> Jeffrey, what happens if you powercycle the 3100 and the drive
> completely? Does that help?  If not, I gues we'll have to look at
> building a kernel with debugging compiled in.

Powercycling has no effect...

> Or can you compile and test a patched rz driver locally from your 1.2G
> system?  If so, the first thing is to change rz.c to print out the
> result of rz_getsize(). It's only called once, should be easy to
> find....

Well, I finally dug up enough disk space to compile a kernel,
and added some printf's to rz.c.  Its not even getting as far
as rz_getsize().  It seems to be failing at the if statement starting
on line 457 of rz.c in rzprobe():

	if (biowait(&sc->sc_buf) ||
	    (i = sizeof(inqbuf) - sc->sc_buf.b_resid) < 5)
		goto bad;

In this case, sizeof(inqbuf) == sc->sc_buf.b_resid == 1068, so
the second part of the test is true.  (biowait() is returning 0)
Any ideas?

Thanks,

   -Jeff