While our product is Lustre-based, we don't use the HSM feature, which I think is the
only thing that FSAL_LUSTRE adds (from memory). From that point of view I wouldn't be
too concerned to see the current FSAL_LUSTRE removed.
However, if we get some more non-POSIX Lustre features, which is a possibility, then we
might (attempt to) bring back an expanded FSAL_LUSTRE. In that case we would commit to
supporting it.
peace & happiness,
martin