On Tue, Jan 18, 2022 at 12:49:34PM -0600, Eric W. Biederman wrote:
> 
> Can someone tell me if I am missing something?
> 
> I do a lot of testing of linux kernels.  A bunch of that I have
> historically done in qemu with kvm support.  Unfortunately nested
> hardware virtualization does not work.  Which means for testing
> for race conditions and the like I need to run the kernels in
> their own HVM.
> 
> I use an HVM so I can update the kernel in /boot and reboot the qube and
> be running the kernel I am testing.  It would be nice if I could use a
> throw-away qube that just boots with a kernel of my choosing but using
> an stand-alone qube is fine.
> 
> Where I run into practical problems is when I want to place specific
> files into my testing qube.  I have not figured out how to ssh into
> the qube from another qube, nor have I figured out how to use qvm-copy.
> The best I have right now is to have an external machine that I copy
> things to and then copy them back, which seems like a real hack.
> 
> I also have not figured out how to get a serial console from such a qube
> only a graphical one which makes it more difficult than I would like
> to capture errors.
> 
> I looked at installing the qubes-core-agent package in my testing HVM
> but it has too many dependencies and installing it makes it impossible
> to test what I would like to test.  That is assuming someone has even
> packaged it for the distro I need to test on.
> 
> Am I missing something?  Is there an easier more straight forward way to
> setup a testing qube?  Is it possible to setup a virtual serial console
> to a qube?  Is it possible to ssh to a qube from another qube?
> 
> Eric

Hi Eric

You should probably check out the fine documentation:
https://www.qubes-os.org/doc/managing-vm-kernels/ has information about
using different kernels, including kernels provided by the qube.

https://www.qubes-os.org/doc/firewall has information about enabling
networking between qubes.

If you are using HVMs you can, in some cases, install qubes packages,
and then use tools like qvm-copy. I say, in some cases, because this
wont work with some targets, like Ubuntu standalones.

unman

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