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xen-users
RE: [Xen-users] How to tell which tapX interface belongs to which domain
> On Mon, Oct 08, 2007 at 03:36:39PM +1000, James Harper wrote:
> > I've put together a script to get the traffic counters for a given
vm
> > interface (eg "vmif_traffic <domain> <if index>") and it works great
> > except when the interface backend is ioemu, because all the traffic
goes
> > through the tapX interface instead of the vif interface.
>
> I'm just doing the same, and besides not getting i/o yet i also miss
the
> number of tap-interfaces, would fit into 'xm list -l <domain>' output.
> An idea to get the mapping could be to have a look on what
tap-interfaces
> are in use bevore domain-creation and after, the interfaces in use now
> are the ones belonging to the domain.
>
> Had a look at the filehandles that are open for /dev/net/tun and the
> qemu-dm processed, and at the logfiles, without better hints.
I noticed that when I do a 'brctl show', the tap interface is on the
line before the vif interface, so I made use of that. Hopefully it's
always true!
James
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