From owner-freebsd-bugs Mon May 20 2:47:54 2002 Delivered-To: freebsd-bugs@freebsd.org Received: from mail.dt.e-technik.uni-dortmund.de (krusty.dt.E-Technik.Uni-Dortmund.DE [129.217.163.1]) by hub.freebsd.org (Postfix) with ESMTP id E32DE37B407; Mon, 20 May 2002 02:47:49 -0700 (PDT) Received: from merlin.emma.line.org (localhost [127.0.0.1]) by mail.dt.e-technik.uni-dortmund.de (Postfix) with ESMTP id 16AE5A3831; Mon, 20 May 2002 11:47:47 +0200 (CEST) Received: by merlin.emma.line.org (Postfix, from userid 500) id 2B01125318; Mon, 20 May 2002 11:47:44 +0200 (CEST) X-Draft-From: ("nnml+private:freebsd-stab" "") To: freebsd-stable@freebsd.org, sos@freebsd.org, freebsd-bugs@freebsd.org Subject: ATA observations in FreeBSD 4.6-RC From: Matthias Andree Date: Mon, 20 May 2002 11:47:44 +0200 Message-ID: Lines: 37 User-Agent: Gnus/5.090007 (Oort Gnus v0.07) Emacs/21.1 (i686-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-bugs@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Hi, it seems that the ATA subsystem has some bugs in recent FreeBSD-STABLE versions, and it looks as though FreeBSD 4.6 is going to ship with these bugs. Whom do I seat in front of these to prevent this? 1. PR kern/37060: kernel panic with hw.ata.tags=1 in ata-disk.c:710 filed April 14 (five weeks ago) The kernel does not boot at all on my machine. This PR has never been replied to, but it's marked as critical with high priority because it's a show-stopper. This MUST be fixed before 4.6 RELEASE. If the fix is: disable ATA tagged queueing altogether not only by default, but also ignore hw.ata.tags, so be it. 2. to be filed shortly: at initial boot, all my three ATA drives attached to my VIA KT133 are used in UDMA66 mode. After wakeup from APM standby, all ATA interfaces are reset and all primary drives are in UDMA33 mode henceforth. Affects performance of the system, should also be fixed before 4.6-RELEASE. 3. not yet filed, because it's documented: FreeBSD doesn't try Tagged Queueing on WDC 420400D or IBM DJNA drives. Linux 2.5.15 uses tagged queueing on these drives, it seems, it works. Missing feature, should be fixed soon after 4.6 or at least for 5.0 (ok, 5.0 is off-topic here) NB: I'm only subscribed to FreeBSD-stable, so please Cc: me when removing stable from your reply destination address. -- Matthias Andree To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message