[T11.3] Re: FC-FS: REC to revert to ELS

Charles Monia cmonia at NishanSystems.com
Wed Aug 14 13:48:02 PDT 2002


* From the T10 Reflector (t10 at t10.org), posted by:
* Charles Monia <cmonia at NishanSystems.com>
*
Hi:

For the reasons given by John, 'obsolete' sounds good to me too.

rgds,
Charles
> -----Original Message-----
> From: John Tyndall [mailto:jtyndall at crossroads.com]
> Sent: Wednesday, August 14, 2002 10:50 AM
> To: Nixon, Bob; cmonia at NishanSystems.com; Kevin D Butt
> Cc: T10 Reflector (E-mail); T11 Reflector (E-mail)
> Subject: RE: [T11.3] Re: FC-FS: REC to revert to ELS
> 
> 
> * From the T10 Reflector (t10 at t10.org), posted by:
> * "John Tyndall" <jtyndall at Crossroads.com>
> *
> Obsolete sounds much better than vendor specific. After all 
> it did have a definition for some period of time that people 
> actually implemented. I wouldn't want the code re-used for 
> other purposes under the argument that it's vendor specific 
> so it can be treated anyway a vendor chooses.
> 
> John Tyndall
> Architect
> Crossroads Systems Inc.
> Email  : jtyndall at crossroads.com
> Phone : 512-928-7282
> 
> 
> -----Original Message-----
> From: Nixon, Bob [mailto:Bob.Nixon at Emulex.Com] 
> Sent: Wednesday, August 14, 2002 12:30 PM
> To: John Tyndall; cmonia at NishanSystems.com; Kevin D Butt
> Cc: T10 Reflector (E-mail); T11 Reflector (E-mail)
> Subject: RE: [T11.3] Re: FC-FS: REC to revert to ELS
> 
> 
> If we make the change in FCP-2, we probably should leave the 
> REC FC-4 LS code "vendor specific".  If we defer the change 
> until FCP-3, it would become "obsolete".  In either case, it 
> could not be re-used for any standard purpose.  Does that 
> take care of the problems?
> 
>    - Bob
> 
> -----Original Message-----
> From: John Tyndall [mailto:jtyndall at Crossroads.com]
> Sent: Tuesday, August 13, 2002 6:48 AM
> To: cmonia at NishanSystems.com; Kevin D Butt; Nixon, Bob
> Cc: T10 Reflector (E-mail); T11 Reflector (E-mail)
> Subject: RE: [T11.3] Re: FC-FS: REC to revert to ELS
> 
> 
> It would be a good idea not to reassign the encoding, since 
> reassignment could greatly complicate life for targets.
> 
> John Tyndall
> Architect
> Crossroads Systems Inc.
> Email  : jtyndall at crossroads.com
> Phone : 512-928-7282
> 
> 
> -----Original Message-----
> From: Charles Monia [mailto:cmonia at NishanSystems.com] 
> Sent: Monday, August 12, 2002 7:05 PM
> To: 'Kevin D Butt'; Nixon, Bob
> Cc: T10 Reflector (E-mail); T11 Reflector (E-mail)
> Subject: [T11.3] Re: FC-FS: REC to revert to ELS
> 
> 
> INCITS T11.3 Mail Reflector
> ********************************
> Nit:
> 
> If implementations treat REC as either an FC-4 or extended 
> link service, does that imply the FC-4 encoding should never 
> be reassigned?
> 
> Charles
> 
> > -----Original Message-----
> > From: Kevin D Butt [mailto:kdbutt at us.ibm.com]
> > Sent: Friday, August 09, 2002 5:22 PM
> > To: Nixon, Bob
> > Cc: owner-t10 at t10.org; T10 distribution (E-mail); T11. 3 
> Distribution
> > (E-mail)
> > Subject: Re: FC-FS: REC to revert to ELS
> > 
> > 
> > * From the T10 Reflector (t10 at t10.org), posted by:
> > * "Kevin D Butt" <kdbutt at us.ibm.com>
> > *
> > 
> > IBM Tape devices, Magstar 3590 and LTO Ultrium 358x devices have
> > implemented the response REC as an FC4 Link Service.  We have also 
> > implemented our response to REC as an ELS.  We will respond in 
> > whatever manner the host makes the request,  either FC4 Link Service
> > Response or ELS
> > Response.  We do not issue a REC Request.
> > 
> > Kevin D. Butt
> > Fibre Channel & SCSI Architect
> > IBM Tape Microcode,
> > 6TYA, 9000 S. Rita Rd., Tucson, AZ  85744
> > Tie-line 321; Office: 520-799-5280, Lab: 799-2869, Fax: 799-4138, 
> > Email: kdbutt at us.ibm.com
> > 
> > 
> >                                                               
> >                                                           
> >                       "Nixon, Bob"                            
> >                                                           
> >                       <Bob.Nixon at emulex        To:       
> > "T11. 3 Distribution (E-mail)" <t11_3 at mail.t11.org>, "T10      
> >                       .com>                     distribution 
> > (E-mail)" <t10 at t10.org>                                    
> >                       Sent by:                 cc:            
> >                                                           
> >                       owner-t10 at t10.org        Subject:  
> > FC-FS:  REC to revert to ELS                                   
> >                                                               
> >                                                           
> >                                                               
> >                                                           
> >                       08/09/2002 03:13                        
> >                                                           
> >                       PM                                      
> >                                                           
> >                                                               
> >                                                           
> >                                                               
> >                                                           
> > 
> > 
> > 
> > This message is to inform the community of the decision of the FC-FS
> > working group to
> >       reestablish the Read Exchange Concise Extended Link Service as
> >       defined in FC-FS version 0.30 (T11/00-340v1, July 2000);
> >       recommend to T10 that, circumstances permitting, FCP-2
> > be revised to
> >       reflect REC as an Extended Link Service rather than 
> an FC-4 Link
> >       Service; and
> >       recommend to T10 that, should it be impractical to 
> revise FCP-2,
> >       FCP-3 be written to reflect REC as an ELS rather than 
> > an FC-4 Link
> >       Service, and implementers of FCP-2 be advised to 
> > diverge from the
> >       published standard in the same manner.
> > This decision was motivated by the understanding of all 
> > present that the
> > behavior proposed reflects the actual implementation of all 
> > products using
> > REC.  The community is solicited to advise the T11.3 distribution (
> > t11_3 at mail.t11.org) of contact information for any products known to
> > implement the REC FC-4 Link Service as defined in the current 
> > version of
> > the FCP-2 specification.
> > 
> >    - Bob Nixon, FC-FS working group secretary
> > 
> > 
> > 
> > 
> > *
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> > 
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