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CIFS and Ontap upgrade to 9.1

What is the recommended procedure for terminating SMB connections prior to performing an OnTap upgrade.

 

I have tried to perform "cifs session close -node * session * to close all active sessions but during the upgrade the SFO failback fails due to veto errors and SMB file locks if they happen to automatically reconnect to their sessions.

 

Is it best to do "Vserver cifs stop" prior to upgrade??

 

Thanks

 

K.

Re: CIFS and Ontap upgrade to 9.1

Identifying active CIFS sessions that should be terminated

 

Before performing a nondisruptive upgrade or downgrade, you should identify and gracefully terminate any CIFS sessions that are not continuously available.
Continuously available CIFS shares, which are accessed by Hyper-V clients using the SMB3 protocol, do not need to be terminated before upgrading or downgrading.

 

 1. Identify any established CIFS sessions that are not continuously available:
    ::> vserver cifs session show -continuously-available !Yes -instance
    This command displays detailed information about any CIFS sessions that have no continuous availability.
    Each of the sessions identified by this command should be terminated before proceeding with the Data ONTAP upgrade or downgrade.

 

 2. If necessary, identify the files that are open for each CIFS session that you identified:
    ::> vserver cifs session file show -session-id session_ID

 

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