SPC Inquiry for Quad-Aligned Zero -- deprecated since SPC-4 maybe

Ralph Weber roweber at IEEE.org
Wed Jan 2 19:26:10 PST 2008


* From the T10 Reflector (t10 at t10.org), posted by:
* Ralph Weber <roweber at ieee.org>
*
Mark,
> ... The only possible clarification I can see is to explain
> a touch more about the reason for the five and four. ...
This of course assumes that some *reason* other than
"because the standard says so" is needed. :-)
All the best,
.Ralph
Mark Evans wrote:
> * From the T10 Reflector (t10 at t10.org), posted by:
> * "Mark Evans" <Mark.Evans at wdc.com>
> *
> Hi Pat,
>
> I'm not sure what you're trying to fix.  The only possible clarification I
> can see is to explain a touch more about the reason for the five and four.
> This could be done by adding a few words the paragraph you mention in 6.4.1
> INQUIRY command introduction as follows:
>
> The ALLOCATION LENGTH field is defined in 4.3.4.6.  If EVPD is set to zero,
> then the allocation length should be at least five so that the ADDITIONAL
> LENGTH field (i.e., byte 4 in the standard INQUIRY data) is returned
> providing the application client with the length of the data available (see
> 6.4.2).  If EVPD is set to one, then the allocation length should be should
> be at least four so that the PAGE LENGTH field (i.e., byte 3 or bytes 2 and
> 3 in a vital product data page) is returned providing the application
client
> with the length of the data in the specified VPD page (see 7.6).
>
> The cross references are already in the paragraph, but I guess a few more
> words wouldn't hurt.	Am I missing the issue that you're trying to resolve?
> Please let me know.
>
> Regards,
>
> Mark Evans
> Western Digital Corporation
> 5863 Rue Ferrari
> San Jose,  CA  95138
> Email: mark.evans at wdc.com
> Office: 408.363.5257
>
> -----Original Message-----
> From: owner-t10 at t10.org [mailto:owner-t10 at t10.org] On Behalf Of
> plavarre at lexar.com
> Sent: Wednesday, January 02, 2008 1:15 PM
> To: T10 at t10.org
> Subject: RE: SPC Inquiry for Quad-Aligned Zero -- deprecated since SPC-4
> maybe
>
> * From the T10 Reflector (t10 at t10.org), posted by:
> * <plavarre at lexar.com>
> *
> Here's one specific way we could correct the Spc4r11.pdf 6.4 Inquiry
> English:
>
>
> """The ALLOCATION LENGTH field is defined in 4.3.4.6. [+ The allocation
> length should be zero else at least four or five.] If EVPD is set to
> zero, the allocation length should be at least five, so that the
> ADDITIONAL LENGTH field in the parameter data (see 6.4.2) is returned.
> If EVPD is set to one, the allocation length should be [- should be] at
> least four, so that the PAGE LENGTH field in the parameter data (see
> 7.6) is returned."""
>
>
> Like it?
>
>
> The [+] change notation indicates text I think we should add. The [-]
> change notation indicates text I think we should subtract. The
> """quotes""" enclose the wrong I see in our 14 May 2007 Spc4r11.
>
>
> Right way to move forward?
>
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