From owner-freebsd-hackers@FreeBSD.ORG Thu Jul 1 07:15:09 2010 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 978FC106564A for ; Thu, 1 Jul 2010 07:15:09 +0000 (UTC) (envelope-from des@des.no) Received: from smtp.des.no (smtp.des.no [194.63.250.102]) by mx1.freebsd.org (Postfix) with ESMTP id 5A8818FC0C for ; Thu, 1 Jul 2010 07:15:09 +0000 (UTC) Received: from ds4.des.no (des.no [84.49.246.2]) by smtp.des.no (Postfix) with ESMTP id 556971FFC34; Thu, 1 Jul 2010 07:15:08 +0000 (UTC) Received: by ds4.des.no (Postfix, from userid 1001) id CCCB584571; Thu, 1 Jul 2010 09:12:56 +0200 (CEST) From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= To: d@delphij.net References: <4C2B07F5.6030801@delphij.net> <4C2B4D35.8060903@feral.com> <86lj9wmbrz.fsf@ds4.des.no> <4C2BBF3C.4070503@delphij.net> <86hbkkmad1.fsf@ds4.des.no> <4C2BD498.3090704@delphij.net> Date: Thu, 01 Jul 2010 09:12:56 +0200 In-Reply-To: <4C2BD498.3090704@delphij.net> (Xin LI's message of "Wed, 30 Jun 2010 16:34:48 -0700") Message-ID: <86d3v7n093.fsf@ds4.des.no> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Cc: freebsd-hackers@freebsd.org, Matthew Jacob Subject: Re: Supermicro BIOS's watchdog feature? X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Jul 2010 07:15:09 -0000 Xin LI writes: > "Dag-Erling Sm=C3=B8rgrav" writes: > > Perhaps the motherboard has additional watchdog hardware? If you > > disable the watchdog in BIOS, does ichwd still work? > If I kill -9 watchdogd the system do reset itself so I think ichwd(4) > really works even if BIOS setting is 'Disabled' (but I'm not sure if > this method is right? Looking at the code I think the answer is > probably "Yes" though) Yes. This confirms my hypothesis, which is that your motherboard has additional watchdog hardware, and that the BIOS setting controls that, not the ichwd watchdog timer. Just disable the watchdog in BIOS and use ichwd instead. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no