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

["Matt Wakeley" <matt_wakeley@agilent.com>]

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.

> b) Using (2) allows the hosts to hint to the target that the previous
> session is now stale and thus triggers clean-up of stale session
> resources.

Rather than "hint", I think explicite cleaning up is better.

-Matt