Re: [PATCH] kvm tools: Improve init within a custom filesystem

[Avi Kivity <avi@redhat.com>]

On 08/24/2011 08:41 PM, Sasha Levin wrote:
> On Wed, 2011-08-24 at 20:30 +0300, Avi Kivity wrote:
> >  On 08/24/2011 07:19 PM, Sasha Levin wrote:
> >  >  This patch adds the following improvements:
> >  >
> >  >    * Automatically start dhcpcd. Since we provide usermode netowrking
> >  >  we should make it fully transparent to the user.
> >
> >  On my hosts, I have dhclient instead of dhcpd.
> >
>
> I was wondering if we should bring our own tiny dhcp client instead of
> assuming the host has one.
>
> Would it be better than assuming the host has it and then trying to
> figure out which one?
>

You don't really need a dhcp client, since you already have a 
communication channel - the kernel command line.  Read the IP address 
and other info from there, and poke it into the interface.

There is also the ip= kernel parameter, but I don't know if it works 
with a modular network driver.

I suggest something like "kvmtool.nic.$macaddr=$ip/$netmask 
kvmtool.defaultroute=$gateway" - this is interface name agnostic.

-- 
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.