Date: Tue, 18 Mar 2008 20:31:37 -0500
From: Ralph Weber <roweber@IEEE.org>
To: t10@t10.org
Subject: Re: Comments on: CbCS 'correction' proposals
X-Message-Number: 8624
Formatted message: HTML-formatted message

Sivan, George,
Yes, I believe we agreed to effectively make the descriptor
byte count even by adding a reserved byte.
I am still pondering whether to add the byte inside
or outside the descriptor ... with outside meaning
in the CDB definition and in the Capability definition.
I am concerned that the Capability format does not
include a Format Type field. Instead, this is in
the Credential (which means it is not a part of
the Extended CDB Descriptor definition).
The presence of a reserved byte in the Capability
tempts me to use it (or a nibble of it) for the
Capability format. I need to wrestle with this
before solidifying my inside/outside position.
All the best,
.Ralph
Penokie, George wrote:
> Ralph,
>  
> I seem to remember saying in the meeting last week that we decided we
> were going to make the MAM thing an even byte count. Or am I thinking of
> a different odd byte thing.
>
> Bye for now, 
> George Penokie
>  
> LSI Corporation 
> 3033 41st St. NW 
> Suite 100 
> Rochester, MN 55901
>  
> 507-328-9017 
> george.penokie@lsi.com
>
>
> -----Original Message-----
> From: owner-t10@t10.org [mailto:owner-t10@t10.org] On Behalf Of Sivan
> Tal
> Sent: Tuesday, March 18, 2008 1:47 PM
> To: Ralph Weber
> Cc: owner-t10@t10.org; 't10@t10.org'
> Subject: Re: Comments on: CbCS 'correction' proposals
>
> * From the T10 Reflector (t10@t10.org), posted by:
> * Sivan Tal <SIVANT@il.ibm.com>
> *
> Ralph,
>
> That makes the RECEIVE CREDENTIAL CDB a potentially odd length CDB.
>
> If you append a single reserved byte at the end of 'Table x6 - CbCS
> logical unit and volume credential request descriptor' (in 08-145r0) it
> makes the CDB even length, and also aligns the Capability descriptor to
> be even length.
> This is just one way to deal with it, assuming odd length CDB is not
> welcome.
>
> - Sivan.
>
>
>
>  
>
>	       Ralph Weber
>
>	       <roweber@IEEE.org
>
>	       >
> To 
>	       Sent by: 		 "'t10@t10.org'" <t10@t10.org>
>
>	       owner-t10@t10.org
> cc 
>  
>
>  
> Subject 
>	       03/10/2008 06:49 	 Re: Comments on: CbCS
> 'correction'	
>	       AM			 proposals
>
>  
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>  
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> * From the T10 Reflector (t10@t10.org), posted by:
> * Ralph Weber <roweber@ieee.org>
> *
> Sivan Tal wrote:
>   
>> I confirm the new revision addresses those comments, thanks.
>>
>> A couple of typo/editorial:
>> 1) In 6.19.1.2 and in 6.19.1.3 where you say "as show in" it should be
>>     
> "as
>   
>> shown in"
>>
>>     
> These corrections appear in:
>
> http://www.t10.org/ftp/t10/document.08/08-128r2.pdf
>   
>> 2) Table x3 - the last byte shoud be at offset 55 instead of 56 (we 
>> start counting at 0).
>>
>>     
> The problem here is that the specified MAM attribute (0401h MEDIUM
> SERIAL NUMBER) has a length of 37 bytes, specifically 32 bytes of serial
> number plus 5 bytes of header.
>
> N.B. This means a 36-byte CbCS designation descriptor field is not large
> enough to hold it. (I just realized this myself, and have not yet
> decided how to fix it.)
>
> All the best,
>
> .Ralph
>
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