Re: iSCSI: more on StatRN

[Stephen Bailey <steph@cs.uchicago.edu>]

> What probe rate on a waiting response without other confirmation of
> connection happening would you specify?

Upon further reflection I'm not sure I analyzed the situation
correctly.  I know you all think everything through completely before
you start typing, so you can just stone me right now for not doing the
same.

I don't see why free running keep-alives are necessary at all in
iSCSI.

Targets only care if the connection is lost when they are returning
something to the initiator.  Attempting to send anything from target
to initiator will detect a lost connection, so a keep-alive is not
necessary.

Initiators will maintain task timers on outstanding SCSI operations,
and when a task timer expires, whatever action the initiator performs
(Abort Task exchange, ping, whatever) will discover the lost
connection.  Again, no keep-alive is necessary.

Steph