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I have a Mac Mini on OS X Lion, acting as a server in which an Ubuntu virtual machine is working using VBoxHeadless. The virtual machine has network connected using NAT to the host, and there are two port forwards: 22 on guest gets to 2022 on host (SSH), and 443 on guest goes to 2443 on host (HTTPS).

On the host (mac mini), I propagated these services to the Bonjour service, so that my Time Capsule would wake my mac mini up when I access port 2022 or 2443. There is a problem though: when my mac mini wakes up, VirtualBox has put the guest to pause, but I attempt a connection to the guest, the host wakes up well but VirtualBox doesn't 'unpause' the guest.

So, after I put the host to sleep:

  • If I SSH into my host (port 22), it wakes up beautifully and I get an instant connection.
  • If I SSH into my guest (using port 2022 to host), host wakes up, but the guest remains paused, and I can't connect.

NOTE: This issue really only occurs when using VBoxHeadless, when I'm using the GUI app, it wakes up fine. The problem is the guest is a server that I want to boot up with the host, and I really don't want the UI with it.

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Why was this downvoted? – Pelle ten Cate Nov 10 '11 at 13:29
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Have you tried scripting a:

VBoxManage controlvm "[VM Name]" resume

As part of the Mac's resume (if possible)?

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I tried doing that using sleepwatcher. Still no success, but it seems that even after waking the machine up, it is not accepting connections beautifully. Is there any possibilities that a linux guest accepting connections doesn't like to be paused? – Pelle ten Cate Sep 2 '11 at 9:19
That is very possible. Another consideration may be to perform a "savestate" prior to the Mac entering sleep and then a "startvm" to restore the VM when it awakes. Not the most agile in responsiveness, but then servers should use power save techniques very sparingly - how about just powering down display along with the hard drive(s) and throttling down the processor? – user48838 Sep 2 '11 at 9:41
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