Relation between the Initiator Task Tag and the execution state

[Rohit B <b_rohitb@yahoo.com>]

Section 2.2.2.1 says:

At the target, it is assumed that CmdSN is relevant
only while the 
command has not created any state related to its
execution (execution 
state); afterwards, CmdSN becomes irrelevant. Testing
for the execution 
state (represented by identifying the Initiator Task
Tag) is assumed 
to precede any other action at the target, and is
followed by ordering 
and delivery if no execution state is found or
delivery if an 
execution state is found.

What is the execution state? How does it relate to the
Intitator Task Tag if the task is a chain of commands?
and how can we use the Initiator Task Tag to find the
execution state of the command?

Regards
Rohit


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