iSCSI: Text Request ITT/TTT

["Eddy Quicksall" <Eddy_Quicksall@ivivity.com>]

Section 3.10.2 Initiator Task Tag says:

 If the command is sent as part of a sequence of text requests and
 responses, the Initiator Task Tag MUST be the same for all the
 requests within the sequence (similar to linked SCSI commands).

Why is this restriction imposed? Since the Text Requests can't be
overlapped, then there is no need for this.

If this restriction must exist, then why doesn't it exist for the TTT as
well?

The target does not need to interpret the ITT and the initiator does not
need to interpret the TTT (or does it?).

By removing the restriction, the initiator could use the ITT as an
indication of where to pick up with the next Text Response for long text
exchanges. Also, the target could use the TTT the same way.

Eddy_Quicksall@iVivity.com