Re: VM spontaneously losing network on 10gig interface

[Nathan March <nathan@gt.net>]

On 9/17/2012 4:00 PM, Nathan March wrote:
> Hi All,
>
> Having a very strange problem where a VM's bridge will spontaneously 
> stop bridging traffic. This only seems to occur on our 10gig 
> interfaces (intel x540 on ixgbe driver, mtu 9000), which are 2x links 
> bonded into bond0, then broken down into pvlan462/pvlan463/etc before 
> being bridged with the DomU's. Everything works great at first but 
> several hours after starting a large rsync traffic stops crossing the 
> bridge. Once it's stopped working it only affects that single VM on 
> that single interface. Other VM's on the same dom0 still have access 
> to the same affected vlan.

In case anyone else runs into something like this, it appears to be a 
bug in ixgbe. Switching to using the latest release as a module instead 
of the built in kernel driver, resolved this.

- Nathan