Re: [Xen-users] no network interface device drivers

[awg1@xxxxxxx]

> On Thu, Jan 09, 2014 at 03:16:09PM +0100, awg1@xxxxxxx wrote:
> > I've just moved my Dom0 from Fedora 19 to Centos 6.5 with the 3.12 kernel 
> > (http://wiki.centos.org/HowTos/Xen/Xen4QuickStart). ÂI have a standard 
> > bridge networking setup (external facing bridge to provide internet 
> > connectivity for DomUs, and internal bridges for local networks). ÂFrom 
> > some reason, with the CentOS setup, my DomUs can no longer connect to the 
> > external internet. ÂI've done various trouble shooting exercises including 
> > removing and adding back network interfaces, creating new DomUs, checking 
> > the logs, changing IPs but no luck. ÂHowever I did notice this in the 
> > console output of a new machine I was trying to create:
> > 
> > [ Â Â1.246218] Mobile IPv6
> > [ Â Â1.247110] NET: Registered protocol family 17
> > [ Â Â1.248009] Registering the dns_resolver key type
> > [ Â Â1.249084] registered taskstats version 1
> > [ Â Â1.250029] XENBUS: Device with no driver: device/vbd/51712
> > [ Â Â1.250986] XENBUS: Device with no driver: device/vif/0
> > [ Â Â1.251933] XENBUS: Device with no driver: device/vif/1
> > [ Â Â1.252877] /build/linux-rrsxby/linux-3.2.51/drivers/rtc/hctosys.c: 
> > unable to open rtc device (rtc0)
> > [ Â Â1.254630] Initializing network drop monitor service
> > [ Â Â1.255851] Freeing unused kernel memory: 576k freed
> > [ Â Â1.256916] Write protecting the kernel read-only data: 6144k
> > [ Â Â1.260591] Freeing unused kernel memory: 652k freed
> > [ Â Â1.261930] Freeing unused kernel memory: 688k freed
> > [ Â Â1.323063] Initialising Xen virtual ethernet driver.
> > 
> > From my reading, it seems the network interface is missing a driver which 
> > would, of course, explain my problems. ÂI checked the archives and the 
> > "XENBUS: Device with no driver" issue seems to have occurred back with xen 
> > 3.1 but I couldn't find much more about it since.
> > 
> > Does anyone have any suggestions?
> > 

> 
> Do you have xen-netback compiled in / loaded as module in Dom0?
> 
> Wei.
> 

Yes, if I run lsmod | grep xen the xen-netback module is loaded.

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