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xen-users
RE: [Xen-users] How to tell which tapX interface belongs to which domain
212-798
> -----Original Message-----
> From: James Harper
> Sent: Tuesday, 9 October 2007 12:00
> To: 'Christian Horn'
> Cc: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: 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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