Re: [Virtio-fs] Architecture diagram license

Re: [Virtio-fs] Architecture diagram license

[Fotis Xenakis]

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That would work great actually, thank you very much for the prompt response!

Fotis

________________________________
From: Stefan Hajnoczi
Sent: Monday, October 26, 2020 15:49
To: Fotis Xenakis
Cc: virtio-fs-list
Subject: Re: [Virtio-fs] Architecture diagram license

On Mon, Oct 26, 2020 at 09:20:36AM +0000, Fotis Xenakis wrote:
> As a student completing his thesis, which involved adding virtio-fs DAX support to OSv [1], it would be nice if I could include the architecture diagram [2] featured in the website.
> Yet, I see no licensing notice in the repo, so I guess it's copyrighted atm (?). Could you clarify on this, or ideally license it to allow usage in this context?

Hi Fotis,
There is no explicit license yet.

I created the diagram and suggest the following license:
https://creativecommons.org/licenses/by-sa/4.0/

Does that work for you?

Stefan

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Re: [Virtio-fs] Architecture diagram license

[Stefan Hajnoczi]

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On Mon, Oct 26, 2020 at 01:57:53PM +0000, Fotis Xenakis wrote:
> That would work great actually, thank you very much for the prompt response!

Okay, in that case this is my written confirmation that you may use the
https://creativecommons.org/licenses/by-sa/4.0/ license on the
architecture.svg file.

I'll send a separate patch to explicitly apply the license to the entire
virtio-fs website.

By the way, how are you using virtio-fs in your thesis? It would be
interesting to hear what you are working on.

Stefan

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Re: [Virtio-fs] Architecture diagram license

[Fotis Xenakis]

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On Mon, Oct 26, 2020 at 11:31:54PM +0000, Fotis Xenakis wrote:
> OSv is a unikernel happily running on QEMU/KVM, supporting different filesystems. Virtio-fs is a great fit for unikernels: it offers an escape route from rebuilding images for every change and very competitive performance just to name a couple of factors.
> I decided as part of my thesis to tackle read-only virtio-fs DAX window support on the OSv side (nothing big, no comparison to linux). This has been merged and works on OSv and I 've been working on evaluating it (spoiler: it works very nicely and performance is pretty good).
> Unfortunately, the thesis containing the detailed evaluation is mostly in Greek, in any case you can find it here https://github.com/foxeng/diploma. When time allows, I will also do an English write-up for sharing. If anyone's interested, I 'll make sure to post it here too!

You are welcome to write a guest post on the QEMU blog
(https://qemu.org/blog/) that gives an overview of OSv and the virtio-fs
device interface. I imagine people would be interested in learning about
both these topics.

The git repo for the QEMU website and blog is here:
https://gitlab.com/qemu-project/qemu-web

You can create a new blog post by dropping a Markdown file into _posts/.
Images can be added to screenshots/ directory.

The blog post can be sent to the QEMU mailing list using
git-send-email(1) with Thomas Huth <thuth@redhat.com> CCed. Please also
CC virtio-fs@redhat.com and we'll review it.
Thank you very much for the invite and the detailed instructions!
I 'd be very glad to do this and will go ahead upon first chance.

Fotis
Stefan

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Re: [Virtio-fs] Architecture diagram license

[Stefan Hajnoczi]

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On Mon, Oct 26, 2020 at 11:31:54PM +0000, Fotis Xenakis wrote:
> OSv is a unikernel happily running on QEMU/KVM, supporting different filesystems. Virtio-fs is a great fit for unikernels: it offers an escape route from rebuilding images for every change and very competitive performance just to name a couple of factors.
> I decided as part of my thesis to tackle read-only virtio-fs DAX window support on the OSv side (nothing big, no comparison to linux). This has been merged and works on OSv and I 've been working on evaluating it (spoiler: it works very nicely and performance is pretty good).
> Unfortunately, the thesis containing the detailed evaluation is mostly in Greek, in any case you can find it here https://github.com/foxeng/diploma. When time allows, I will also do an English write-up for sharing. If anyone's interested, I 'll make sure to post it here too!

You are welcome to write a guest post on the QEMU blog
(https://qemu.org/blog/) that gives an overview of OSv and the virtio-fs
device interface. I imagine people would be interested in learning about
both these topics.

The git repo for the QEMU website and blog is here:
https://gitlab.com/qemu-project/qemu-web

You can create a new blog post by dropping a Markdown file into _posts/.
Images can be added to screenshots/ directory.

The blog post can be sent to the QEMU mailing list using
git-send-email(1) with Thomas Huth <thuth@redhat.com> CCed. Please also
CC virtio-fs@redhat.com and we'll review it.

Stefan

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Re: [Virtio-fs] Architecture diagram license

[Fotis Xenakis]

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Okay, in that case this is my written confirmation that you may use the
https://creativecommons.org/licenses/by-sa/4.0/ license on the
architecture.svg file.
Thank you!
I'll send a separate patch to explicitly apply the license to the entire
virtio-fs website.

By the way, how are you using virtio-fs in your thesis? It would be
interesting to hear what you are working on.
OSv is a unikernel happily running on QEMU/KVM, supporting different filesystems. Virtio-fs is a great fit for unikernels: it offers an escape route from rebuilding images for every change and very competitive performance just to name a couple of factors.
I decided as part of my thesis to tackle read-only virtio-fs DAX window support on the OSv side (nothing big, no comparison to linux). This has been merged and works on OSv and I 've been working on evaluating it (spoiler: it works very nicely and performance is pretty good).
Unfortunately, the thesis containing the detailed evaluation is mostly in Greek, in any case you can find it here https://github.com/foxeng/diploma. When time allows, I will also do an English write-up for sharing. If anyone's interested, I 'll make sure to post it here too!

By the way, I 'd like to congratulate and thank everyone involved in the project for your amazing work, both in terms of concept, implementation and landing it upstream in the relevant projects. Personally, I find virtio-fs fills a much-needed gap and is an elegant, versatile solution at that too. In addition, it fits the unikernel use-cases very nicely: very roughly, what one could do with e.g. Docker and a bind mount can now be done with OSv and virtio-fs, usability-wise.
Finally, the virtiofsd Rust effort is very exciting: it's really nice seeing Rust used in real-world, big projects like this. Hope it delivers!

Fotis
Stefan

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Re: [Virtio-fs] Architecture diagram license

[Stefan Hajnoczi]

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On Mon, Oct 26, 2020 at 09:20:36AM +0000, Fotis Xenakis wrote:
> As a student completing his thesis, which involved adding virtio-fs DAX support to OSv [1], it would be nice if I could include the architecture diagram [2] featured in the website.
> Yet, I see no licensing notice in the repo, so I guess it's copyrighted atm (?). Could you clarify on this, or ideally license it to allow usage in this context?

Hi Fotis,
There is no explicit license yet.

I created the diagram and suggest the following license:
https://creativecommons.org/licenses/by-sa/4.0/

Does that work for you?

Stefan

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[Virtio-fs] Architecture diagram license

[Fotis Xenakis]

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Hello all,

As a student completing his thesis, which involved adding virtio-fs DAX support to OSv [1], it would be nice if I could include the architecture diagram [2] featured in the website.
Yet, I see no licensing notice in the repo, so I guess it's copyrighted atm (?). Could you clarify on this, or ideally license it to allow usage in this context?

Thank you,
Fotis Xenakis

[1] https://github.com/cloudius-systems/osv
[2] https://gitlab.com/virtio-fs/virtio-fs.gitlab.io/-/blob/master/architecture.svg

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