Re: iSCSI acknowledgment mechanism

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

Ron,

ExpStaSN acknowledges status.  This is per connection and since status and 
data for a task have allegiance to one connection acknowledging status 
implicitly acknowledges data.

Data are counted per command - and A refers only to a given command - and 
so does the dataACK.

Julo




Ron Grinfeld <Rong@siliquent.com>
Sent by: owner-ips@ece.cmu.edu
07-11-01 08:36
Please respond to Ron Grinfeld

 
        To:     "'ips@ece.cmu.edu'" <ips@ece.cmu.edu>
        cc: 
        Subject:        iSCSI acknowledgment mechanism

 

                 Hello,
                 After monitoring the Q&A resulting from the UNH I'm a 
little puzzled
and in need for some clarifications:
                 1. Does the ExpStatSn acknowledges the status received on 
a task and
all its data PDUs (not only the receive of the status itself) ?
                                 If so then the ExpStatSn is incremented 
only after receiving
all the Data-In PDUs and the related status.
                 2. Does the 'A' bit in the Data-In PDUs relates only to 
data sent on
a specific task (triggered by the target when sending long bursts of 
Data-In
PDUs relating to the same task) and the SNACK response with type DataACK
(positive acknowledge of Data-In PDUs) acknowledges this specific task as
well ?

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