From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Przywara Subject: Guest serial console hangs Date: Thu, 9 Sep 2010 14:07:49 +0200 Message-ID: <4C88CE15.9090703@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit Return-path: 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 List-Id: xen-devel@lists.xenproject.org Hi, for some weeks now I experience strange hangs in the HVM guest's serial console. I use serial="pty" or serial="file:foo" to redirect an HVM Linux guest's output (with console=ttyS0,115200n8 on the guest kernel cmdline). This usually works, but about half of the time the output (and it seems the guest, too) stops somewhere. I can continue guest operation by pressing a key in the guest's console (of course not in the file: case). Beside that it looks like it is one key behind, so to see the result of an ls for instance I have to press Enter twice. Has anyone an idea what could cause it or how to debug this? Thanks, Andre. P.S. I am using a (fairly) recent -unstable HV (about two weeks old), latest unstable xl tool set and a 2.6.32.19-pvops Dom0 kernel. -- Andre Przywara AMD-Operating System Research Center (OSRC), Dresden, Germany Tel: +49 351 448-3567-12