From owner-freebsd-bugs@FreeBSD.ORG Fri Nov 15 10:25:42 2013 Return-Path: Delivered-To: freebsd-bugs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 542FE166; Fri, 15 Nov 2013 10:25:42 +0000 (UTC) Received: from mail-pd0-x22c.google.com (mail-pd0-x22c.google.com [IPv6:2607:f8b0:400e:c02::22c]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 2B1EF2E6B; Fri, 15 Nov 2013 10:25:42 +0000 (UTC) Received: by mail-pd0-f172.google.com with SMTP id q10so3307815pdj.31 for ; Fri, 15 Nov 2013 02:25:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=W9cwKF1htR/WpoBZ3yHNLUp7Dc9dXsWiSraagrR83mY=; b=KDldrS4XLqlPz1lTmQd5GOgkuekTYo31qjop99G+RtYoOMUPz+4vbCavVtXT87au1d 93oQsU+xmhKE8RIY7ePXhlhFFUhwdLt5d18/ywLnJMyMhg0LnENpFmdeIYvYxb92GgfF mNwfphWbZWbiXzf1DlzV70J2frQc4fv7HEhkNO/KjXnaWk025N8zZQccbCEorqFv1Jxe 3yLlwbw3aWYKfYFlL6yGdDzVWSnzYnLmOupaKaStYOi86vASLOIJiGzEICrILHCEXuKs 5TwNMO8scuuEWCJFY9GySamg//W5fWaGWCfLmrMXOQnz5zaTt5TYfSyuzfQaJqmYxKyz tVtQ== MIME-Version: 1.0 X-Received: by 10.66.142.107 with SMTP id rv11mr6221506pab.17.1384511141820; Fri, 15 Nov 2013 02:25:41 -0800 (PST) Received: by 10.68.102.35 with HTTP; Fri, 15 Nov 2013 02:25:41 -0800 (PST) In-Reply-To: References: <201311150318.rAF3IsB4001517@oldred.freebsd.org> <201311150320.rAF3K0ik017451@freefall.freebsd.org> Date: Fri, 15 Nov 2013 11:25:41 +0100 Message-ID: Subject: Re: misc/183980: Unreliable hotplug support with Intel Patsburg AHCI SATA controller From: Marie To: FreeBSD-gnats-submit@freebsd.org, freebsd-bugs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.16 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Nov 2013 10:25:42 -0000 Following suggestions from mav@ on the FreeBSD forums ( http://forums.freebsd.org/showthread.php?t=43238), I've discovered that the problem was somehow caused by SWAP being enabled on the device which was being unplugged. Considering that 'top' output indicated no swap was being used, and that the system had nearly 63 GB unused memory at the time, I would be surprised if anything was swapped. Although the issue is not what I initially thought it was, I still believe this is a problem which needs resolving, as a hdd dying for whatever reason should not make a port unavailable for what seems like an arbitary period of time. (I have not yet managed to make the port work again by any other way than a reboot, but I only left the system running for up to 15 minutes)