Date: Wed, 1 Jan 1997 01:38:31 -0200 (EDT) From: Joao Carlos Mendes Luis <jonny@mailhost.coppe.ufrj.br> To: dufault@hda.com (Peter Dufault) Cc: bde@zeta.org.au, core@freebsd.org, freebsd-scsi@freebsd.org, j@uriah.heep.sax.de Subject: Re: Iomega SCSI Zip Drive Message-ID: <199701010338.BAA12509@gaia.coppe.ufrj.br> In-Reply-To: <199701010100.UAA20316@hda.hda.com> from Peter Dufault at "Dec 31, 96 08:00:55 pm"
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#define quoting(Peter Dufault)
// > >In the long run, i would see all removable disks go to `od'. We could
// > >then continue to improve the `sd' driver for fixed media devices.
// >
// > `od' is an odd name for a removable scsi disk driver.
//
// "od" should be the type-specific driver for a SCSI device that
// claims to be an "optical memory device". The optical memory device
// has specific behavior defined for some commands in the SCSI-II
// spec. Being "od" need not require removable media (granted I don't
// see the advantage of a fixed "od").
So what we need is (better) support for removable media in "sd" ?
Maybe a simple flag to identify removable devices and change
the behaviour ?
For those who didn't receive my message about it, the "sd" driver
gives lot's of warnings (media change, not ready, etc) with my ZIP drive.
But the worst problem was a drop into the debugger ("sdopen: no slices")
when I changed disks. With "od", I have no more problems.
Note that the drop to debugger is nasty when you are in X: you cant
"cont" the system.
This week we'll try the "od" driver also with the ppa (Parallel Port
SCSI) driver. Results will be sent to freebsd-scsi.
Jonny
--
Joao Carlos Mendes Luis jonny@gta.ufrj.br
+55 21 290-4698 ( Job ) jonny@cisi.coppe.ufrj.br
Network Manager UFRJ/COPPE/CISI
Universidade Federal do Rio de Janeiro
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