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ONTAP API error: "Could not create path, error = System.IO.IOException: The system cannot open the file."

Last Updated:

Applies to

  • SMB2.X/3.X
  • ONTAP 9.2X
  • Multiple files open


  • Error from NetApp API: "NetAppRestAPIImpl->GetPathForProduct: Could not create path, error = System.IO.IOException: The system cannot open the file"
  • Opening and closing files takes longer than expected
  • sktraces logs show rt=379 (RESULT_ERROR_CIFS_SMB_FILE_LIMIT_EXCEEDED):

                ... NBLADE_Chk:  n0x80bdae: src/Protocols/Cifs/FrameWork/Connection.cpp:1148 rt=379

  • "vserver cifs session show"  command shows 524287 open files on a single cifs connection. Example:

                Node: <Node_Name>

                Vserver: <Vserver_Name>

                Connection Session Open Idle Connection

                ID ID Workstation Windows User Files Time Count

                ---------- ------- ---------------- ---------------- --------- ------------ ---------------


       DOMAIN\User1 524287



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