Re: iSCSI: Concerns raised about ACA and denial of service conditions

[Ralph Weber <ralphoweber@compuserve.com>]

Julian,

> Isn't the behavior you describe being controlled by the 
> TST (and QErr) field from the Control Mode Page (SPC2)
> and the value of 001 insures that an ACA condition caused 
> by one initiator does not cause tasks from another 
> initiator be rejected?

The behavior I described assumes TST=000, which I consider
to be the default case.  QErr affects whether pending tasks 
are terminated when an error occurs, so I do not think QErr
applies here.

Note that TST=001 affects more than just the error behavior.
If TST=001, then ORDERED tasks from one initiator are not
coordinated with ORDERED tasks from other initiators.  ABORT
TASK SET only the tasks from one initiator making it the
same as CLEAR TASK SET.  These behaviors could be viewed as 
undesirable.

Thanks.

Ralph...