Date: Tue, 14 Dec 1999 23:20:03 -0800 (PST) From: "Kenneth D. Merry" <ken@kdm.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/15447: Seagate ST32550 (Barracuda 2LP) may be a broken tagged queueing drive? Message-ID: <199912150720.XAA67807@freefall.freebsd.org>
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The following reply was made to PR kern/15447; it has been noted by GNATS. From: "Kenneth D. Merry" <ken@kdm.org> To: Ken Harrenstien <klh@netcom.com> Cc: freebsd-gnats-submit@FreeBSD.ORG Subject: Re: kern/15447: Seagate ST32550 (Barracuda 2LP) may be a broken tagged queueing drive? Date: Wed, 15 Dec 1999 00:13:04 -0700 On Tue, Dec 14, 1999 at 04:58:33 -0800, Ken Harrenstien wrote: > Because of your statement that the ST32550 is known to work, and the > fact that my Fujitsu was failing in the same way, I don't think the > drives are at fault. So we're left with either the controller, or > FreeBSD 3.1's support of it, or something else. The controller seems > unlikely since Tagged Queueing is a higher-level protocol and there's > no reason to suspect either the physical bus or the link-level > protocol (otherwise many more problems would have evinced themselves). > > One more data point. I use the same kernel source base in another > system (NCR 53c895, 3 IBM drives) where all drives are TQ-enabled and > have never had problems despite much heavier usage. > > I'm starting to think that whatever is causing the kernel to be > spastic about whether or not to use Tagged Queueing (cf kern/15446) > may also be responsible for its failure to operate properly. In any > case, since the ST32550 is no longer a suspect, I suggest that this > bug (kern/15447) be closed and the above information made a follow-up > to kern/15446. Thanks for all the detailed information. Based on PR kern/15447, I think we can close this and assume for now that this is a problem with Tekram's amd driver. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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