000  SMB2  77                       Create Response, Error: STATUS_INTERNAL_ERROR
185088 0.007147000  SMB2  284                      Create Request File: NShareTele
195602 0.002420000  SMB2  77                       Tree Connect Response, Error: STATUS_INTERNAL_ERROR
195604 0.005818000  SMB2  120                      Tree Connect Request Tree: \$
220790 0.088176000  SMB2  77       40.010021000    Tree ConnectResponse, Error: STATUS_INTERNAL_ERROR
220791 0.005019000  SMB2  120                      Tree Connect Request Tree: \$
226800 0.019917000  SMB2  77       40.005785000    Create Response, Error: STATUS_INTERNAL_ERROR
226803 0.052802000  SMB2  648                      Create Request File: FFASHION-2022-006_22_14_08_09.pdf
270263 0.118639000  SMB2  77       40.002190000    Create Response, Error: STATUS_INTERNAL_ERROR

Sign in to view the entire content of this KB article.

New to NetApp?

Learn more about our award-winning Support

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.
Scan to view the article on your device