From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ryan Harper Subject: Re: PV on HVM network stops Date: Wed, 9 May 2007 14:31:44 -0500 Message-ID: <20070509193144.GM27552@us.ibm.com> References: <20070509155641.GK27552@us.ibm.com> <20070509171838.GL27552@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20070509171838.GL27552@us.ibm.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org * Ryan Harper [2007-05-09 12:42]: > * Ryan Harper [2007-05-09 11:07]: > > I've been running some tests using PV drivers in a linux HVM domain and > > have been unable to determine why after some period of time the network > > connection just stops working. I'm using the default bridging setup, > > I've seen this on xen-unstable changeset 15017, and all the way back to > > 14280. Guest and Host are pae. Any pointers on where to start > > debugging this? Nothing interesting shows up in xm dmesg, dmesg in the > > guest, none of the logs, nor any of the networking configuration output. > > > > If I pause the domain and then unpause, networking comes back. Does > this help narrow down where I should be looking for debugging this > issue? Actually, what works more reliably is to ifdown vifX.0; and then ifconfig vifX.0 0, which brings it back up, we get bridge topology state changes, and then network traffic resumes. Using tcpdump, I can see traffic arrive in the domain, but no traffic leaves the guest. -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx (512) 838-9253 T/L: 678-9253 ryanh@us.ibm.com