Re: iSCSI: response to second login (with same ISID)

[Santosh Rao <santoshr@cup.hp.com>]

Matt Wakeley wrote:
> 
> Santosh Rao wrote:
> 
> > In the event where the initiator went through a non-orderly shutdown
> > which did not close all sessions, it would attempt to re-login on
> > re-boot with the same ISID. If the target rejected this re-login, per
> > (1) (citing an invalid ISID), the initiator would no longer be able to
> > maintain persistence of the session to an ISID.
> 
> In this case, the initiator is at fault (it performed a non-orderly
> shutdown).  Hence, when it logs in with the target, the target comes back and
> says, "bad initiator, you're already logged in with me".  The initiator can
> then say "oh yeah, ok, let's clean up" and perform an orderly shutdown of the
> session.

One problem with the above approach. Once the initiator has rebooted, it
has no way of cleaning the old session, since a session logout has to be
sent within the same set of TCP connections that the session was
operating on. There is no provision to logout a session from a newly
established set of TCP connection[s] for a new session upon the host's
bootup.
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