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

[Wei Liu <wei.liu2@xxxxxxxxxx>]

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).  I have a standard bridge 
> networking setup (external facing bridge to provide internet connectivity for 
> DomUs, and internal bridges for local networks).  From some reason, with the 
> CentOS setup, my DomUs can no longer connect to the external internet.  I've 
> done various trouble shooting exercises including removing and adding back 
> network interfaces, creating new DomUs, checking the logs, changing IPs but 
> no luck.  However I did notice this in the console output of a new machine I 
> was trying to create:
> 
> [    1.246218] Mobile IPv6
> [    1.247110] NET: Registered protocol family 17
> [    1.248009] Registering the dns_resolver key type
> [    1.249084] registered taskstats version 1
> [    1.250029] XENBUS: Device with no driver: device/vbd/51712
> [    1.250986] XENBUS: Device with no driver: device/vif/0
> [    1.251933] XENBUS: Device with no driver: device/vif/1
> [    1.252877] /build/linux-rrsxby/linux-3.2.51/drivers/rtc/hctosys.c: unable 
> to open rtc device (rtc0)
> [    1.254630] Initializing network drop monitor service
> [    1.255851] Freeing unused kernel memory: 576k freed
> [    1.256916] Write protecting the kernel read-only data: 6144k
> [    1.260591] Freeing unused kernel memory: 652k freed
> [    1.261930] Freeing unused kernel memory: 688k freed
> [    1.323063] Initialising Xen virtual ethernet driver.
> 
> From my reading, it seems the network interface is missing a driver which 
> would, of course, explain my problems.  I 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.

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