[182] in linux-scsi channel archive
Re: SCSI disk SPIN-UP on pwr-up ?
daemon@ATHENA.MIT.EDU (Andreas Koppenhoefer)
Fri May 19 16:21:44 1995
From: Andreas Koppenhoefer <koppenas@koppenas.informatik.uni-stuttgart.de>
To: linux-scsi@vger.rutgers.edu
Date: Fri, 19 May 1995 21:28:20 +0200 (MET DST)
Cc: pe1chl@wab-tis.rabobank.nl
Reply-To: Andreas.Koppenhoefer@studbox.uni-stuttgart.de (Andreas Koppenhoefer)
In-Reply-To: <9505191107.AA01029@sys3.pe1chl.ampr.org> from "Rob Janssen" at May 19, 95 01:07:11 pm
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> In <blevinD8s9xG.8Aq@netcom.com> blevin@netcom.com (Bryan Levin) writes:
>
> >On many unix workstations, the scsi disks only spin up with a scsi command.
> >As such, most hard drives (I've encountered) don't spin up until told to do
> >so.
>
> [...]
> Who added this spin-up code? Did it work?
I don't know origin of spin-up code, but it works for my FUJITSU
M2694ES-512 which has a dip-switch for spin-up at power up.
However I've encountered another problem with spin-up code. Since I'm
booting from ide disk, I stripped down kernel to include rudimentary
drivers only. While loading aha1542 module with insmod my scsi disk
keeps sleeping - no spin-up!
What's the difference between loading scsi driver as module versus
using as compiled in kernel driver?
Currently I'm using 1.2.8 with scsi-idle patch.
Andreas
- --
Andreas Koppenhoefer, Student der Universitaet Stuttgart, BR Deutschland
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