Re: Connection Recovery in case of a single connection in a session

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

----- Original Message ----- 
From: <Black_David@emc.com>
To: <monishabarooah@myrealbox.com>; <ips@ece.cmu.edu>
Sent: Friday, May 10, 2002 11:46 AM
Subject: RE: Connection Recovery in case of a single connection in a session


> This recovery requires the ability to support more than one
> connection in a session.  Once the first connection is logged
> out, its tasks are gone.  An implementation that does not
> support multi-connection sessions cannot do this sort of
> recovery.

Not quite accurate.  A single-connection session could do 
task reassignment.  A connection reinstatement (same CID)
login (when operational ErrorRecoveryLevel=2) would be 
an implicit recovery Logout.  The initiator has the option
either to reassign the tasks, or simply let the tasks timeout
(or even abort the non-allegiant tasks).

New wording regarding the mapping of session/connection
reinstatements to Logout reason codes was posted to this 
list two weeks ago (by me), and will appear in rev13.
--
Mallikarjun

Mallikarjun Chadalapaka
Networked Storage Architecture
Network Storage Solutions
Hewlett-Packard MS 5668 
Roseville CA 95747
cbm@rose.hp.com


> 
> > -----Original Message-----
> > From: Monisha Barooah [mailto:monishabarooah@myrealbox.com]
> > Sent: Friday, May 10, 2002 5:46 AM
> > To: ips@ece.cmu.edu
> > Subject: Connection Recovery in case of a single connection 
> > in a session
> > 
> > 
> > 
> >  Hi All,
> >   I wanted to know how to perform Connection Recovery for a 
> > connection when it is the only connection of a session. 
> > 
> >  Connection Recovery invloves the logout of the failed 
> > connection and the reassignment of the tasks of the failed 
> > connection to a full feature phased connection.
> > 
> > In case there is only one connection in a session. How do we 
> > do the Connection Recovery? Shall we open up another 
> > connection to do implicit logout? But in this case the CID of 
> > the new connection will be the same as that of the failed 
> > connection and the task reassignment will not come into 
> > picture at all.
> > 
> > Regards,
> > Monisha.
> > 
>