[7869] in linux-scsi channel archive
Re: rescan devices command?
daemon@ATHENA.MIT.EDU (Kurt Garloff)
Fri Jan 21 07:52:02 2000
Date: Thu, 20 Jan 2000 23:07:29 +0100
From: Kurt Garloff <garloff@suse.de>
To: h.milz@seneca.muc.de
Cc: linux-scsi@vger.rutgers.edu
Message-ID: <20000120230729.B21317@mobil.tue.nl>
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On Sun, Jan 16, 2000 at 10:47:34PM +0100, Harald Milz wrote:
> Jeffrey B. Siegal <jbs@quiotix.com> wrote:
> > You can't reliably do this without hot swap connectors. Standard SCSI
> > hardware is not designed for hot swap, and doing so can even result in
> > hardware damage. However, it usually does work in practice.
>
> If the bus is quiescent. If not, risks your data. This is thoroughly
> discussed in the High Availability HOWTO.
True.
What you can normally safely do, is to switch on an off SCSI devices.
(Also this can go wrong if their bus driver hardware is misdesigned and
spits out random signals on poweron.)
BTW, I have a script, which does facilitate the checking for new devices on
http://www.garloff.de/kurt/linux/rescan-scsi-bus.sh
which might be useful for you.
--
Kurt Garloff <garloff@suse.de> Eindhoven, NL
GPG key: See mail header, key servers Linux kernel development
SuSE GmbH, Nuernberg, FRG SCSI, Security
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