Re: iSCSI: Parameter negotiation Q

[Paul Koning <pkoning@equallogic.com>]

>>>>> "Michael" == Michael Schoberg <michael_schoberg@cnt.com> writes:

 Michael> I understand we're past the revision stage on iSCSI, but I'm
 Michael> confused by some of the negotiation logic.  If
 Michael> FirstBurstLength only relates to the number of bytes
 Michael> Initiator->Target, why would there be a need to negotiate
 Michael> the value versus just having the target declare a maximum
 Michael> (if not equal to the default)?

The initiator is required to send exactly FirstBurstLength if it sends
non-immediate unsolicited data (unless the total length of the write
is less) -- section 2.2.4.2.  The target wants to know what that
length will be so it can plan buffering accordingly.  Not all targets
will care, but some will (that's why the rule is there).

     paul