On Mon, Sep 28, 2026 at 07:48:07PM -0600, Brook Milligan wrote: > However, following fssconfig(8), the command > > # fssconfig fss0 /usr /tmp/back > > yields the following error: > > fssconfig: /dev/rfss0: FSSIOCSET: Invalid argument > > So far, anything with the path argument not / yields the invalid argument.
Is /usr a separate file system in your setup? You can not snapshot sub directories. Martin
