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

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-01-21 at 17:17 +0000, Yuval Shaia wrote:

> When starting a VM which has virtual interface attached to the same 
> bridge (i.e vif = [type=netfront,bridge=xenbr0'] in vm.cfg) which is 
> used for netconsole the
> following message appears (after about 60 seconds) and VM creation 
> operation fails.
>       Error: Device 0 (vif) could not be connected. Hotplug scripts not 
> working.

I'm not sure how this can relate netconsole since this happens before
the guest even runs, doesn't it?

> As i see it, netconsole driver requires ndo_poll_controller from the
> device's controlling driver (function __netpoll_setup in
> net/core/netpoll.c), a thing that is not supported currently in
> xen_netback driver which is the driver that runs on dom0 and serve
> VM's virtual interface.

Which domain is using netconsole? Is it dom0 or domU? What parameters do
you give it?

I assume it is the domU but if that's the case I don't see why a netback
rather than netfront patch would be required.

Or is dom0 doing netconsole where the log receiver is a domU?

Ian.


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