Re: LUN field in R2T

[dcuddihy@xxxxxxxxxxxx]

Hi Bill,

I know from experience that some initiators
will fill in the LUN field in the data out with the actual LUN specified
in the SCSI write.  

While that may not be compliant with
10.8.5, you may see interop problems if you're depending on the initiator
to echo that LUN back to you.


regards,

david


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David J Cuddihy
Principal Engineer
ATTO Technology, Inc.
(716) 691-1999 x157 

www.attotech.com
Power Behind the Storage

Sears_Bill@xxxxxxx

01/02/2008 01:28 PM

To	<ips@xxxxxxxx>
cc
Subject	LUN field in R2T

Just a quick clarification:
 
10.8.5.  Target Transfer Tag
[...]The Target Transfer Tag and LUN are
copied in the outgoing data PDUs and are only used by the target.
 
Does this mean that the LUN field in the
R2T does not need to contain the actual LUN number specified by the SCSI
write?   Since the field is “only used by the target” I assume this
text means that the target may place anything it wants in the LUN field
of the R2T and have it echoed back by the initiator.
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