Clearing ACA on CHECK CONDITION

Costa Sapuntzakis csapuntz at cisco.com
Thu Jun 1 14:59:16 PDT 2000


* From the T10 Reflector (t10 at t10.org), posted by:
* Costa Sapuntzakis <csapuntz at cisco.com>
*

On Thu, 1 Jun 2000, Monia, Charles wrote:

> > 
> 
> Hi Costa:
> 
> Here's my interpretation, for what it's worth:
> 
> I believe the previous ACA condition is replaced by a new condition caused
> by the error which gave rise to the most recent CHECK CONDITION status.  Of
> course, the Logical Unit's copy of the sense data from the previous
> condition is overwritten.

To clarify your interpretation, is the ACA replaced by a new ACA
condition? Or, if the ACA attribute command had NACA=0, is it replaced by
just a CA? Is the queue flushed according to the QERR bits?

The sense data being overwritten may not be a problem for transports
with auto-sense.

-Costa


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