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- Path: sparky!uunet!not-for-mail
- From: stephe@usenix.org (Stephen R. Walli)
- Newsgroups: comp.std.unix
- Subject: Standards Update, POSIX.7b: Software Administration
- Date: 29 Dec 1992 14:26:04 -0800
- Organization: USENIX Standards Watchdog Committee
- Lines: 79
- Sender: sef@ftp.UU.NET
- Approved: sef@ftp.uucp (Moderator, Sean Eric Fagan)
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-
- Submitted-by: stephe@usenix.org (Stephen R. Walli)
-
- Esti Koen <emk@cray.com> reports on the October 19-23, 1992 meeting in
- Utrecht, NL:
-
- I attended the POSIX.7b meeting in Utrecht, never having been
- previously exposed to POSIX. Lacking the historical perspective, it
- was difficult for me to identify when the discussion was a
- clarification of an already agreed upon point verses a major shift in
- emphasis or direction. If this report seems somewhat lacking in
- detail or introductory, it reflects my own level of involvement to
- date.
-
- For the purpose of this report, I assume readers are mainly interested
- in broad decisions concerning the content of the standard or a shift
- in direction and expected balloting dates.
-
- Early attempts to standardize the nonexistant ``common practice'' of
- software administration seemed doomed to failure. (I don't envy those
- early pioneers.) POSIX.7 finally adopted the network view of a managed
- system. Forging ahead in areas where they feel they can make
- consensus based progress, POSIX.7 is now split into two documents
- called POSIX.7a (print queue administration) and POSIX.7b (software
- administration).
-
- Recognizing the need for information describing existing practice in
- the area of network wide system management, the Open Software
- Foundation (OSF) solicited technologies from industry that could be
- integrated to simplify system management in heterogeneous computing
- environments. In October, 1991, OSF announced that they had chosen
- Hewlett Packard's Software Distribution Utilities to provide the basis
- for the OSF Distributed Management Environment (DME). The current
- draft of POSIX.7b is a roughly one year old descendant of the External
- Specification that describes the HP Software Distribution Utilities.
-
- The original HP implementation suggested an object orientation but it
- was not developed using a rigorous object oriented specification
- language. In one year of POSIX meetings the group has made
- significant progress in further defining the attributes of the managed
- objects, but the specification is still incomplete and at times
- ambiguous. There is much discussion concerning object behavior.
-
- Open issues include the question of allowing multiple Management
- Information Bases (MIB), and which attributes of a software object can
- be used, and how they are used as a selection mechanism.
-
- Although invention by a standards committee is not advisable, it seems
- unavoidable when the base design is incomplete for the purposes of the
- standard.
-
- Several decisions regarding general content were finalized. There
- will be no API included in the standard. An informative annex which
- provides information on how one implementation communicates between
- the manager, source and target roles will be included. A rationale
- section which informs the reader as to the intent and history of the
- standard will also be included.
-
- The serial media format was previously specified as tar, but will now
- be specified as being readable and writable by pax (POSIX.2-1992).
- Locking mechanisms are considered to be an implementation detail and
- outside the scope of the standard. A command line option will be
- provided to permit interaction sufficient to handle multi-volume media.
-
- The group discussed rewriting part of the document using the ISO
- Guidelines for the Definition of Managed Objects (GDMO). The process
- of rewriting using GDMO would have the beneficial side effect of
- highlighting inconsistencies, omissions, and redundancies. In fact,
- it was advised that the draft would not be adopted by ISO unless GDMO
- was used.
-
- The active participants did not embrace the idea whole heartedly
- because a drastic structure change could further delay the balloting
- schedule. Mock ballot is planned to occur after the January meeting.
- Budget constraints may impose a time limit on the standards activity,
- and active participants fear having the POSIX.7b standards activity
- permanently interrupted before going to ballot. Refinement of the
- existing object definitions and behaviors continues at a fast pace.
-
- Volume-Number: Volume 30, Number 12
-