From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nathan March Subject: Re: VM spontaneously losing network on 10gig interface Date: Wed, 19 Sep 2012 12:07:56 -0700 Message-ID: <505A180C.1020606@gt.net> References: <5057AB8D.3040200@gt.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <5057AB8D.3040200@gt.net> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org 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