sbc3r24 referrals clarifications
George.Penokie at lsi.com
Wed Sep 8 08:41:49 PDT 2010
* From the T10 Reflector (t10 at t10.org), posted by:
* "Penokie, George" <George.Penokie at lsi.com>
The allocation length field size for REPORT REFERRALS is currently 4 bytes.
Although, I get the point of your comment. There is no good reason why the
size of the USER DATA SEGMENT REFERRAL DESCRIPTOR LENGTH field is only 2
bytes, that was the size that the people who wanted the feature were happy
with. If you would like to expand it to 4 bytes then you will have to bring
in a proposal to the SCSI committee for such a change.
Bye for now,
3033 41st St. NW
Rochester, MN 55901
george.penokie at lsi.com
From: Hannes Reinecke [mailto:hare at suse.de]
Sent: Wednesday, September 08, 2010 4:53 AM
To: Penokie, George
Cc: t10 at t10.org
Subject: Re: sbc3r24 referrals clarifications
Penokie, George wrote:
> The statement would have been more clear stated as:
> The user data segment referral descriptor (see table 10) is defined in the
user data segment referral sense data descriptor.
> The format of the user data segment referral descriptor that is used in the
REPORT REFERRALS parameter data is defined in table 10.
Thanks for your clarification.
There is actually another point wrt referrals:
The REPORT REFERRALS command allows you to specify up to 8 bytes of
Yet the parameter data returned allow you to specify only up to _2_
bytes for returned data (namely byte 2 & 3), with the top 2 bytes
Shouldn't those two numbers be aligned?
I would actually prefer to lower the size for the allocation length
to 4 bytes and raise the size for the parameter size to 4 bytes.
Otherwise the standard would impose quite a limitation on
the number of possible user segments, making it unusable for some
Thanks for your time.
Dr. Hannes Reinecke zSeries & Storage
hare at suse.de +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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