Jim -
I appreciate the great SCSI information.
The hang is not at all frequent.
I do resets many times during a programming
session as my "marvelous" code hangs or otherwise
goes crazy and into thew weeds :) and I only
see a SCSI hang every few days.
Regards,
Jack
At 10:28 AM 1/23/2018, jim stephens wrote:
Scsi controllers are very sensitive to resets
and getting out of step with the state of the bus the initiators they control.
Scsi can have multiple initiators, and you may
of course have a system which acts as a target,
but i'm guessing since you said drives, you have
a pretty common setup, a system with drives
attached, where the scsi device on your system is the initiator.
One thing that throws off scsi is to do a reset
which comes from somewhere the initiator doesn't
know about. many are not friendly when that
happens and just end up hung up. Reset tells
all the devices to stand down, and it is
expected that an enumeration of the bus will
take place by all the initiator(s).
That may have happened if you reset your other
processors or did something which affected the
initiator. And the resets on most systems
usually hit all components, so I'd be surprised
if only the one processor was affected.
thanks
Jim
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