[Xen-users] Re: "link veth4 is missing"

[Tomasz Chmielewski <mangoo@xxxxxxxx>]

Jeffrey Buell wrote:
> Hi Thomas,
>
> I see the same problem you mentioned back in October:  "link veth4 is
> missing".  I'm using Xen 3.0.4-1.  Did you ever find a fix?  This seems to be
> a rare problem, little is found in a google search.
Yes I did found a solution to that problem just a couple of days ago 
when I upgraded to Xen 3.0.4.
I had to add something like "netloop.nloopbacks=16" to grub's menu.lst 
("module" line with the kernel):
kernel /boot/xen-3.0.gz dom0_mem=256M
module /boot/vmlinuz-2.6.16.33-xen root=/dev/LVM2/1 netloop.nloopbacks=16
module /boot/initrd-2.6.16.33-xen.img


Note that if you're using LILO instead of GRUB to start Xen [1], there 
is no way to pass parameters to the kernel (like "root=/dev/LVM2/1 
netloop.nloopbacks=16") in the example above - so, use GRUB (officially, 
LILO is unsupported anyway). This is probably why it didn't work for me 
before (I used LILO).
After you restart, check if you have ~16 veth devices with:

ip link show |grep veth


Hope this helps!

[1] http://wpkg.org/index.php/Running_Xen_with_LILO

--
Tomasz Chmielewski

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