Re: iSCSI state transitions question

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

Sorry, the sentence below:

>S13 is reached either through S19-* transitions, or S20-*....

should have read:

S13 is reached either through T19-* transitions, or T20-*....

BTW, the iSCSI state diagrams pdf file is now posted on Julian's
website.
--
Mallikarjun 


Mallikarjun Chadalapaka
Networked Storage Architecture
Network Storage Solutions Organization
MS 5668	Hewlett-Packard, Roseville.
cbm@rose.hp.com

>Sanjay,
>
>You are right to the extent that S1 and S13 are similar
>since neither has a valid associated transport connection,
>but they differ in if active iSCSI tasks could possibly be 
>associated with the state.  S1 can not have any unfinished 
>tasks, while S13 may.
>To quote 6.1 -
>        The BUSY state (S13) implies that there are possibly 
>        iSCSI tasks that have not reached conclusion and are 
>        still considered busy.
>
>S13 is reached either through S19-* transitions, or S20-* 
>transitions, both of which happen without a clean iSCSI Logout
>hence the possibility of unfinished iSCSI tasks.
>
>To quote 6.1 again -
>        Whenever a connection state machine (say, CSM-R) enters 
>        the BUSY state (S13), it must go through the state transitions
>        additionally described in the connection recovery state 
>        diagram.
>
>The above is to eventually get to S1.
>
>Please review the pdf file I posted to this list as well 
>which additionally contains a graphical representation of standard 
>connection state diagram.
>
>Regards.
>-- 
>Mallikarjun
>
>
>Mallikarjun Chadalapaka
>Networked Storage Architecture
>Network Storage Solutions Organization
>Hewlett-Packard Roseville
>cbm@rose.hp.com
>
>
>Sanjay Goyal wrote:
>> 
>> Hi
>>  It is regarding Rev7.0,
>>    6.1 Standard connection state diagram
>> 
>>   The transition condition from S12 to S13 seems illogical to me. After both
>> sides close the connection, should not the state be S1.
>>   to me either the condition T18 is not correct or the transition to S13 is
>> not correct.
>>  Please clarify the issue.
>> 
>> Regards
>> Sanjay Goyal
>> 
>> 
>> -----Original Message-----
>> From: Julian Satran [mailto:Julian_Satran@il.ibm.com]
>> Sent: Friday, July 20, 2001 4:38 AM
>> To: internet-drafts@ietf.org
>> Cc: bassoon@YOGI.PDL.CMU.EDU; ips@ece.cmu.edu
>> Subject: new iSCSI draft 07.txt
>> 
>> On  behalf of a group of authors from several organizations as part of the
>> IPS working group  I submit a revision of an IETF-draft for immediate
>> publication. It specifies iSCSI - a SCSI Over TCP protocol and the file
>> name is "draft-ietf-ips-iSCSI-07.txt".  It completely replaces
>> "draft-ietf-ips-iSCSI-06.txt".
>> 
>> The draft can be found at:
>> 
>> http://www.haifa.il.ibm.com/satran/ips/draft-ietf-ips-iSCSI-07.txt
>> 
>> Julian Satran - IBM Research Laboratory at Haifa
>