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Date:      Thu, 9 Nov 2000 14:34:19 -0800 (PST)
From:      Matthew Jacob <mjacob@feral.com>
To:        "Kenneth D. Merry" <ken@kdm.org>
Cc:        Wilko Bulte <wkb@freebie.demon.nl>, mjacob@FreeBSD.ORG, FreeBSD-alpha mailing list <freebsd-alpha@FreeBSD.ORG>, justin@FreeBSD.ORG
Subject:   Re: SCSI cdrom attach problems on 4-stable
Message-ID:  <Pine.BSF.4.21.0011091432070.46819-100000@beppo.feral.com>
In-Reply-To: <20001106135917.A6554@panzer.kdm.org>

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I updated the PR (22650) with edit-pr, but it doesn't seem to then email
submitter/responsible person. The short answer is "f/w breakage(?), don't know
how to fix yet".

mjacob Wed Nov  8 17:08:53 PST 2000

Okay- here's what is happening- the Qlogic f/w is returning an AUTOSENSE
failure- that is, it's unable to automatically run a request sense
(reason unknown). So, the CAM status being returned is 

        CAM_AUTOSENSE_FAIL 
        CAM_DEV_QFRZN

It's been apparent to me for some time that cam_periph_error should be
then running an INQUIRY command in this case.

What's particularly obnoxious here is that the CD in question doesn't
actually completely detach- that is, it's pass instance stays, but
the cd instance won't attach- and this, for some reason, makes it
impossible to rescan it later.

I don't know why the Qlogic f/w is returning this code, but the fundamental
problem here is that CAM is broken. And, no, it's not up to each SIM to
run INQUIRY commands themselves if AUTOSENSE fails.







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