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- Submitted-by: jsh@canary.com (Jeffrey S. Haemer)
-
- USENIX Standards Watchdog Committee
-
- Stephen Walli <stephe@usenix.org>, Report Editor
-
-
- Report on ANSI X3B11.1: WORM File Systems
-
-
- Andrew Hume <andrew@research.att.com> reports on the current
- progress of work within X3B11.1.
-
-
-
- Introduction
-
- X3B11.1 is working on a standard for file interchange on
- random-access optical media: a portable file system for
- WORMs or rewritable optical disks. TC15 is a committee
- within ECMA that works on file system standards. This
- report covers the last two X3B11.1 meetings. In brief, our
- ECMA standard has been published, we have entered the fast-
- track process, and are now DIS 13346!
-
- ECMA-167
-
- I won't describe ECMA-167 again; if you want the gory
- details, see my last snitch reports. At the time of my last
- report, the ECMA General Assembly had approved ECMA-167 as a
- standard and ``all'' we had to do was publish it. This was
- not an entirely smooth process, but it could have been
- worse.
-
- The source of the draft was a weird form of text that, after
- processing by several awk and sed scripts, became more or
- less normal troff -ms input. The ECMA office uses a popular
- PC publishing package. The conversion was mostly done
- mechanically (using RTF as the intermediate form) with our
- chair Ed Beshore doing the final pass by hand on his PC
- before sending floppies off to Geneva. A mere three galley
- proofs later, I (as technical editor) approved the current
- draft. Proofing galleys is about as tedious as it sounds.
- (It's good to do while watching Sunday afternoon football.)
- I was ably assisted by Howard Kaikow, now no longer at DEC.
- The draft was much improved stylistically by this process,
- although I personally find the ECMA house format to be visu-
- ally unappealing.
-
- International_Activity
-
- There is substantial international interest in volume and
- file structure standards, particularly for removable optical
- media. That is why our committee has an ISO standard as its
- main goal, rather than an ANSI standard. That is also why
- we have bent over backwards to solicit input from, and work
- with, Europe (ECMA), Japan (JNC), and ISO (SC15).
-
- We were very pleased to learn that ECMA-167 is now DIS
- 13346. The six-month ballot period will end July 28, 1993
- and the special working group meeting that addresses the
- ballot responses has been tentatively scheduled for October
- 13-15, 1993 in Geneva, Switzerland. The end is definitely
- in sight.
-
- The other activity going on in SC15 is work on a reference
- model for Information Interchange between Open Systems by
- Interchangeable Storage Media. This is similar to the OSI
- reference model; in fact, rather too similar in my mind.
- Although reference models can be astonishingly boring, a
- good one would have helped the development of our standard a
- little, and a bad one can easily hinder the development of
- good standards. The current draft of the reference model
- represents early work and is being commented on by
- interested parties in our committee and by an ad hoc group
- in X3B8.
-
- Future_Activity
-
- The committee's focus is now split among three areas.
-
- The first area is preparing for voting on DIS 13346. This
- is fairly routine but intricate because of procedural rules
- and delays within the U.S.; documents have to get passed
- from ISO to ANSI to X3 to X3B11 and finally to us. We vote
- on a recommendation for the U.S.'s vote, and then that goes
- back up the chain. The complications involve meeting
- schedules, voting deadlines and making sure no one inadver-
- tently says ``no.''
-
- The second area is implementing ECMA-167. I know of five
- implementation efforts; one commercial implementation is
- beta testing with customers. As a means of verifying our
- understanding of the standard, and as a way of improving the
- level of interchange, Hewlett-Packard organized a meeting on
- conformance testing for ECMA-167 in February in Fort Col-
- lins, CO. This was surprisingly popular, with about 30 com-
- panies attending. In brief, the meeting agreed to work on
- the areas of conformance testing, and the details of how to
- translate between conforming media and various operating
- systems' interfaces.
-
- The third area is addressing work for future standardiza-
- tion. This includes specific proposals for issues like
- compression, which ECMA-167 supports in a generic way, and
- proposals for niche targets with specific reliability and
- performance goals. This work is parallel to, and asynchro-
- nous with, the progress of DIS 13346. If anyone has
- specific proposals for things not adequately addressed in
- ECMA-167, they are invited to make them known to X3B11.1 (if
- you can't or don't want to attend meetings, I may be willing
- to be an advocate for you!); contact Ed Beshore for meeting
- details.
-
- Electronic_Distribution_of_Standards/Drafts
-
- Several X3B11.1 documents have been available electronically
- by both ftp and email (netlib) from research.att.com. (For
- ftp, login as netlib.) For details, get index from
- research/memo. The main documents are:
-
- - the standard itself (121 pages including TOC and
- index). (This is the actual standard as published;
- ECMA has approved its electronic distribution.)
-
- - a technical overview (12 pages). This gives a high
- level overview but has significant technical content.
-
- - a programmer's guide (20 pages). A low level guide
- through the standard from a C programmer's point of
- view. It gives you enough details to design an imple-
- mentation and do most of the implementation.
-
- Finale
-
- If you would like more details on X3B11.1's work, you should
- contact either me (andrew@research.att.com, 908-582-6262) or
- the committee chair, Ed Beshore (edb@hpgrla.gr.hp.com, 303-
- 350-4826).
-
- The next two meetings are in Tucson in mid-March and Long
- Island in mid-July. Anyone interested in attending should
- contact Ed Beshore.
-
-
- Volume-Number: Volume 30, Number 97
-
-