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	<title>UnderworldLabs.org &#187; virtualbox</title>
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	<description>My Dropbox</description>
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		<title>VirtualBox update woes</title>
		<link>http://underworldlabs.org/blog/virtualbox-update-woes/</link>
		<comments>http://underworldlabs.org/blog/virtualbox-update-woes/#comments</comments>
		<pubDate>Thu, 19 May 2011 14:07:57 +0000</pubDate>
		<dc:creator>Takis Diakoumis</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[virtualbox]]></category>
		<category><![CDATA[virtualization]]></category>

		<guid isPermaLink="false">http://underworldlabs.org/?p=129</guid>
		<description><![CDATA[Not sure what happened here but upgrading from VirtualBox 3.x to 4.06 (with Oracle branding too &#8211; eek), killed a few of my VMs. First...]]></description>
			<content:encoded><![CDATA[<p>Not sure what happened here but upgrading from VirtualBox 3.x to 4.06 (with Oracle branding too &#8211; eek), killed a few of my VMs. First USB 2.0 support is now a part of some separate package, and then 4 out of 9 VMs would not start with messages like:</p>
<pre>unknown configuration node //DB2</pre>
<p>At this point i was thinking how the hell did VirtualBox know about my DB2 installation &#8211; assuming that my DB2 database installed on that VM was an issue. A little confusing here too given that i would get the VM window and then it would just close so it wasn&#8217;t getting anywhere near starting the OS &#8211; WindowsXP.</p>
<p>Anyway a bit of digging about and then this:</p>
<pre>takisd@fitter:~> VBoxManage getextradata WindowsXP-1 enumerate
Key: GUI/LastCloseAction, Value: powerOff
Key: GUI/LastGuestSizeHint, Value: 640,480
Key: GUI/LastNormalWindowPosition, Value: 1437,47,640,527
Key: GUI/LastWindowPostion, Value: 1422,111,1224,867
Key: GUI/MiniToolBarAlignment, Value: bottom
Key: GUI/MiniToolBarAutoHide, Value: on
Key: GUI/SaveMountedAtRuntime, Value: yes
Key: GUI/ShowMiniToolBar, Value: yes
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/DB2/GuestPort, Value: 50000
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/DB2/HostPort, Value: 50000
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/DB2/Protocol, Value: TCP
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Firebird/GuestPort, Value: 3050
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Firebird/HostPort, Value: 3050
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Firebird/Protocol, Value: TCP
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Oracle/GuestPort, Value: 1521
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Oracle/HostPort, Value: 1521
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/Oracle/Protocol, Value: TCP
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/SQLServer/GuestPort, Value: 1433
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/SQLServer/HostPort, Value: 1433
Key: VBoxInternal/Devices/pcnet/0/LUN#0/Config/SQLServer/Protocol, Value: TCP
</pre>
<p>&#8230;where <code>WindowsXP-1</code> is the name of the virtual machine.</p>
<p>So all my intalled DBs on that particular VM had a setting on them for respective ports. I use most VMs for testing against various databases for various apps and mainly for <a href="http://executequery.org">Execute Query</a>. </p>
<p>I vaguely recalled setting these some time ago &#8211; probably as a network response for forwarding &#8211; either way i didn&#8217;t really remember and resetting these with empty values fixed the problem like this:</p>
<pre>VBoxManage setextradata WindowsXP-1 "VBoxInternal/Devices/pcnet/0/LUN#0/Config/DB2/GuestPort"</pre>
<p>&#8230;and so on for the other nodes. Restarting the OS worked just fine and I now have my VMs back. Not sure if this documented anywhere by Oracle &#8211; quite the gotcha for seemingly simple upgrade.</p>
<p>&#8230;and here i was thinking WTF did Oracle do now&#8230;</p>
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		<item>
		<title>Bye-bye VMWare &#8211; hello VirtualBox</title>
		<link>http://underworldlabs.org/blog/bye-bye-vmware-hello-virtualbox/</link>
		<comments>http://underworldlabs.org/blog/bye-bye-vmware-hello-virtualbox/#comments</comments>
		<pubDate>Mon, 01 Sep 2008 23:38:44 +0000</pubDate>
		<dc:creator>Takis Diakoumis</dc:creator>
				<category><![CDATA[Blog]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[virtualbox]]></category>
		<category><![CDATA[virtualization]]></category>
		<category><![CDATA[vmware]]></category>

		<guid isPermaLink="false">http://underworldlabs.org/?p=21</guid>
		<description><![CDATA[Well after some serious stuffing about i finally gave up on vmware. My latest kernel upgrade to 2.6.26.x just wouldn&#8217;t play nice regardless of what...]]></description>
			<content:encoded><![CDATA[<p>Well after some serious stuffing about i finally gave up on vmware. My latest kernel upgrade to 2.6.26.x just wouldn&#8217;t play nice regardless of what i did. Advice was sought from <a href="http://communities.vmware.com/message/1036922" target="_blank">relevant places</a> to no avail &#8211; even though the number of people with a similar issue was (is) growing. A colleague with an identical issue upgraded to the vmware 2 release candidate and the issue was not noticed there.  There was no inclination to go down that road &#8211; its a 450MB+ download, runs in a browser window, and looks like a rather bloated setup compared to the 1.x releases  No problem though as i&#8217;ve discovered <a href="http://www.virtualbox.org/" target="_blank">VirtualBox</a>.</p>
<p>After a little bit of stuffing around to get the bridge networking up and running (vmware did this for you on startup quite nicely), i&#8217;m all good now with a couple of guest operating systems installed and running with no issue. Some useful docs and info for setting up with <a href="http://debian.org" target="_blank">Debian</a> can be found on the Debian Virtual Box wiki <a href="http://wiki.debian.org/VirtualBox" target="_blank">here</a>. A huge plus is also that it comes with a neat script to build the vbox module for the running kernel.</p>
<p>Overall, so far VirtualBox is more than a suitable replacement for vmware. Give it a shot if you haven&#8217;t already.</p>
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