Date: Mon, 5 Apr 2010 18:30:34 -0600 From: Tim Judd <tajudd@gmail.com> To: Peter Steele <psteele@maxiscale.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: How customized can an mfsroot be? Message-ID: <x2uade45ae91004051730j87d11987j47b3b945971c85d6@mail.gmail.com> In-Reply-To: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3B6F7D05@MBX03.exg5.exghost.com> References: <7B9397B189EB6E46A5EE7B4C8A4BB7CB3B6F7D05@MBX03.exg5.exghost.com>
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On 4/5/10, Peter Steele <psteele@maxiscale.com> wrote: > We have a USB boot stick based cloning process that we're considering > porting to a DVD based media. I'm not sure though that it's possible due to > the restrictions I've seen in the mfsroot environment we'd have to use. For > example, in our USB disk procedure, we create partitions using gpart and set > up mirroring for the OS partitions. We even recognize 3Ware controllers and > automatically create logical RAID sets from the available drives. In some > earlier work I did with a pxe boot server a couple of years ago, I know that > I could not setup mirrors via sysinstall and I assume that hasn't changed in > FreeBSD 8. Is it possible to customize the mfsroot environment to run a > larger variety of commands to allow us to duplicate the cloning process we > use with USB boot sticks or is this project likely not doable? > I'm working through my own livecd boot mechanism currently. >From my experience, there is a limit on how much space you can fit into the kernel.. for modules. mfs_root is considered a module. Based on previous projects such as freesbie, mfsbsd, etc, you can run between a 50-100MB compressed mfs_root to find how much data you can store on that medium. But ... why are you constricting yourself to use mfs_root? I have many times ran FreeBSD completely from CDrom, which will give you all 700 (or a DVD, 4.3G) usable space. I'd be happy to help, if you have questions. but please direct the questions to the mailing list. --Tim
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