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Date:      Wed, 9 Feb 2000 02:41:09 -0800
From:      Alfred Perlstein <bright@wintelcom.net>
To:        "Jeffrey M. Metcalf" <Jeffrey_Metcalf@hotmail.com>
Cc:        questions@FreeBSD.ORG
Subject:   Re: Q: Hot swap SCSI devices
Message-ID:  <20000209024108.U17536@fw.wintelcom.net>
In-Reply-To: <20000209031417.34138.qmail@hotmail.com>; from Jeffrey_Metcalf@hotmail.com on Tue, Feb 08, 2000 at 10:16:35PM -0500
References:  <20000209031417.34138.qmail@hotmail.com>

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* Jeffrey M. Metcalf <Jeffrey_Metcalf@hotmail.com> [000209 02:36] wrote:
> Hello,
> 
> I am running FreeBSD-3.4 on an i386 box and was wondering
> if FreeBSD allowed for the hot swapping of certain external
> SCSI devices.  With linux, I can make my scsi card support
> a module in the kernel.  That way if I forgot to power up
> my external SCSI Zip drive, say, I can unload the module,
> power up my SCSI device, then reload the module.  Voila,
> a new SCSI bus probe occurs and my Zip is detected.  I'm
> pretty sure FreeBSD-3.4 can't do SCSI support as an LKM,
> but maybe someone knows of a way I can induce a hot reprobe
> of the SCSI bus for newly added devices?  If there's no
> command line way to do this, can I hack something?  My
> SCSI card is supported by the new CAM subsystem.  Can
> I take advantage of anything there for devices like Zip drives?

That sounds like an awful kludgy way to rescan for devices, you
ought to take a look at the camcontrol manpage under FreeBSD.

man camcontrol

-Alfred


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