2008/10/14 Daniel P. Berrange <berrange@xxxxxxxxxx>
On Wed, Oct 08, 2008 at 01:02:44PM +0400, Anton Protopopov wrote:This idea is not good - if someone starts the container outside of libvirt
> >
> > I do not undesrtand how it will simplify parsing: the iterator
> >> in parsing is an interface name, not bridge name. I attached a patch, so
> >> you will see how I do think about it :) (this patch includes all
> >> discussed changes)
> >>
> > My point of view is to use small count common methods to manipulate config
> > parameters. That is don't use array of differend methods for different types
> > of data. In current case we can transform format to be used common
> > functions.
> >
> > For example:
> > if we will use format
> > #BRIDGE-ifname=<>
> > we can drop openvzGetDefinedBridge and use one existing method
> > openvzReadConfigParam(veid, "#BRIDGE-ifname", value, sizeof(value));
using 'vzctl start 101', then the bridge config will not be activated.
The latest openvz code has explicit support in its configuration file
for setting the bridge device name, via a 'bridge=br0' attribute in
the NETIF= config setting. This can also be specified wehn invoking
the vzctl --netif_add command:
http://wiki.openvz.org/Virtual_Ethernet_device#Making_a_bridged_veth-device_persistent
So, if using openvz > 3.0.22, we should use this config param to record
the bridge and not invent our own.
OK, I will try to implement this in libvirt
To make upgrades easy, we should also use this config syntax for version
of openvz <= 3.0.22, and simply document that they need to create a helper
script /usr/sbin/vznetaddbr to make it work - they can even just grab
the helper script straight from newer openvz code. eg
http://git.openvz.org/?p=vzctl;a=blob;f=bin/vznetaddbr.in;h=81975b3275c7e60b229728ec500279b7ffca72d2;hb=41fb6973bc205c00e25ba73431110ac8e821d6c9
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Daniel
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