[vbox-dev] issue on broadcast diff image to others

[Vladimir Filipović]

On Mon, Jul 15, 2013 at 12:55 PM,  <vbox-dev-request at virtualbox.org> wrote:
> From: "李彪" <cloudbot-dev at sinobot.com.cn>
> To: "vbox-dev" <vbox-dev at virtualbox.org>
> Cc:
> Date: Mon, 15 Jul 2013 13:16:17 +0800
> Subject: [vbox-dev] issue on broadcast diff image to others
> All:
>
> I had set up a working environment where people are using one VBOX VM for their daily work, with a prepared VDI file downloaded from file server by wireless and clone & run in each one's PC.
>
> however, there is a requirement that admin will update the VDI file EVERY DAY and he want his change can be automatically sync to all other guys PC, and he does not want people to download whole VDI file every day, since the VDI file size(>5G) and number of people (300) make it impossible in wireless environment.
>
> Is it possible to find such a solution that only the change made by admin can be synced to all others PC and merged ?
>
> thomas

Hi Thomas,

I'd suggest you look into bsdiff [1] or xdelta [2].
Also, rsync [3] might be able to solve your problem more elegantly,
depending on what the rest of your setup is like.

[1] http://www.daemonology.net/bsdiff/
[2] http://www.linuxmanpages.com/man1/xdelta.1.php
[3] http://www.linuxmanpages.com/man1/rsync.1.php