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Date:      Tue, 22 Dec 1998 22:45:38 +1000
From:      "Harry Starr" <starr3@gccs.com.au>
To:        "current" <freebsd-current@FreeBSD.ORG>
Subject:   Problems with CAM and ncr
Message-ID:  <001501be2da8$fb35b830$0a9811cb@gccs.com.au>

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There seems to be a major problem with the new CAM code and the ncr driver.

Config:

Asus SC200 (ncr810) in Asus P2L97 M/B with PII-300 and 128MB mem.

With "hard" disk access (Make world; or Make release), more than likely, the
ncr driver will give an error message of ncr:::queue empty, at which point
the system will lock up (pager errors, etc). This is almost 100%
reproducible.

The SCSI drives are "old" Conner Cp3470. I'm not sure if there were problems
with tagged queueing in this model; but they worked OK in a DG/UX system.

The ncr driver previously reports that "tagged openings is now 31".

Reverting to a kernel dated "8-Aug-1998" alleviates the problem.

Any thoughts ??

Harry.



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