sun
   microsystems              Systems Architecture Committee

_________________________________________________________________

Subject:       COMSTAR: Common Multiprotocol SCSI Target

Submitted by:  Sumit Gupta

File:          PSARC/2007/523/opinion.ms

Date:          February 20th, 2008

Committee:     Mark  Carlson  (opinion   written   by   Rick
               Matthews), Glenn Skinner

Product Approval Committee:
               Solaris PAC
               solaris-pac-opinion@sun.com

1.  Summary

COMSTAR is a software framework that enables a Solaris  host
to be used as a SCSI target platform.

2.  Decision & Precedence Information

The project is approved as specified in reference [1].

The project may be delivered in a patch release of  the  NWS
consolidation.

3.  Interfaces

The project exports the following interfaces.

__________________________________________________________________
|                      Interfaces Exported                       |
|__________________|_________________|___________________________|
|Interface         |  Classification |  Comments                 |
|__________________|_________________|___________________________|
|LU Provider       |  Committed      |  Implements  functionality|
|                  |                 |  of a SCSI LU.            |
|Port Provider     |  Committed      |  Implements  functionality|
|                  |                 |  of a SCSI Target port.   |
|stmf              |  Committed      |  Framework  functions  for|
|                  |                 |  LU   providers  and  port|
|                  |                 |  providers.               |
|ioctls for libstmf|  Project private|  Interface  between   stmf|
|                  |                 |  and libstmf.             |
|__________________|_________________|___________________________|

PSARC/2007/523               Copyright 2008 Sun Microsystems

                           - 2 -

The project imports the following interfaces.

__________________________________________________
|              Interfaces Imported               |
|___________|________________|___________________|
|Interface  |  Classification|  Comments         |
|___________|________________|___________________|
|Solaris DDI|  Committed     |                   |
|libstmf    |  Committed     |  From this project|
|libc       |  Committed     |                   |
|libsysevent|  Committed     |                   |
|libpthreads|  Committed     |                   |
|libscf     |  Committed     |                   |
|___________|________________|___________________|

4.  Opinion

The committee stipulated that the FMA ereport definitions be
provided.  Since  inception, the project team has determined
that there  is  already  work  ongoing  to  define  FMA  for
storage.   A  response to this issue can be found in full at
reference [2].

The committee approved without commitment review  after  the
stipulation was satisfied, and a draft opinion written.

5.  Minority Opinion(s)

None.

6.  Advisory Information

None.

7.  Appendices

7.1.  Appendix A: Technical Changes Required

None.

7.2.  Appendix B: Technical Changes Advised

None.

7.3.  Appendix C: Reference Material

Unless otherwise stated, all path names are relative to  the
case directory (PSARC/2007/523).

1.   commit.materials/libstmf_v1.pdf
     commit.materials/stmf_interface_spec.pdf
     commit.materials/stmfadm.pdf
     inception.materials/20Q.txt

PSARC/2007/523               Copyright 2008 Sun Microsystems

                           - 3 -

2.   commit.materials/jdc-2.response
     commit.materials/comstar.portfolio-p0
     See also: PSARC/2007/388 - Generic Topology for  Inter-
     nal Disks (FMA portfolio)

3.   Supplementary materials
     inception.materials/smf_service_props.txt
     inception.materials/Security.txt

PSARC/2007/523               Copyright 2008 Sun Microsystems