From owner-freebsd-current@FreeBSD.ORG Fri Oct 10 06:30:03 2014 Return-Path: Delivered-To: current@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 47F62BAE; Fri, 10 Oct 2014 06:30:03 +0000 (UTC) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 1F5B29E1; Fri, 10 Oct 2014 06:30:01 +0000 (UTC) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id JAA26255; Fri, 10 Oct 2014 09:29:59 +0300 (EEST) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1XcTiA-0009I6-Qk; Fri, 10 Oct 2014 09:29:58 +0300 Message-ID: <54377C99.1000406@FreeBSD.org> Date: Fri, 10 Oct 2014 09:28:41 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.1.2 MIME-Version: 1.0 To: Steve Wills Subject: Re: zfs hang References: <20141008004045.GA24762__48659.9047123038$1412728878$gmane$org@mouf.net> <5434D1CE.8010801@FreeBSD.org> <20141010012724.GD79158@mouf.net> In-Reply-To: <20141010012724.GD79158@mouf.net> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: current@FreeBSD.org, fs@FreeBSD.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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: Fri, 10 Oct 2014 06:30:03 -0000 On 10/10/2014 04:27, Steve Wills wrote: > Dying drives > shouldn't cause panic, right? There can be different shades of dying. Returning errors is one thing, hanging is a different thing. There is a good reason why systems panics in that case. I am surprised though that the hang was not detected in the lower layers like ahci driver or CAM. -- Andriy Gapon