[kernel-xen] xen-pciback in 3.8.x - Also Too many frags error

[Steven Haigh]

On 8/03/2013 12:57 AM, Rob Lazzurs wrote:
> Hello,
>
> First off sorry for breaking the thread but I have only just joined the
> list.
>
> We are experiencing this issue with the latest Xen kernels and have
> tried turning off offloading on the interface and we are still seeing
> the errors described in this thread.
>
> Has anyone else here found any other solutions OR could we get the
> RPMs/SRPMs for the older kernels so we can run those for now?

Hi Rob,

Reports say this has been happening since before 3.7.9 - so I'm not sure 
when this fault actually occurred.

The people who fixed the issue did so by disabling all offloading in the 
DomU (eth0) and on xenbr0 (the bridge on the Dom0).

It may also have something to do with the network adapter. One report 
was a realtek adapter present in the machine caused it to happen. 
Changing this Ethernet adapter to an Intel desktop adapter and the 
problems went away...

As such, I'm not quite sure if there is a silver-bullet fix at the 
moment. It seems to be that the problem always existed, however the 
patch for XSA-39 to prevent a DoS caused it to become apparent - ie shut 
down the interface.

This thread seems to have some movement - but not a great deal of info 
quite yet:
http://lists.xen.org/archives/html/xen-devel/2013-03/msg00404.html

I'd suggest you post there as well.

-- 
Steven Haigh

Email: netwiz at crc.id.au
Web: https://www.crc.id.au
Phone: (03) 9001 6090 - 0412 935 897
Fax: (03) 8338 0299

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