From: Christoph Hellwig <hch@infradead.org>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
Amerigo Wang <amwang@redhat.com>,
linux-kernel@vger.kernel.org,
Stephen Hemminger <shemminger@vyatta.com>,
Rusty Russell <rusty@rustcorp.com.au>,
Anthony Liguori <aliguori@us.ibm.com>,
Jamie Lokier <jamie@shareable.org>, Thomas Weber <swirl@gmx.li>,
Ben Hutchings <ben@decadent.org.uk>,
David Woodhouse <David.Woodhouse@intel.com>,
Andy Fleming <afleming@freescale.com>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [RFC Patch] virtio: export model and type in /sys
Date: Tue, 1 Feb 2011 12:56:08 -0500 [thread overview]
Message-ID: <20110201175608.GA28913@infradead.org> (raw)
In-Reply-To: <20110201174607.GA24924@redhat.com>
On Tue, Feb 01, 2011 at 07:46:07PM +0200, Michael S. Tsirkin wrote:
> ide seems to export these too.
>
> $ cat /sys/class/block/sr0/device/model
> DVDRAM GSA-U20N
>
> and I am pretty sure my dvd isn't scsi ...
And I'm pretty sure it is, not just in one but two different ways.
For one all ATA attached CDROMS are ATAPI, which just means a SCSI
command set (MMC in this case) tunneled over an ATA transport. Second
libata always is a scsi low level driver, even when talking to ATA
disk, it just responds to the SCSI commands by translating them to
equivalent ATA commands or faking them up.
next prev parent reply other threads:[~2011-02-01 17:56 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-31 2:53 [RFC Patch] virtio: export model and type in /sys Amerigo Wang
2011-01-31 4:05 ` Rusty Russell
2011-01-31 5:45 ` Cong Wang
2011-01-31 14:02 ` Anthony Liguori
2011-02-01 17:41 ` Christoph Hellwig
2011-01-31 9:52 ` Michael S. Tsirkin
2011-02-01 17:37 ` Christoph Hellwig
2011-02-01 17:46 ` Michael S. Tsirkin
2011-02-01 17:56 ` Christoph Hellwig [this message]
2011-02-04 6:29 ` Cong Wang
2011-02-12 7:17 ` Christoph Hellwig
2011-02-12 9:56 ` Cong Wang
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