From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932427AbWAVNUo (ORCPT ); Sun, 22 Jan 2006 08:20:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932430AbWAVNUo (ORCPT ); Sun, 22 Jan 2006 08:20:44 -0500 Received: from savages.net ([66.93.39.90]:32690 "EHLO mail.savages.net") by vger.kernel.org with ESMTP id S932427AbWAVNUo (ORCPT ); Sun, 22 Jan 2006 08:20:44 -0500 Message-ID: <43D43EEB.3080209@savages.net> Date: Sun, 22 Jan 2006 18:26:51 -0800 From: Shaun Savage User-Agent: Mozilla Thunderbird 1.0.7-1.4.1.centos4 (X11/20051007) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Pavel Machek CC: linux-kernel@vger.kernel.org Subject: Re: CBD Compressed Block Device, New embedded block device References: <43D3467C.7010803@tvlinux.org> <20060122082620.GC1543@elf.ucw.cz> In-Reply-To: <20060122082620.GC1543@elf.ucw.cz> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi Compression is just one feature. Each partition is wrapped in a package that has a header. even the kernel and boot loader are wrapped in the package. Each package can be hashed and signed. There is a patch for GRUB that boots CBD. GRUB patch does 3 things, boot the kernel, find the latest version of each package, verify hash and signature. This allow for in robust field update of packages. shaun Pavel Machek wrote: >On Ne 22-01-06 00:46:52, Shaun Savage wrote: > > >>HI >> >>Here is a patch for 2.6.14.5 of CBD >>CBD is a compressed block device that is designed to shrink the file >>system size to 1/3 the original size. CBD is a block device on a file >>system so, it also allows for in-field upgrade of file system. If >>necessary is also allows for secure booting, with a GRUB patch. >> >> > >What does compression have to do with secure booting? > > > >