[9278] in linux-scsi channel archive
Re: Problem w/ recent scsi_scan changes
daemon@ATHENA.MIT.EDU (Justin T. Gibbs)
Mon Jul 31 19:13:10 2000
Message-Id: <200007312308.RAA18700@pluto.plutotech.com>
To: Michael Lang A2 <langa2@kph.uni-mainz.de>
cc: Steve Ralston <sralston@ra.ks.lsil.com>,
linux-scsi <linux-scsi@vger.rutgers.edu>
In-Reply-To: Your message of "Mon, 31 Jul 2000 12:46:40 +0200."
<Pine.LNX.4.10.10007311236030.11473-100000@gosodrom.kph.uni-mainz.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Mon, 31 Jul 2000 17:09:38 -0600
From: "Justin T. Gibbs" <gibbs@plutotech.com>
>The reason for why this has been changed was, that some SCSI-devices,
>mainly those with changeable media, like tapedrives, CD-ROMs or Syquest
>drives won't get recognized. The TEST_UNIT_READY may fail on such devices,
>if no medium is inserted. The INQUIRY command should always work on
>physically present drives, no matter if a medium is present or not and it
>therefore offers the safest way to detect some SCSI-device.
Does Linux look at the content of the inquiry data to determine if
the Lun really is supported before attaching to it? Linux should only
attach if the lun qualifier is 0 (top 3 bits in byte 0 of inquiry
response).
--
Justin
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