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Re: [libvirt] [PATCH] qemu: fix missing ifname in qemu argument



On Wed, 2009-07-29 at 00:10 +0900, Ryota Ozaki wrote:
> Hi,
> 
> This patch adds missing ifname, which is a tap name for network/bridge
> configuration, in qemu argument of -net. Without this patch, a specified
> tap name, e.g., <target dev='tap01'/>, in a domain XML will be ignored.
> 
> Thanks,
>   ozaki-r
> 
> >From feeca4f2cecf5c6836f7aec6e004585f3b855bed Mon Sep 17 00:00:00 2001
> From: Ryota Ozaki <ozaki ryota gmail com>
> Date: Tue, 28 Jul 2009 23:46:12 +0900
> Subject: [PATCH] qemu: fix missing ifname in qemu argument
> 
> ---
>  src/qemu_conf.c |    6 ++++--
>  1 files changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/src/qemu_conf.c b/src/qemu_conf.c
> index 4fe4e39..48bf928 100644
> --- a/src/qemu_conf.c
> +++ b/src/qemu_conf.c
> @@ -1187,11 +1187,13 @@ qemuBuildHostNetStr(virConnectPtr conn,
>      switch (net->type) {
>      case VIR_DOMAIN_NET_TYPE_NETWORK:
>      case VIR_DOMAIN_NET_TYPE_BRIDGE:
> -        if (virAsprintf(str, "%stap%cfd=%s,vlan=%d%s%s",
> +        if (virAsprintf(str, "%stap%cfd=%s,vlan=%d%s%s%s%s",
>                          prefix ? prefix : "",
>                          type_sep, tapfd, vlan,
>                          (net->hostnet_name ? ",name=" : ""),
> -                        (net->hostnet_name ? net->hostnet_name : "")) < 0) {
> +                        (net->hostnet_name ? net->hostnet_name : ""),
> +                        (net->ifname ? ",ifname=" : ""),
> +                        (net->ifname ? net->ifname : "")) < 0) {

I think latest qemu.git fails if you pass ifname= with fd=

Older versions will just ignore it

<target dev='tap01'/> just means that libvirt will create the tap
interface as tap01

What exactly is the problem you're seeing?

Thanks,
Mark.


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