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Date:      Wed, 15 Dec 1999 21:22:44 +0100 (CET)
From:      Michael Reifenberger <root@nihil.plaut.de>
To:        Hellmuth Michaelis <hm@hcs.de>
Cc:        FreeBSD Current <freebsd-current@FreeBSD.ORG>
Subject:   Re: tagged openings now 31, 25, 2; ncr0: queue empty.
Message-ID:  <Pine.BSF.4.10.9912152116270.773-100000@nihil.plaut.de>
In-Reply-To: <19991215193013.B006D38E5@hcswork.hcs.de>

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On Wed, 15 Dec 1999, Hellmuth Michaelis wrote:
...
> (da1:ncr0:0:1:0): tagged openings now 31
> (da1:ncr0:0:1:0): tagged openings now 25
> (da1:ncr0:0:1:0): tagged openings now 2
> 
> and then scrolling:
> 
> ncr0: queue empty.
...
> What is happening there ? Is the drive going bad ?
Probably if you see this for the first time.
Ususlly you see some degration from 64 to 32 for not optimal designed Drives
(Which propagate to operate with more tagged commands than they actually can)
see /sys/cam/cam_xpt.c for such drives.
If it's a new drive maybe it can't hande tagged commands at all.
This could be solved by adding an entry in cam_xpt.c

Bye!
----
Michael Reifenberger
Plaut Software GmbH, R/3 Basis



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