[7685] in linux-scsi channel archive
Re: How do I invoke a re-probe/Hot Plugging Devices
daemon@ATHENA.MIT.EDU (Robert Frey)
Mon Dec 13 12:48:58 1999
Message-Id: <m11xZOn-00001XC@deneb.advansys.com>
Date: Mon, 13 Dec 1999 09:36:37 -0800 (PST)
From: bobf@advansys.com (Robert Frey)
To: alan@lxorguk.ukuu.org.uk, eric@andante.org
Cc: linux-scsi@vger.rutgers.edu
Eric wrote:
> If you can ensure that the host is otherwise idle, then I would
> feel more comforatable about adding and removing new devices on the fly.
>
Interesting topic! Hot plugging of (SCSI) devices is something that needs
to be architecturally handled in the future. 1394 (SBP2) and FibreChannel
(FCP-SCSI) both support SCSI command set devices that are hot pluggable
without notification to the OS (surprise removal). Is anybody working on
these issues? Ideally I don't think hot plugging can be handled in bus
specific ways - it should be handled by the whole I/O system must identify
a device by its global unique id and bus reset generation count.
Bob Frey
bobf@advansys.com
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