From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henrik Holst Subject: Re: strange problem with virtio on guest with over 3648M RAM Date: Wed, 07 May 2008 15:00:31 +0200 Message-ID: <4821A7EF.2000000@witsbits.com> References: <4821A7AE.8020402@witsbits.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: kvm-devel@lists.sourceforge.net Return-path: In-Reply-To: <4821A7AE.8020402@witsbits.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Henrik Holst skrev: > Hello KVM developers! > > We are experiencing a very strange problem: we have been testing > Ubuntu Hardy Heron Server as a guest (kvm-68 on the host) and when > using the virtio nic everything works fine until we give the guest > more than 3648 MiB of RAM. > > If we for example start with "-m 4096" then the ubuntu guest brings up > eth0 but it is impossible to get a dhcp address and if one sets a > static address no packets what so ever is leaving the guest. > > So there seam to be a problem with the virtio guest drivers when there > is more than 3648 MiB of ram available :), is there anyone else that > have experienced the same problems or are there people running virtio > on guest with more ram where everything is working ok? > > This problem could be local to ubuntu but I don't know of any other > distribution with virtio guest drivers out of the box. Forgot to mention that the e1000 guest drivers works perfectly fine regardless of the amount of ram on the guest. /Henrik Holst ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Don't miss this year's exciting event. There's still time to save $100. Use priority code J8TL2D2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone