On 10/28/2016 05:30 PM, Michal Privoznik wrote:
28.10.2016 23:32, Michal Privoznik пишет:
On my host node i using system created bridge. example
brctl show br1 bridge name bridge id STP enabled interfaces br1 8000.0025907925d3 no eth1 vnet0 vnet2 vnet3
vnetN - guest net adapter, It added to bridge at guest's node started.
bridge defined as == <network> <name>internal</name> <forward mode="bridge"/> <bridge name="br1"/> </network> ==
But in guest config xml vnet[0-3] nod defined === <interface type='network'> <mac address='52:54:00:b3:b0:47'/> <source network='internal'/> <model type='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> === Sure. As I said - it is allocated at domain start up phase. Because
On 28.10.2016 14:17, Anton Gorlov wrote: that's when we know what's the next free device (or name that we can use for the device). If you start the domain, with your configuration libvirt will create vnetX and plug it into br1. Essentially, target device is runtime information, thus not present in config XML.
... but *is* in the status xml (i.e. the output of "visrh dumpxml $domain" while the domain is running, and also the xml provided on stdin to the qemu and network hooks when they are called). (also, what Vincent said in his email - names with the prefix "vnet" are assumed to be "leftover" from a previous instance of the domain (for better or worse) an replaced with an autogenerated name. But if you supply a name that doesn't start with "vnet", it will be used).