From: Jeff Garzik <jeff@garzik.org>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>,
Daniela Engert <dani@ngrt.de>,
Boaz Harrosh <bharrosh@panasas.com>,
linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org,
LKML <linux-kernel@vger.kernel.org>,
Jens Axboe <jens.axboe@oracle.com>, Tejun Heo <htejun@gmail.com>
Subject: Re: [PATCH] libata: rewrite SCSI host scheme to be one per ATA host
Date: Wed, 22 Apr 2009 14:36:22 -0400 [thread overview]
Message-ID: <49EF63A6.8040103@garzik.org> (raw)
In-Reply-To: <1240414622.3431.14.camel@mulgrave.int.hansenpartnership.com>
James Bottomley wrote:
> On Wed, 2009-04-22 at 16:18 +0100, Alan Cox wrote:
>>> Don't forget, there are ATAPI devices (some Sony CD burners and old
>>> phase-changers come into mind) which *do* have multiple LUNs sitting
>>> beyond the PATA port. I don't know if libata supports such setups (my
>>> old OS/2 driver does) but one shouldn't hijack LUNs to emulate targets.
>> It's a long time ago since I tested it but my 5 CD changer was correctly
>> supported by libata (or more accurately by sr...).
>
> Well, sr supports the discovered CD/DVD; ch is the actual changer
> manager. Usually ch attaches to one LUN and sr attaches to another.
Like Alan's, if I understand him correctly, my PATA ATAPI CD changer
simply presents a bunch of addressible LUNs. I never loaded, nor seemed
to need, ch.
I should boot a current libata and see how it behaves...
Jeff
next prev parent reply other threads:[~2009-04-22 18:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 9:09 [PATCH] libata: rewrite SCSI host scheme to be one per ATA host Jeff Garzik
2009-04-22 9:23 ` Jeff Garzik
2009-04-22 12:16 ` Boaz Harrosh
2009-04-22 15:10 ` Daniela Engert
2009-04-22 15:18 ` Alan Cox
2009-04-22 15:37 ` James Bottomley
2009-04-22 16:27 ` Alan Cox
2009-04-22 18:36 ` Jeff Garzik [this message]
2009-04-22 19:27 ` James Bottomley
2009-04-22 16:48 ` Jeff Garzik
2009-04-23 6:35 ` Jens Axboe
2009-04-23 10:39 ` Jeff Garzik
2009-04-23 10:43 ` Jens Axboe
2009-04-22 13:09 ` Mark Lord
2009-04-22 16:52 ` Jeff Garzik
2009-04-22 19:08 ` Grant Grundler
2009-04-23 11:00 ` Jeff Garzik
2009-04-23 17:59 ` Grant Grundler
2009-04-23 18:09 ` James Bottomley
2009-04-24 11:00 ` Stefan Richter
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