I am wanting to restart a QEMU virtual machine from a cron entry, let
the VM do something, and then after a period of time freeze the VM
until the next day. After reading the docs and browsing the Web for a
few days, I'm not so sure this is possible.

Of course, much control is available interactively, and maybe I'm just
not seeing the way this could be done as few examples exist in the user
docs. Any tips will be appreciated.

- Nate >>

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On Friday 23 February 2007 07:00, Linas Žvirblis wrote:
> And do not forget that QEMU is mostly a GUI application, so you will
> probably need to run xorg.

You can run qemu headless, with a virtual framebuffer. Makes for a virtual
machine you connect to via VNC to view.

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* Linas ??virblis <0x0007@gmail.com> [2007 Feb 23 10:01 -0600]:

> A much simpler solution would be to have QEMU started by cron, and set
> up the guest OS to shut down after doing something. Or you could run
> QEMU in snapshot mode and simply kill it, when not needed. Or... the
> possibilities are endless. What exactly do you want to achieve?

This was the way I had originally intended to do things and I think I
figured how to get this done. My issue was with getting qemu to shut
down. It now appears that if I start the VM with the -no-reboot option
and then tell the guest (Slackware 10.2) to 'shutdown -r now' qemu will
exit instead.

I don't need to have any interaction between the host and the guest, I
was just missing a reliable way to shut the thing down which I think
I've figured out.

My goal in all of this is to download a CVS tree of a project I'm
working on, build a snapshot tarball, upload it to a directory, delete
the tree, and exit. I've already got all of that working on a seperate
machine (which used to run full time) and now I'm trying to consolidate
everything onto this machine. It can do this in the middle of the
night when I sleep.

> And do not forget that QEMU is mostly a GUI application, so you will
> probably need to run xorg.

Thanks for pointing that out. That may be another area to work around
as well.

- Nate >>

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Nate Bargmann wrote:

>> And do not forget that QEMU is mostly a GUI application, so you will
>> probably need to run xorg.
>
> Thanks for pointing that out. That may be another area to work around
> as well.

As Joshua Kugler already stated, you can run QEMU headless; and there is
more than one way to do it. Apart from one already mentioned, you could
try starting QEMU in non-graphics mode, as if it had no VGA card. Same
way one would run a headless server.

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