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Re: [Xen-devel] [PATCH] Add support for netconsole driver used on bridge device with VIF attached



On Fri, 2013-05-03 at 15:36 +0100, Konrad Rzeszutek Wilk wrote:
> On Fri, May 03, 2013 at 10:11:10AM +0100, Ian Campbell wrote:
> > On Wed, 2013-05-01 at 12:55 +0100, Yuval Shaia wrote:
> > [... snip regurgitation of the thread...]
> > > 0001-Add-support-for-netconsole-driver-used-on-bridge-dev.patch
> > > 0 2001
> > > From: Yuval <yuval.shaia@xxxxxxxxxx>
> > > Date: Tue, 8 Jan 2013 10:08:45 +0200
> > > Subject: [PATCH] Add support for netconsole driver used on bridge device 
> > > with
> > >  VIF attached
> > 
> > Sorry, but this is not what I was asking for.
> > 
> > Please submit with a coherent changelog based on (i.e. digested from)
> > the previous discussion which explains why this change is necessary
> > including the background of why it is being made in this way and the
> > interaction with the bridging layer. I wasn't asking you to just cut and
> > paste that discussion and prepend it to the commit like that.
> > 
> > The key point is that we don't think that doing netconsole from dom0 to
> > a domU on the same host is a useful configuration or something which is
> > especially desirable to support but that because of how the bridge
> > handles netconsole netback needs to expose this hook in order that
> > netconsole can be enabled via a physical device on the same bridge to a
> > netserver elsewhere.
> 
> I would have thought that doing netconsole on a domU would be a worthwile
> attempt - especially to troubleshoot a guest?

Yes. But that's not what I said, nor what this patch does.

What this patch enables is dom0 doing netconsole *to* a guest. i.e.
dom0's console going to a guest running on the same host, which is not
an especially useful thing to do.

AFAIK netfront already supports domU netconsole.

Ian.


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