From owner-freebsd-hackers@FreeBSD.ORG Thu Jun 16 18:46:47 2011 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 6311F1065687 for ; Thu, 16 Jun 2011 18:46:47 +0000 (UTC) (envelope-from cattelan@thebarn.com) Received: from x.digitalelves.com (x.digitalelves.com [209.98.77.55]) by mx1.freebsd.org (Postfix) with ESMTP id 197B88FC13 for ; Thu, 16 Jun 2011 18:46:46 +0000 (UTC) Received: from [IPv6:::1] (localhost [127.0.0.1]) (authenticated bits=0) by x.digitalelves.com (8.14.4/8.14.4) with ESMTP id p5GIWddG021625 for ; Thu, 16 Jun 2011 13:32:39 -0500 (CDT) (envelope-from cattelan@digitalelves.com) Message-ID: <4DFA4C47.8060503@digitalelves.com> Date: Thu, 16 Jun 2011 13:32:39 -0500 From: Russell Cattelan User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110424 Thunderbird/3.1.10 MIME-Version: 1.0 To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: kexec or similar for FreeBSD 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, 16 Jun 2011 18:46:47 -0000 I have been contacted about possibly implementing a fast reboot mechanism for FreeBSD similar to kexec on Linux. I have just started looking into how this accomplished so I figured a note to freebsd hackers would also be a good place to ask for comments. Has anybody looked at doing something like kexec? Is it the right thing to do for FreeBSD. I'm concerned that the way FreeBSD handles early kernel modules (loaded via the boot loader) vs linux which does everything via initrd is going to be a problem. Thanks for any help on this. -Russell Cattelan