Having recently been exposed to the Sun Solaris smf subsystem, are there
any thoughts on extending NetBSD's rc system to provide monitoring of
the started services? ie, who/what is responsible for monitoring the
health of a particular service provided by the rc.d script?

Essentially that's the main difference with the Sun tools - they also
produce a graph of services to start and then walk the graph to bring
things up and down but they have something to monitor services once
they've been started and with appropriate configuration, restart them or
kill/restart services which depend on them if necessary.

Apart from the fact that the configuration files to manage it are way
over-engineered, it looks pretty good ...

-- 
Malcolm Herbert                                This brain intentionally
mjch@mjch.net                                                left blank