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Date:      Tue, 16 Mar 1999 15:24:37 -0700 (MST)
From:      "Kenneth D. Merry" <ken@plutotech.com>
To:        mjacob@feral.com
Cc:        joerg_wunsch@uriah.heep.sax.de, freebsd-scsi@FreeBSD.ORG
Subject:   Re: Strange SCSI QIC tape behaviour
Message-ID:  <199903162224.PAA28232@panzer.plutotech.com>
In-Reply-To: <Pine.LNX.4.04.9903161422090.12815-100000@feral-gw> from Matthew Jacob at "Mar 16, 1999  2:22:33 pm"

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Matthew Jacob wrote...
> 
> > > I also noticed that the sa driver doesn't claim device entries in
> > > DEVFS.  This should be easy to fix (and a lot more of the CAM entries
> > > are missing, only the da's are there), so i could try to fix this
> > > myself.
> > 
> > IIRC, the problem is that the version of DEVFS that we have now can't
> > handle device arrival/removal events from an interrupt context.  Julian had
> > a version of DEVFS/SLICE at one point that could handle being called from
> > an interrupt context, however.  Bruce looked into the DEVFS/CAM thing a
> > while back, and conculded it wouldn't work for now.  If you want details,
> > ask him.
> > 
> > So, the bottom line is, if you're using CAM, you can't use DEVFS.
> > 
> 
> Doesn't this effectively mean "not at all?". 

It means you shouldn't use it in place of /dev.  You can start it, but
just mount it elsewhere.

Ken
-- 
Kenneth Merry
ken@plutotech.com


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