Re: iSCSI: A bit and followed by separate Status PDU

["Julian Satran" <Julian_Satran@il.ibm.com>]

It refers to both the S bit or a separate response. If the initiator processes a Response before it issues the SNACK it can act the same way as when status is embedded. Target frees resources if ExpStatSN passes over the status - Julo

Eddy Quicksall <eddy_quicksall@ivivity.com> Sent by: owner-ips@ece.cmu.edu 06/14/2002 04:47 PM Please respond to Eddy Quicksall

To:        ips@ece.cmu.edu         cc:                 Subject:        iSCSI: A bit and followed by separate Status PDU

9.7.2 says:

On receiving a Data-In PDU with the A bit set to 1, if there are no
holes in the read data until that Data-In PDU, the initiator MUST
issue a SNACK of type DataACK except when it is able to acknowledge
the status for the task immediately via ExpStatSN on other outbound
PDUs if the status for the task is also received; in this latter case
(acknowledgement through ExpStatSN) sending a SNACK of type DataACK
in response to the A bit is not mandatory but if it is done it must
not be sent after the status acknowledgement through ExpStatSN.

Regarding the "if the status for the task is also received" ... is that
referring to the S bit and A bit within the same PDU or is there some other
case I'm missing? 

Eddy
 <mailto:Eddy_Quicksall@iVivity.com> mailto:Eddy_Quicksall@iVivity.com