2008/10/14 Daniel P. Berrange <berrange@redhat.com>
On Wed, Oct 08, 2008 at 01:02:44PM +0400, Anton Protopopov wrote:
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));
This idea is not good - if someone starts the container outside of libvirt 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_...
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=81975b3275c7e60b...
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