From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from <gentoo-user+bounces-135530-garchives=archives.gentoo.org@lists.gentoo.org>) id 1S1IGP-0005I9-JK for garchives@archives.gentoo.org; Sat, 25 Feb 2012 14:06:17 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id EB6DAE0B8A; Sat, 25 Feb 2012 14:06:03 +0000 (UTC) Received: from mail.muc.de (colin.muc.de [193.149.48.1]) by pigeon.gentoo.org (Postfix) with ESMTP id E4FC7E0B7C for <gentoo-user@lists.gentoo.org>; Sat, 25 Feb 2012 14:05:02 +0000 (UTC) Received: (qmail 20703 invoked by uid 3782); 25 Feb 2012 14:05:01 -0000 Received: from acm.muc.de (pD951B0CB.dip.t-dialin.net [217.81.176.203]) by colin.muc.de (tmda-ofmipd) with ESMTP; Sat, 25 Feb 2012 15:04:58 +0100 Received: (qmail 31061 invoked by uid 1000); 25 Feb 2012 14:04:24 -0000 Date: Sat, 25 Feb 2012 14:04:24 +0000 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Re: Safe way to test a new kernel? Message-ID: <20120225140424.GC3109@acm.acm> References: <CAN0CFw1msVnW-o4fxw8tjk+MMbHjHfLNb-HLr77jqbo++=j2Mg@mail.gmail.com> <ji9fu5$3bb$1@dough.gmane.org> Precedence: bulk List-Post: <mailto:gentoo-user@lists.gentoo.org> List-Help: <mailto:gentoo-user+help@lists.gentoo.org> List-Unsubscribe: <mailto:gentoo-user+unsubscribe@lists.gentoo.org> List-Subscribe: <mailto:gentoo-user+subscribe@lists.gentoo.org> List-Id: Gentoo Linux mail <gentoo-user.gentoo.org> X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <ji9fu5$3bb$1@dough.gmane.org> User-Agent: Mutt/1.5.21 (2010-09-15) X-Delivery-Agent: TMDA/1.1.12 (Macallan) From: Alan Mackenzie <acm@muc.de> X-Primary-Address: acm@muc.de X-Archives-Salt: bdda607d-85e0-4d87-8a85-f8ed0f48d01e X-Archives-Hash: 79d6fd8399264016888c10ffae90d8b5 Hello, Nikos. On Sat, Feb 25, 2012 at 04:10:10AM +0200, Nikos Chantziaras wrote: > On 25/02/12 04:00, Grant wrote: > > I need to test a kernel config change on a remote system. Is there a > > safe way to do this? The fallback thing in grub has never worked for > > me. When does that ever work? > Oh crap, you said "remote system". Somehow I missed that. Ignore my > previous post since obviously accessing Grub on a remote machine would > require a hardware VNC module (if you had that, then you wouldn't have > posted about the issue in the first place, I assume.) > The way I dealt with it, is to use the "boot once" functionality of Grub: > http://weichong78.blogspot.com/2007/04/grub-test-kernel-once.html > I didn't bother with the panic handler, since I had remote hard-reset > functionality (I recommend it; it can save your day.) What is this "remote hard-reset functionality", if you don't mind me asking? Do you mean somebody on the far end of a telephone line? -- Alan Mackenzie (Nuremberg, Germany).