Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 2 Jun 1997 10:45:59 -0400 (EDT)
From:      Peter Dufault <>
To: (Josef Karthauser)
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Reprobing the scsi bus.
Message-ID:  <>
In-Reply-To: <> from Josef Karthauser at "Jun 2, 97 02:59:10 pm"

Next in thread | Previous in thread | Raw E-Mail | Index | Archive | Help
> Does any body know how to reprobe the scsi bus during runtime?
> I've got a 2.2.2 machine with a disk on sd0, sd1 and sd2.
> I've just added a drive on sd3, but the kernel doesn't know
> about it because it wasn't there when the system booted.
> scsi(8) talks about a /dev/super/scsi device, but I can't find
> the node numbers for it anywhere.

Apply the reprobe to any of the existing scsi control devices
(e.g., /dev/rsd0.ctl).  That super device is/was supposed to be
a back door for a bus with nothing present at power up.  Whether
or not the reprobe works or hangs your system is a function
of host adapter and OS release, and so you are better off with
a reboot unless you know it works.

Peter Dufault (   Realtime development, Machine control,
HD Associates, Inc.               Safety critical systems, Agency approval

Want to link to this message? Use this URL: <>