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Re: [libvirt] [PATCH 05/16] LXC from native: migrate veth network configuration



Hi Dan,

On Fri, 2014-01-24 at 13:39 +0000, Daniel P. Berrange wrote:
> On Tue, Jan 14, 2014 at 02:49:54PM +0100, Cédric Bosdonnat wrote:
> > Some of the LXC configuration properties aren't migrated since they
> > would only cause problems in libvirt-lxc:
> >   lxc.network.ipv[46]: LXC driver doesn't setup IP address of guests
> 
> That doesn't make sense in a machine virt world, but has been
> requested a few times in the context of LXC and before that with
> OpenVZ. I guess we need a bug filed to request that we support
> this. Currently I have to workaround it with libvirt-sandbox's
> LXC support too
> 
> >   lxc.network.name
> 
> What is this config param for ? Is that the name of the guest
> visible NIC ? Currently we hardcode it ethNNN, assigning the
> NNN value incrementally. Guess that'd be another RFE bug.

Then I'll file those bugs.

> > ---
> >  src/lxc/lxc_native.c                         | 98 ++++++++++++++++++++++++++--
> >  tests/lxcconf2xmldata/lxcconf2xml-simple.xml |  5 ++
> >  2 files changed, 96 insertions(+), 7 deletions(-)
> > 
> > diff --git a/src/lxc/lxc_native.c b/src/lxc/lxc_native.c
> > index 6b62a5b..a9ef453 100644
> > --- a/src/lxc/lxc_native.c
> > +++ b/src/lxc/lxc_native.c
> > @@ -517,35 +517,119 @@ error:
> >      return -1;
> >  }
> >  
> > +static virDomainNetDefPtr
> > +lxcCreateNetDef(const char *type,
> > +                const char *link,
> > +                const char *mac,
> > +                const char *flag)
> > +{
> > +    virDomainNetDefPtr net = NULL;
> > +
> > +    if (VIR_ALLOC(net) < 0)
> > +        goto error;
> > +
> > +    if (flag) {
> > +        if (STREQ(flag, "up"))
> > +            net->linkstate = VIR_DOMAIN_NET_INTERFACE_LINK_STATE_UP;
> > +        else
> > +            net->linkstate = VIR_DOMAIN_NET_INTERFACE_LINK_STATE_DOWN;
> > +    }
> 
> Hmm, the LXC driver doesn't honour the 'linkstate' config
> parameter currently, so we need a bug about that filed,
> or feel free to do a patch for that.

I'ld prefer a patch, but doesn't that make sense at all if LXC driver
doesn't assign IP addresses?

--
Cedric



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