sbc3r24 referrals clarifications

Hannes Reinecke hare at
Wed Sep 8 02:52:45 PDT 2010

* From the T10 Reflector (t10 at, posted by:
* Hannes Reinecke <hare at>
Penokie, George wrote:
> Hannes,
> 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
allocation length.
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
remaining reserved.
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
application scenarios.
Thanks for your time.
Dr. Hannes Reinecke		      zSeries & Storage
hare at			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
* For T10 Reflector information, send a message with
* 'info t10' (no quotes) in the message body to majordomo at

More information about the T10 mailing list