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Date:      Wed, 28 Apr 1999 14:54:07 -0700 (PWT)
From:      Matthew Jacob <mjacob@feral.com>
To:        "Christopher T. Johnson" <cjohnson@neunacht.netgsi.com>
Cc:        freebsd-current@freebsd.org
Subject:   Re: Further on tape & CAM problems
Message-ID:  <Pine.LNX.4.04.9904281452220.26302-100000@feral.com>
In-Reply-To: <199904282144.RAA38142@neunacht.netgsi.com>

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> > 
> > 
> > I'm sorry- I missed the front end of this. I've had pretty good luck with
> > getting the 8200 to work. What f/w level are you at for the 8200?
> > 
> > -matt
> 
> Matt, it isn't a tape drive problem.  Nor is it directly and exabyte problem.
> It is a problem where an error from the tape drive is not being handled
> well at the kernel interface.  It is as if the kernel is sending a block
> to the drive, the drive is giving or holding and error state, the kernel
> sees the drive drop the block but instead of reporting an error back to
> user land, it reports "ok".  User land then proceeds to dump tons of
> bytes down the pipe with out really writing it to tape.
> 

Yes, but I'd like to know what error condition is inducing the driver
and/or CAM issues. 

Has anyone tried a CAMDEBUG kernel and camcontrol tracing on?



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