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Access denied by FPolicy server synchronous response

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Category:
ontap-9
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nas
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Applies to

  • ONTAP
  • CIFS
  • FPolicy

Issue

  • During multiple file operations, e.g. copying the directory from CIFS share to local disk when every single file has to be recalled by the Fpolicy archiving solution, files get copied successfully until an "access denied" error is returned for one file. If the operation is retried, it succeeds until the next error is returned some files further.
  • A vserver security trace show access denied by Fpolicy server

Example

vserver security trace trace-result show 

Vserver: svm1 
Node            Index Filter Details             Reason

--------------- ----- -------------------------- ------------------------------ 
node01            1     Security Style:  -
                                                 Access is denied by the 
                                                 FPolicy server or due to 

                                                 mandatory attribute of the 
                                                 FPolicy policy. 

 Protocol: cifs 
                      Volume: - 
                      Share: share1 
                      Path: - 

           Win-User: Domain\user1 
                      UNIX-User: root 
                      Session-ID: xxxxxxxxxxxxxxxxxxx 

  • Fpolicy  logs in ONTAP may contain DENY response:
Example
 
[kern_fpolicy:nfo:6553] [enum clnt_stat FSMNbladeRespTask::shmSendRespToNblade(std::list<nbladeRespQueueElement_t> &, int, char *, CLIENT *)] reqId = XXXXXXXXXX respCode 2 : DENY 
 
  • A network trace capturing the traffic between the Fpolicy external-server  would show that the file open is denied by the FPolicy external-engine:
Example
 
Screen Request (18226441) SMB_OPEN: \path\to\file.ext
Screen Response (18226441) SMB_OPEN: Denied
 

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