Re: LANANA: To Pending Device Number Registrants

[H. Peter Anvin]

Chip Salzenberg wrote:
> 
> According to H. Peter Anvin:
> > A device can inherently belong to multiple device classes, and it
> > really should be thought of as such.
> 
> And then there are layering technologies like LVM and loopback.
> They should be included in a discovery, but if you limit yourself
> to one "device type", there's no place for them.
> 
> > For example a disk may belong, at the same time, to the "scsi",
> > "disk" and "scsi-disk" device classes [...]
> 
> True, but in a sane system, "scsi" + "disk" implies "scsi-disk".
> 

Well, of course, but it's still a separate class.  An operation can
belong to "scsi-disk" that doesn't belong in either "scsi" or "disk". 
You can replace the - with an upside-down U if you want; it's not in
Latin-1 unfortunately.

        -hpa

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