[98393] in RedHat Linux List
Re: Wanted, SCSI bus trick
daemon@ATHENA.MIT.EDU (Dale E. Reed Jr.)
Sun Nov 8 20:53:37 1998
Date: Sun, 08 Nov 1998 17:44:06 -0800
From: "Dale E. Reed Jr." <daler@iea-software.com>
To: redhat-list@redhat.com
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
M. Neidorff wrote:
>
> >
> >Which all makes me wonder if there is a way to "reboot" the SCSI adapter
> >from inside Linux...
> >
> >Depending on who made your adapter and how well they support Linux this
> >might be a good question for the manufacturer.
>
> While I can't give you a direct answer, perhpas this will help. Due to old
> bios, when I reboot this computer (when in linux) the scsi adapter doesn't
> get quite reset properly and so does not recoginze any of the devices on
> the scsi bus. Sometimes I have to power the system down (as opposed to
> reset button or 3 finger salute) to get the scsi bus back on track. From
> this, I think that once the bus recoginzed its devices before os boot, you
> can't add more devices. All scsi devices need to be on when the computer
> is turned on.
This is completley dependant on the SCSI controller. Most low end SCSI
controllers do not support adding drives on the fly. If you have a high
end card, it usually will support hot swap drives, which allow you to
plug in a device device, turn it one, and have the SCSI Controller
recognize it on its next rescan of the bus (usually configurable in the
BIOS).
--
Dale E. Reed Jr. (daler@iea-software.com)
_________________________________________________________________
IEA Software, Inc. | RadiusNT, Emerald, and NT FAQs
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