iSCSI: Response codes in SCSI Response Command

To: "'Julian Satran'" <julian_satran@il.ibm.com>, "'ISCSI'" <ips@ece.cmu.edu>, "'Mark Bakke'" <mbakke@cisco.com>, "'Ralph Weber'" <ralphoweber@compuserve.com>

Subject: iSCSI: Response codes in SCSI Response Command

From: "Sanjeev Bhagat (TRIPACE/Zoetermeer)" <sbhagat@tripace.com>

Date: Mon, 11 Jun 2001 18:10:26 +0200

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Sender: owner-ips@ece.cmu.edu

Current definition states

2.4.2 Status/Response

The Status field is used to report the SCSI status of the command (as specified in [SAM2]). The Response is used to report a Service Response. The exact mapping of the iSCSI response codes to SAM service response symbols is outside the scope of this document. If a SCSI device error is detected while data from the initiator is still expected (the command PDU did not contain all the data and the target has not received a Data PDU with the final bit Set) the target MUST wait until it receives the a data PDU with the F bit set before sending the Response PDU.

Valid iSCSI Response codes are:

0x01 - Target Failure

0x02 - Delivery Subsystem Failure

0x03 - Unsolicited data rejected

0x04 - SNACK rejected

0x80-0xff - Reserved for Vendor-Unique Responses

DONT YOU THINK that these response codes be actually mapped in SAM document and be made as standard to be followed by any protocol. So iSCSI should also report the same responses as defined in SAM document.

Regards,

Sanjeev