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SMB change notifications provide macOS with updates or changes to mounted file shares. SMB notifications provided by PowerScale provide the macOS client with this information in a OneFS environment. With a busy file share, the macOS Finder may refresh itself frequently. Users may notice their file listings fluctuating or Finder windows reset to the top-level directory while browsing. To avoid this behavior, it is possible to disable the Finder from requesting SMB change notifications.
Applying this setting can break workflows that require SMB notifications for folder listings to be current. For example, the collaborative Productions feature in Adobe Premiere Pro relies on change notifications to be active on all clients participating in the Production. Disabling change notifications can also lead to data corruption and other issues where multiple users are accessing the same files and directories. As with all macOS optimizations, great care and testing are required to ensure that enabling this setting does not cause workflow problems.
To disable SMB notification, add the following line to the /etc/nsmb.conf file:
notify_off=yes
After updating /etc/nsmb.conf, unmount and remount SMB shares from the macOS system for the changes to take effect.