linux-kernel - Re: [PATCH v2] libata: Simulate REPORT LUNS for ATAPI devices

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Message-ID: <45780726.8010107@garzik.org>
Date:	Thu, 07 Dec 2006 07:20:54 -0500
From:	Jeff Garzik <jeff@...zik.org>
To:	"Darrick J. Wong" <djwong@...ibm.com>
CC:	linux-scsi <linux-scsi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>
Subject: Re: [PATCH v2] libata: Simulate REPORT LUNS for ATAPI devices

Darrick J. Wong wrote:
> The Quantum GoVault SATAPI removable disk device returns ATA_ERR in
> response to a REPORT LUNS packet.  If this happens to an ATAPI device
> that is attached to a SAS controller (this is the case with sas_ata),
> the device does not load because SCSI won't touch a "SCSI device"
> that won't report its LUNs.  Since most ATAPI devices don't support
> multiple LUNs anyway, we might as well fake a response like we do for
> ATA devices.
> 
> Signed-off-by: Darrick J. Wong <djwong@...ibm.com>

Seems sane to me, but I would like additional comment/testing/etc. 
before applying...


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