01/25/2005 3:05 PM
post4469
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Additional response from Andrew Grimshaw
Hi Andrea, Andrew Grimshaw (<<ASG>>) has been leading the OGSA-WG's work on naming, and he gave the following response.
We've made some changes in this area.
- Jem
4. In the definition of name, I would disagree that "human-oriented names" uniquely identify an entity (as the opening
sentence of the defn states). Human-oriented names MAY NOT be unique, but certainly are criteria by which an entity may
be located. Also in the definition of name, the following text is found: "Abstract names are bound to addresses."
This seems very vague. What is the intent? Within an implementation, an abstract name is used to locate/address an
instance/entity. But, the binding may not be externally visible and may not relate to an "address" as defined in the
subsequent bullet. Lastly, as regards the definition of an address, what is a "concrete name"? This is a new term that
is not defined. [JT: Note that Heather Kreger recently (9/10/2004) proposed some definitions of name and related terms
for WSDM.]
<< ASG: I agree completely. Human names may be many-to-one to abstract names, or perhaps one-to-many � that has not
been agreed to yet but I believe so. As to the binding issue I am not sure I understand the comment. The intent is that
a name may be bound (resolved) to an address. The term "concrete name" was used as an equivalence to address so we
should remove the term "concrete name".>>
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12/17/2004 4:59 PM
post4470
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Response to Comments from Andrea Westerinen
Hi Andrea, thanks very much for your comments on the OGSA Glossary. We've now reviewed all the comments, and
incorporated some of them; I hope to submit the updated draft to the editor within the next few days. Below are the
specific responses:
>1. Event - The definition is restricted to a "computer system" but
> that seems too limiting. Recommend saying "Anything that occurs in or
> to a computer, storage or network system, or that is monitored by such a system,
> that is potentially interesting ..."
Reworded as "IT system".
> 2. Recommend including a definition of JSIM (the Job Submission Information
> Model) from CGS, since JSDL is mentioned. BTW, JSIM and JSDL need to be aligned
> at the conceptual level.
We decided not to include JSIM in the Glossary, as it isn't mentioned in the OGSA document.
>3. The definition of "Manageable resource" specifically calls out
> provisioning. Why only provisioning and not monitoring, eventing, inventory
> mgmt (hdw and software), etc.?
We discussed definitions in the areas of manageability and resources at length, and made some significant changes.
>
>4. In the definition of name, I would disagree that "human-oriented names"
> uniquely identify an entity (as the opening sentence of the defn states).
> Human-oriented names MAY NOT be unique, but certainly are criteria by which
> an entity may be located. Also in the definition of name, the following text
> is found: "Abstract names are bound to addresses." This seems very
> vague. What is the intent? Within an implementation, an abstract name is
> used to locate/address an instance/entity. But, the binding may not be externally
> visible and may not relate to an "address" as defined in the subsequent
> bullet. Lastly, as regards the definition of an address, what is a "concrete
> name"? This is a new term that is not defined.
We're in the process of reviewing naming definitions in light of this and other comments, and I do expect that we'll
make some changes in this area before we submit the document.
>5. As regards the definition of policy, there is also a definition in IETF's
> RFC3198.
Good pointer! We made no change made to the wording as our definition doesn't conflict, but this is a useful reference
for several terms, so I added a Reference to RFC3198.
>6. The definition for "Self-management" is similarly restricted to
> computers as is the definition for "Event". Recommend making a similar
> change to expand the scope beyond just "computers", or to define
> a "system" as a compute, network or storage entity.
Done!
><>7. SLA and SLO terminology is also defined in IETF's RFC3198.
>
Right - see 5 above.
>8. Would also suggest including CIM, the Common Information Model from the DMTF,
> in the list of defns. It defines an object-oriented model for resource
> management.
Agreed, and done.
Thanks!
- Jem
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