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From: Cong Wang <amwang@redhat.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: linux-kernel@vger.kernel.org,
	Stephen Hemminger <shemminger@vyatta.com>,
	Rusty Russell <rusty@rustcorp.com.au>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	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: Sat, 12 Feb 2011 17:56:13 +0800	[thread overview]
Message-ID: <4D56593D.1000603@redhat.com> (raw)
In-Reply-To: <20110212071711.GB18475@infradead.org>

于 2011年02月12日 15:17, Christoph Hellwig 写道:
> On Fri, Feb 04, 2011 at 02:29:55PM +0800, Cong Wang wrote:
>>> It does not make any sense to fill this at all in virtio.  The
>>> attributes are simply exporting the SCSI INQUIRY data, and do not make
>>> any sense at all outside a SCSI context.  In fact the type field even
>>> contains numbers from the scsi protocol spec that just don't make sense.
>>>
>>
>> Hmm, so other non-SCSI devices don't have these neither?
>> Do you have any suggestions to find another way to identify a disk?
>
> Many modern disks have uuid strings identifying them, e.g. virtio-blk
> has a serial attribute for it.  For SCSI and ATA they are retreived
> by issuing the commands to get them through the pass through ioctls
> right now, but I'd love to see the serial sysfs attribute implemented
> there as well.

Hmm, looks promising but needs more efforts.

Thanks!

      reply	other threads:[~2011-02-12  9:57 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
2011-02-04  6:29   ` Cong Wang
2011-02-12  7:17     ` Christoph Hellwig
2011-02-12  9:56       ` Cong Wang [this message]

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