Date: Thu, 21 Jul 2005 15:03:31 -0700 From: "Eli K. Breen" <bsd@unixforge.net> To: Elliot Finley <efinleywork@efinley.com> Cc: Francois Tigeot <ftigeot@wolfpond.org>, freebsd-stable@freebsd.org Subject: Re: Machine Replication Message-ID: <42E01BB3.1040801@unixforge.net> In-Reply-To: <010f01c58e3e$28458b50$37cba1cd@emerytelcom.com> References: <42DFF582.1050406@unixforge.net> <20050721211305.GC10821@aoi.wolfpond.org> <010f01c58e3e$28458b50$37cba1cd@emerytelcom.com>
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I should point out, this is for replication in a running production environment. Machines cannot be taken down, and swapping hardware is not an option. I'm currently experimenting with a copy of the MBR, and the root partition on a CD, with enough tools to attach to the network to retrieve images of the rest of the partitions (which can be taken as current snapshots from various servers). This _should_ result in the following scenario: Boot new machine with CD partition drive(s) dump MBR dump root ssh foo@server 'dump -C 64 -0af - /sliceX'| (cd /usr; restore -rf -) [repeat above for all drives, could be automated] Seem reasonable? -E- Elliot Finley wrote: > ----- Original Message ----- > From: "Francois Tigeot" <ftigeot@wolfpond.org> > >>On Thu, Jul 21, 2005 at 12:20:34PM -0700, Eli K. Breen wrote: >> >>>Does anyone have a good handle on how to replicate (read: image) a >>>freebsd machine from one machine to an ostensibly similar machine? >> >>[...] >> >> >>>Now whether my details are a bit off, that's fine, I don't want this to >>>be diluted in to discussion of minute frivolous details (as these things >>>are wont to do), but what I _am_ looking for is a tried, tested and true >>>method of FreeBSD machine replication, specifically for the 5.3+ > > releases. > >>I have found the following paper to be incredibly usefull : >> >>http://www.pix.net/software/pxeboot/archive/SANE.pdf >> >>I used some of the ideas in it to clone machines in the 5.1-5.2 era. > > > You could also just mirror the drive with a Promise RAID 1 card. I've done > that a couple of times and it works really well. > > Elliot >
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