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Virtualbox » Historial » Versió 10

Pau Escrich, 05-01-2013 02:17

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h1. Virtualbox
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It is possible to emulate qMp with Virtual Box.
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First of all open your virtualbox (VB) and create a new machine (type linux 2.6).
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If you are using the VB wizard, do not select any storage device, we will do it latter.
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h3. Storage
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To make the things easy it is better to use IDE instead of SATA. 
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Create a new IDE disk and browse between your foldersand select the qMp vdi image file.
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The vdi file can be obtained here: http://fw.qmp.cat/testing/
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h3. Network Configuration
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First of all we create a virtual tun/tap device in the host machine.
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<pre>ip tuntap add mode tap dev vbox 
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ip link set vbox up
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ip addr add 172.30.22.10/24 dev vbox
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</pre>
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In VB machine configuration at least one network interface must be added.
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It should be configured as bridged interface to our new "vbox" network device.
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The driver "PCnet-PCI II" works fine.
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h3. Serial
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A serial port is needed because OpenWRT expects it. So it should be added in the VB machine configuration.
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It is possible to use it to connect with the qMp node from the host machine (useful for debug), but it is NOT NEEDED.
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To do so you should configure the VB serial as host pipe.
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Check the option "create pipe" and add the path "/tmp/vboxS0".
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Then in the host machine execute:
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<pre>socat UNIX-CONNECT:/tmp/vboxS0 TCP-LISTEN:7777 &
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netcat localhost 7777
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</pre>
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And you will get serial!
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h3. Start VM
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At this point you can start your virtual machine with qMp, open a browser and go to http://172.30.22.1
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If after the first reboot (automatic reboot) it does not boot (stays in "GRUB LOADING") reboot manually the VM.
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h3. Clone
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Ok, but just one node is quite boring so let's go to create more of them. Just switch-off the virtual machine, right click and Clone it.
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Select the option "regenerate MAC addresses", boot the new  machine and then execute:
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<pre>rm /qmp_configured
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/etc/init.d/qmp_autoconf start
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</pre>
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Then both nodes should see each other!