vserver cifs prepare-to-downgrade

Restore the CIFS Configurations to Earlier Release of Data ONTAP Version

Availability: This command is available to cluster administrators at the advanced privilege level.


The vserver cifs prepare-to-downgrade command restores the CIFS configurations for Data ONTAP based on the input parameter disable-feature-set.


-disable-feature-set <downgrade version> - Data ONTAP Version
This parameter specifies the Data ONTAP release for which the CIFS configurations are restored. The value can be one of the following:
  • 8.3.1 - Restores the CIFS configurations for Data ONTAP release 8.3.1. These features include:
    • FPolicy "close with read" filters from FPolicy events.
    • CIFS server options -guest-unix-user and -is-admin-users-mapped-to-root-enabled.
    • CIFS security option is-smb-encryption-required.
    • Storage-Level Access Guard (SLAG) for qtrees.
    • CIFS share property encrypt-data.
  • 8.3.2 - Restores the CIFS configurations for Data ONTAP release 8.3.2. These features include:
    • CIFS server option -grant-unix-group-perms-to-others.
  • 9.0.0 - Restores the CIFS configurations for Data ONTAP release 9.0.0. These features include:
    • Disable CIFS multichannel feature and close all multichannel connections.
    • Delete all the name-mapping entries that have a hostname or an address field configured.
    • Terminate all SMB 3.1 client connections.
    • Terminate all client connections that have large MTU negotiated.
    • Remove the symlink property no-strict-security.
    • Remove all symlink pathmap entries with locality freelink.


      cluster1::*> vserver cifs prepare-to-downgrade -disable-feature-set 8.3.1
      cluster1::*> vserver cifs prepare-to-downgrade -disable-feature-set 8.3.2
      cluster1::*> vserver cifs prepare-to-downgrade -disable-feature-set 9.0.0