>>> On 8/6/2009 at 11:27 AM, in message
"Fischer, Anna" <anna.fischer@xxxxxx> wrote:
>> Subject: Re: [Xen-devel] HVM guest sees two NICs even though just one
>> vif configured
>> >>> On 8/6/2009 at 5:32 AM, in message
>> "Fischer, Anna" <anna.fischer@xxxxxx> wrote:
>> > I am running SLES10 with Xen 3.2 and I have configured an HVM guest.
>> What version of sles10 are you installing? In sles10 sp3, if you
>> install with our tools you automatically get PV drivers (both NIC and
>> disk) enabled. Our tools will generate the appropriate config file
>> (with type=netfront) and appropriate kernel boot option to disable
>> probing of the hard disk. Prior to sles10 SP3, one had to manually
>> enable PV drivers after installing using the emulated devices.
> But how can the tools in Dom0 know whether your guest runs PV drivers or
> not? This assumes that your guest runs SLES10 as well and has your PV driver
> packages installed. Only then you can set type=netfront. Otherwise, if you
> set type=netfront, and your guest does not have PV drivers installed, then
> your guest will not have any networking device that works...
When you install SLES11 or sles10 sp3 as a hvm guest, we automatically install
the guest with the PV drivers enabled in the guest since PV drivers give you
the best user experience for HVM guests.
> You are assuming that you know what the guest has installed, only then you
> can set the type=[netfront|ioemu] correctly.
When you install sles11 or sles10 sp3 as hvm guest on our platform (sles dom0),
we will by default enable PV drivers.
> In my case though, I don't know
> what the guest runs, so I would need it to be detected automatically. It
> works to some extend right now, and it can switch between emulated NIC and PV
> NIC automatically, if the guest does it properly. However, if the guest does
> not do it right (on purpose or by mistake), then I suddenly have a guest with
> two active NICs attached.
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