Ongoing U320 AIC7902 Seagate ST318453LW issues, SCB timed out

[don at sandvine.com (Don Bowman)]

> From: Kenneth D. Merry [mailto:ken_(_at_)_kdm_(_dot_)_org]
> On Fri, Aug 08, 2003 at 13:43:55 -0400, Don Bowman wrote:
> > Just to confirm i'm talking about the same thing...
> > my seagate device reports 255 tagged openings:
> > 
> > # camcontrol tags 0:0:0
> > (pass0:ahd0:0:0:0): device openings: 255
> > 
> > but seagate indicates the device has only support for
> > 64. Am i reading something different here?
> 
> You'll see 255 openings until we get a queue full response 
> from the drive.
> Then it'll go down to however many transactions we had 
> outstanding when the
> queue full happened.
> 
> If you want a little more information (e.g. how many transactions are
> outstanding at a given moment), try:
> 
> camcontrol tags da0 -v

Thanks for the info. This is what I see:

# camcontrol tags 0:0:0 -v
(pass0:ahd0:0:0:0): dev_openings  252
(pass0:ahd0:0:0:0): dev_active    3
(pass0:ahd0:0:0:0): devq_openings 252
(pass0:ahd0:0:0:0): devq_queued   0
(pass0:ahd0:0:0:0): held          0
(pass0:ahd0:0:0:0): mintags       2
(pass0:ahd0:0:0:0): maxtags       255
# camcontrol devlist
<SEAGATE ST318453LW 0005>          at scbus0 target 0 lun 0 (pass0,da0)