Re: LUN field in R2T

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



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01/02/2008 01:28 PM

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[Ips] 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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