Re: iSCSI: current UNH Plugfest

[Santosh Rao <santoshr@cup.hp.com>]

Robert Snively wrote:
> 
> Sense Data will never be generated in a data segment to any command except
> REQUEST SENSE.  In that case, CHECK CONDITION will never
> be indicated unless the REQUEST SENSE command failed in
> some way, and (if autosensing is used), the CHECK CONDITION
> will be associated with its own set of sense information in
> the response PDU.

The SCSI sense data is contained in the data segment of the SCSI
Response pdu. Hence, it is possible for the initiator to receive the
header of the scsi response pdu containing the SCSI Status, but not the
data segment (sense data) of the scsi response pdu, due to a data digest
error. 

- Santosh

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Santosh Rao
Software Design Engineer,
HP-UX iSCSI Driver Team,
Hewlett Packard, Cupertino.
email : santoshr@cup.hp.com
Phone : 408-447-3751
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