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Date:      Tue, 25 Jul 2000 13:28:06 -0600
From:      "Justin T. Gibbs" <gibbs@plutotech.com>
To:        mjacob@feral.com
Cc:        "Justin T. Gibbs" <gibbs@plutotech.com>, freebsd-arch@FreeBSD.ORG
Subject:   Re: How much do we need the all-singing, all-dancing devfs? 
Message-ID:  <200007251927.NAA48018@pluto.plutotech.com>
In-Reply-To: Your message of "Tue, 25 Jul 2000 12:13:34 PDT." <Pine.BSF.4.10.10007251212470.56819-100000@beppo.feral.com> 

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>
>But there is a fully qualified 128 bit WWN. It's type 6, and it's in page 0x83
>of VPD info for Inquiry in SPC2.

But not all devices are SCSI and not all SCSI devices have WWNs, so
calling the FreeBSD representation of a virtual device identifier
a WWN will lead to confusion when the identifier doesn't come from
a WWN.  The CAM3 spec talks a bit about virtual device identifiers
and leaves it up to the implementer to decide what data is appropriate
to make it unique.

--
Justin


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