REQUEST SENSE LONG bit (01-199r3)

Gerry.Houlder at seagate.com Gerry.Houlder at seagate.com
Wed Feb 6 07:00:21 PST 2002


* From the T10 Reflector (t10 at t10.org), posted by:
* Gerry.Houlder at seagate.com
*

How about some compromise wording like this:

   "If LONG is set to one [in the REQUEST SENSE CDB]
   and the device server supports the long sense data format,
   the long sense data format shall be returned."

This would more explicitly state the proosal's intent.



                                                                               

                     Ralph 
Weber 

                     <ralphoweber at compu        To:     "T10, Reflector" 
<T10 at t10.org>
                     serve.com>                cc: 

                     Sent by:                  Subject:     REQUEST SENSE 
LONG bit (01-199r3)
                     owner-t10 at t10.org 

                                                                               

                                                                               

                     02/05/02 10:57 
AM 

                     Please respond 
to 

                     roweber 

                                                                               

                                                                               





* From the T10 Reflector (t10 at t10.org), posted by:
* Ralph Weber <ralphoweber at compuserve.com>
*
01-199r3 contains the following statement:

   "If LONG is set to one [in the REQUEST SENSE CDB],
   the long sense data format shall be returned."

This statement is not backwards compatible. If a
REQUEST SENSE CDB is sent to an SPC-2 device server
(to whom the LONG bit is reserved and need not be
tested), that device server will return the non-long
(current format) sense data, no if's and's or but's.

The above cite sentence is being "edited" to change
'shall' to 'should'.

The bottom line is that an application client that
is willing to accept long sense data is obligated
to check the response code in any sense data it
receives in order to verify the sense data format.

FYI

Ralph...




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