From owner-freebsd-current@FreeBSD.ORG Sun Mar 31 04:00:30 2013 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id CB7A7400 for ; Sun, 31 Mar 2013 04:00:30 +0000 (UTC) (envelope-from peter@wemm.org) Received: from mail-ve0-f174.google.com (mail-ve0-f174.google.com [209.85.128.174]) by mx1.freebsd.org (Postfix) with ESMTP id 8C93B86A for ; Sun, 31 Mar 2013 04:00:30 +0000 (UTC) Received: by mail-ve0-f174.google.com with SMTP id jz10so1579260veb.19 for ; Sat, 30 Mar 2013 21:00:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wemm.org; s=google; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=j3lEfUgl3ENIkRJe1asq24n4ZDTwwnC7JLLuXafk/pE=; b=CI+JNeVQ4WyrhFfGG539oN7s2qRlCq9fkBckNwKmZ4O1sSK84GeKWpvIXFnrr7i1ln +OYPeGVZaPjct55QdCJsKEkjsKMIFZ4GUVu7p2vuYC/ex6+buOCx+A+hdpdbjatrv1/b vhd24ZCieI3qvtn6FDYbX+72WTy+YdTplHqXY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type:x-gm-message-state; bh=j3lEfUgl3ENIkRJe1asq24n4ZDTwwnC7JLLuXafk/pE=; b=eseLo6MLkvDOpWOC1sRAn+B0wthQGz3GuTsKNELow8pc2qjLbde34MryTHe6GmwgMB lZi7TETCyOXbZ8amLqMBXoBlbK4ALC+utO4ZWkSESu78SLYAR8rx//hAQK7n3HyUFawG zWIpKfmLgvfbDIq0yz6Lb02qV42Nh2yCr828cNKsP35SkcObbglC9PqsWabfzfejosWF pESlDipTuD6ALamzZnrbAude2DT94IqwVB/FsyueFpJWTgz8/EnEurbYBL4ro/XYYL3y +CQVj3N/dHDspOnMocPow/ZqvKiEbdhLQkJmu8L07BqbcyUgDiV/4IT5qAxWMQY/MZRx zfdA== MIME-Version: 1.0 X-Received: by 10.52.35.110 with SMTP id g14mr4933384vdj.61.1364702424376; Sat, 30 Mar 2013 21:00:24 -0700 (PDT) Received: by 10.221.11.72 with HTTP; Sat, 30 Mar 2013 21:00:24 -0700 (PDT) In-Reply-To: <5157756F.4040908@FreeBSD.org> References: <51536306.5030907@FreeBSD.org> <5157756F.4040908@FreeBSD.org> Date: Sat, 30 Mar 2013 21:00:24 -0700 Message-ID: Subject: Re: Any objections/comments on axing out old ATA stack? From: Peter Wemm To: Matthias Andree Content-Type: text/plain; charset=ISO-8859-1 X-Gm-Message-State: ALoCoQl8EgaCFTVlxDVTwkXgE1ET/m3MuOYA0tb57G8vLFhvgQqL9a8XiUkeWBaxMnf9kEq8NuN6 Cc: Alexander Motin , freebsd-current@freebsd.org, freebsd-stable@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 31 Mar 2013 04:00:30 -0000 On Sat, Mar 30, 2013 at 4:29 PM, Matthias Andree wrote: > Am 27.03.2013 22:22, schrieb Alexander Motin: >> Hi. >> >> Since FreeBSD 9.0 we are successfully running on the new CAM-based ATA >> stack, using only some controller drivers of old ata(4) by having >> `options ATA_CAM` enabled in all kernels by default. I have a wish to >> drop non-ATA_CAM ata(4) code, unused since that time from the head >> branch to allow further ATA code cleanup. >> >> Does any one here still uses legacy ATA stack (kernel explicitly built >> without `options ATA_CAM`) for some reason, for example as workaround >> for some regression? Does anybody have good ideas why we should not drop >> it now? > > Alexander, > > The regression in http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/157397 > where the SATA NCQ slots stall for some Samsung drives in the new stack, > and consequently hang the computer for prolonged episodes where it is in > the NCQ error handling, disallows removal of the old driver. (Last > checked with 9.1-RELEASE at current patchlevel.) We're talking about 10.x, so if you want it fixed, you need update with 10.x information. Please put 10.x diagnostics in the PR. -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com; KI6FJV bitcoin:188ZjyYLFJiEheQZw4UtU27e2FMLmuRBUE