Re: iSCSI: Question: ISID Rule?

["Mallikarjun C." <cbm@rose.hp.com>]

> I see. Then would you say that this is correct:

That's pretty close.  I would describe it as  -

ISID          TSID              CID                  Target action
new           non-zero           X                    fail the login ("session does
not exist")
new           zero                  X                    instantiate a new session
existing      zero                  X                    do session reinstatement
existing      valid                 new                 add a new connection to the
session
existing      valid                 existing            do connection reinstatement
existing      invalid                X                   fail the login ("session
does not exist")

(X: don't care)
--
Mallikarjun

Mallikarjun Chadalapaka
Networked Storage Architecture
Network Storage Solutions Organization
Hewlett-Packard MS 5668
Roseville CA 95747

----- Original Message -----
From: "Luben Tuikov" <luben@splentec.com>
To: "iSCSI" <ips@ece.cmu.edu>
Sent: Friday, March 08, 2002 1:44 PM
Subject: Re: iSCSI: Question: ISID Rule?


> John Hufferd wrote:
> >
> > Not exactly.
> >
> > There is a CID in the equation also.  if TSID is not 0, and assuming other
> > things match, the CID will be used to determine if this is an implicit
> > logout and re-login for that connection.  If the CID is unique within the
> > session, then it will start a new session, else, it will log out the old
> > connection and create a new one.  Then of course, you need to use the Task
> > Management Request PDU, on the new connection to move the allegiance of the
> > existing tasks (one at a time) from the old connection to the new
> > connection.
>
> I see. Then would you say that this is correct:
>
> ISID TSID CID       Action
> ---------------------------------
>  V    0    U      New Session.
>  P    0    0      Session Reinstatement.
>  P    P    U      Add a connection to a session.
>  P    P    P      Connection reinstatement.
>
> Legend:
> 0    NULL, i.e. 0.
> V        Valid.
> P        Present.
> U        Unique at target.
>
> Table 1: iSCSI Target with just a single Portal Group.
>
> --
> Luben Tuikov, Senior Software Engineer, Splentec Ltd.
> Bus: +1-905-707-1954x112, 9-5 EST. Fax: +1-905-707-1974.
>