The lustre.spec.in file makes the userspace lustre or lustre-client userspace tools depend on the exact kmod-lustre or kmod-lustre-client version that is installed:

        %global requires_kmod_version %{version}
Requires: %{requires_kmod_name} = %{requires_kmod_version}

This can make it inconvenient to upgrade only the user tools in case of bugs that are only affecting lfs or lctl or liblustreapi.

It would be much more convenient if the user tools depended on a more 'generic' kmod version. For example, on b2_15:

Requires: %{requires_kmod_name} >= 2.15.0