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Re: [libvirt] [PATCH] openvz: swap <source bridge=...> with <target dev=...>





2008/9/29 Evgeniy Sokolov <evg openvz org>

On Mon, Sep 29, 2008 at 04:11:39PM +0400, Evgeniy Sokolov wrote:
2008/9/29 Evgeniy V. Sokolov <evg parallels com <mailto:evg parallels com>>



             This behaviour contradicts with description found in docs
      (in which
             <source> tag specify interface in host, not in
      container). I think,
             the previous bridge must be specified as
               <interface type='bridge'>
                 <mac address='00:16:3e:34:21:9e'/>
             -     <source bridge='eth10'/>
             +     <target dev='eth10'/>
               </interface>

         You are right. It is bug.

      Well, here is the patch, that fixes that behaviour.


  Your patch is half of fix. It require to fix openvzReadNetworkConf() in
  openvz_conf.c.


Here is a new one. Check it, please.
Patch looks good.
But currently it will work strange because of all drivers (except OpenVZ) in libvirt require specified <source bridge=""/> - it is generic.
With patch you need to specify both
<source bridge='eth10'/> - to satisfy common requirements
<target dev='eth10'/> - to create network

That is not right. The <target> element *must* be optional when creating
a new domain. If omitted, the driver must generated a suitable target
dev according to its desired naming scheme. Only the <source> element
can be compulsory

Agree with you. You say about "how should it be". I say about "how is it now".
Currenty OpenVZ driver don't generate device name - my mistake.
Is vnet$i (where $i is the number of automatically generated interface
name for this container) appropriate?




Daniel.



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