privileged domains and networking

privileged domains and networking

[Jody Belka]

Just a couple of quick questions that were running around in my head
lately. First, can either of the bsd ports operate as privleged domains
yet? And second, is it currently possible to do something like the following:

  hard disk(s)                 nic(s)
       |                          |
       |                          |
 /-----------\              /-----------\
 | dom0-priv |   blk dev    | dom1-priv |
 |           |--------------|           |
 |      xend |  event chnl  |           |
 \-----------/              \-----------/


and then have xend create unprivleged domains with block device event
channels hooked up to domain 0, and network device event channels
hooked up to domain 1?


-- 
Jody Belka
knew (at) pimb (dot) org


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Re: privileged domains and networking

[Dave Feustel]

On Friday 26 November 2004 10:40 am, Jody Belka wrote:
> First, can either of the bsd ports operate as privleged domains yet?

There are 3 bsd ports (FreeBSD, NetBsd, OpenBSD).  Which two are
you referring to?

Thanks,
Dave Feustel
(running Openbsd 3.6)


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Re: privileged domains and networking

[Jody Belka]

On Fri, Nov 26, 2004 at 11:37:42AM -0500, Dave Feustel wrote:
> On Friday 26 November 2004 10:40 am, Jody Belka wrote:
> > First, can either of the bsd ports operate as privleged domains yet?
> 
> There are 3 bsd ports (FreeBSD, NetBsd, OpenBSD).  Which two are
> you referring to?

Ah, i hadn't realised Open had been done yet. let's change that then :)

"First, can any of the bsd ports operate as privleged domains yet?"


-- 
Jody Belka
knew (at) pimb (dot) org


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Re: privileged domains and networking

[M.A. Williamson]

> Just a couple of quick questions that were running around in my head 
> lately. First, can either of the bsd ports operate as privleged domains 
> yet?

Neither of the BSD ports to Xen (FreeBSD and NetBSD) have domain zero 
functionality (at this time). I don't think there are any plans to 
implement domain zero functionality for NetBSD, I don't know what the 
FreeBSD guys are intending to do.

> And second, is it currently possible to do something like the 
> following:
> 
>   hard disk(s)                 nic(s)
>        |                          |
>        |                          |
>  /-----------\              /-----------\
>  | dom0-priv |   blk dev    | dom1-priv |
>  |           |--------------|           |
>  |      xend |  event chnl  |           |
>  \-----------/              \-----------/
> 
> 
> and then have xend create unprivleged domains with block device event
> channels hooked up to domain 0, and network device event channels
> hooked up to domain 1?

That should work in principle. Xend configuration files should allow you to 
specify what domain to use as a backend for a device. I'm not sure anybody 
has actually ever tried it...

Cheers,
Mark


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Re: privileged domains and networking

[M.A. Williamson]

> Just a couple of quick questions that were running around in my head 
> lately. First, can either of the bsd ports operate as privleged domains 
> yet?

Neither of the BSD ports to Xen (FreeBSD and NetBSD) have domain zero 
functionality (at this time). I don't think there are any plans to 
implement domain zero functionality for NetBSD, I don't know what the 
FreeBSD guys are intending to do.

> And second, is it currently possible to do something like the 
> following:
> 
>   hard disk(s)                 nic(s)
>        |                          |
>        |                          |
>  /-----------\              /-----------\
>  | dom0-priv |   blk dev    | dom1-priv |
>  |           |--------------|           |
>  |      xend |  event chnl  |           |
>  \-----------/              \-----------/
> 
> 
> and then have xend create unprivleged domains with block device event
> channels hooked up to domain 0, and network device event channels
> hooked up to domain 1?

That should work in principle. Xend configuration files should allow you to 
specify what domain to use as a backend for a device. I'm not sure anybody 
has actually ever tried it...

Cheers,
Mark


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Discover which products truly live up to the hype. Start reading now. 
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Re: privileged domains and networking

[Dave Feustel]

On Friday 26 November 2004 12:27 pm, Jody Belka wrote:
> On Fri, Nov 26, 2004 at 11:37:42AM -0500, Dave Feustel wrote:
> > On Friday 26 November 2004 10:40 am, Jody Belka wrote:
> > > First, can either of the bsd ports operate as privleged domains yet?
> >
> > There are 3 bsd ports (FreeBSD, NetBsd, OpenBSD).  Which two are
> > you referring to?
>
> Ah, i hadn't realised Open had been done yet. let's change that then :)

My wording mislead you.  As far as I  know, none of the 3 BSDs have
been ported to Xen yet.

> "First, can any of the bsd ports operate as privleged domains yet?"


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Re: privileged domains and networking

[Christian Limpach]

On Fri, Nov 26, 2004 at 07:39:38PM -0500, Dave Feustel wrote:
> On Friday 26 November 2004 12:27 pm, Jody Belka wrote:
> > On Fri, Nov 26, 2004 at 11:37:42AM -0500, Dave Feustel wrote:
> > > On Friday 26 November 2004 10:40 am, Jody Belka wrote:
> > > > First, can either of the bsd ports operate as privleged domains yet?
> > >
> > > There are 3 bsd ports (FreeBSD, NetBsd, OpenBSD).  Which two are
> > > you referring to?
> >
> > Ah, i hadn't realised Open had been done yet. let's change that then :)
> 
> My wording mislead you.  As far as I  know, none of the 3 BSDs have
> been ported to Xen yet.

Both FreeBSD and NetBSD have been ported to Xen 2.0.
(also there are more than 3 BSDs...)

> > "First, can any of the bsd ports operate as privleged domains yet?"

The NetBSD port to Xen 1.2 is complete and works as a privileged
domain -- you can run a Xen 1.2 NetBSD only machine.  There's
currently no incentive to make the port to Xen 2.0 operate as a
privileged domain.

    christian



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Re: privileged domains and networking

[Jan Kundrát]

Dave Feustel wrote:
> My wording mislead you.  As far as I  know, none of the 3 BSDs have
> been ported to Xen yet.

If you are talking about non-domain0 functionality, NetBSD and FreeBSD 
are AFAIK available.

http://www.cl.cam.ac.uk/Research/SRG/netos/xen/faq.html#a1.3
So far we have stable ports of Linux 2.4, Linux 2.6, and NetBSD. Ports 
of FreeBSD and Plan 9 are nearing completion.

j.



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