SSC/SMC Working group mtg. X3T10/96-115 r0

Erich Oetting erich_oetting at
Mon Jan 15 09:30:52 PST 1996

* From the SCSI Reflector, posted by:
* <erich_oetting at (Erich Oetting)>
Minutes of SSC/SMC Working Group mtg.
X3T10/96-115 r0
Dallas, TX.

Accredited Standards Committee
X3, Information Technology

To:         Membership of X3T10

From:       Erich Oetting

Subject:    Minutes of SSC/SMC Working Group Meeting
            Dallas, TX.  January 11, 1996


1. Opening Remarks

2. Approval of Agenda

3. Attendance and Membership

4. SSC Topics
4.1 - Aborting stream devices and recovery.
4.2 - Block Size Granularity.
4.3 - Write filemark immediate wording.
4.4 - Reserve/Release for Comm. Devices.

5. SMC Topics.
5.1 - Write Protect in Media Changers

6.   Other Topics
7.   Meeting Schedule
8.   Adjournment

                              Results of Meeting

1.    Opening Remarks

Ted Lappin, the SSC Technical Editor, called the meeting to order at 9:15 a.m.,
Thursday, September 14, 1995.  He thanked Quantum for arranging and hosting
the meeting.

As is customary, the people attending introduced themselves and a copy of
the attendance list was circulated.

The draft agenda was approved.

3.    Attendance and Membership

Attendance at working group meetings does not count toward minimum
attendance requirements for X3T10 membership.  Working group meetings
are open to any person or organization directly and materially affected by
X3T10's scope of work.

The following people attended the meeting:

     Name                S   Organization             Email Address
----------------------  --   ---------------------    --------------
Mr. Erich Oetting        P  Storage Technology     erich_oetting at
Mr. Charles Monia           DEC                    monia at

Mr. Edward Lappin        P  Exabyte Corp.          tedl at
Mr. Ralph Weber             ENDL Associates        roweber at
Mr. John Lohmeyer           Symbios
john_lohmeyer at
Mr. Larry Lamers            Adaptec                ljlamers at

6 People Present

Status Key:          P    -  Principal
                     A,A# -  Alternate
                     O    -  Observer
                     L    -  Liaison
                     V    -  Visitor

4.   SSC Topics

4.1 - Abort of Stream Devices and recovery.

Ted has added language to SSC attempting to describe what happens when a
write operation is aborted.  Ralph pointed out that Ted may be restricting
behavior too much with his current wording, and many devices may not be
able to perform as described.

Ted will work on wording in the model or write command to indicate that a
read position or rewind command should be used to establish position on
tape before proceeding.   (Read position may return position unknown in
some cases.) How to handle a partial record when writing directly to media
was also discussed.

4.2 - Write filemark immediate wording.

A discussion was held about the what the current wording of write filemark
immediate actually requires.  No change will be made to the document.

4.3 - Block Size Granularity.

Ted presented his proposal to allow a SCSI tape to report that only some
block sizes are not supported via the Read Block Limits command.  Ted will
bring this proposal up for a vote at the next Plenary.

4.4 - Reserve/Release for Comm. Devices.

Ted asked if Reserve/Release is needed for Comm devices.  He will attempt
to start a discussion on the SCSI reflector.

5.    SMC Topics.

5.1 - Write protect in Media Changer Model.

Erich proposed that a Media Changer should be able to write protect media
when moving it to a transport, by setting a bit in the Move Media or
Exchange Media command.  The working group agreed that this would be
desirable. A specific proposal will be brought to the next meeting.

6.   Other Topics

No other topics were discussed.

7.    Meeting Schedule

The next meeting of the SSC/SMC Working Group will be in San Diego, hosted
by QLogic.  Actual meeting time will be determined by the X3T10 Plenary.

8.    Adjournment

The meeting was adjourned at 11:03 a.m. on Thursday Jan. 11, 1996.

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