Issues are for discussion

[amirmc]

We'll use the issue tracker here for discussion and questions about the code in the demo.
Since this was presented as a 'cool hack' [1], we're not expecting to push any new commits to this codebase, so any feedback will make it's way into our future work.

Thanks!

[1] http://unikernel.org/blog/2015/contain-your-unikernels/

[MurtyBavisetty]

Hello,

I am new to Linux kernel. I am currently using ubuntu 14.04 and trying to simulate the unikernels that you are talking about. I can build the unikernels for mysql, php and nginx. Only one of them stays up when started without the macvtap patch. I am not quite clear how the patch should be applied. Do i need to download the 4.1.3 Linux kernel in order to fix this or can I get away with building loadable kernel module (macvtap.ko) for macvtap alone. I tried to build the Linux kernel for 4.1.3 without success. Any details on this patch would be helpful to simulate this.

Thank you.
Murty

[mato]

Hi Murty,
Correct, without the macvtap patch you will only be able to run a single unikernel at a time. As documented in the patch, it applies to the 4.1.13 LTS kernel from kernel.org. Unfortunately I can't help with the specifics of building and patching for your system.
If you want to experiment with unikernels, I'd suggest trying out rumprun and MirageOS directly, this demo is not terribly suitable for new users.
Best,
Martin

[MurtyBavisetty]

Hi Martin,

Thank you very much for the feedback. That is very helpful. I would try
that using the rumprun and MirageOS.

Murty

On Wed, Jan 6, 2016 at 4:11 AM, Martin Lucina [email protected]
wrote:

Hi Murty,
Correct, without the macvtap patch you will only be able to run a single
unikernel at a time. As documented in the patch, it applies to the 4.1.13
LTS kernel from kernel.org. Unfortunately I can't help with the specifics
of building and patching for your system.
If you want to experiment with unikernels, I'd suggest trying out rumprun
and MirageOS directly, this demo is not terribly suitable for new users.
Best,
Martin

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Murty

[danehans]

@mato Do you know if the macvtap issue is being addressed upstream?

[mato]

@danehans Not at the moment. We're working on a way of getting equivalent functionality without the need for macvtap, which will work without the need to upgrade the kernel on existing systems. Having said that, the lack of proper namespace support in macvtap is a legit issue, so feel free to take it up with upstream.

[ish-xyz]

Hi, I have a question. This approach allow me to run a tiny VM with unikernel inside a container, right?
But I think (maybe wrongly) is better the reverse approach, so run the unikernel VM with only my container inside. What do you think? Is that possible?