From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: Problems starting xend in xen 4.0 and 2.6.32.15 .. evtchn -> xen/evtchn under RHEL = not happy Date: Mon, 21 Jun 2010 18:12:40 -0400 Message-ID: <20100621221240.GB26574@phenom.dumpdata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Jia Rao Cc: xen-devel@lists.xensource.com, xen-users@lists.xensource.com List-Id: xen-devel@lists.xenproject.org On Mon, Jun 21, 2010 at 05:14:39PM -0400, Jia Rao wrote: > This issue has been posted before, but no clear solution, i am sending > again. > > 2.6.32 pvops dom0 booted with xen 4.0. However the xend can not start. > I believe that is something related to the *evtchn*. > I compile the CONFIG_XEN_DEV_EVTCHN=y in kernel, so i donot need to load it. > When the dom0 booted, I can see there is a entry for evtchn in /dev/xen > along with gntdev. > > But when xend starts, the evtchn in /dev/xen disappeared. and xend is not > properly started. > The error log in /var/log/xen/xend.log is the following: > > [2010-06-18 10:51:35 4685] INFO (SrvDaemon:332) Xend Daemon started > [2010-06-18 10:51:35 4685] INFO (SrvDaemon:336) Xend changeset: unavailable. > [2010-06-18 10:51:35 4685] ERROR (SrvDaemon:349) Exception starting xend > ((111, 'Connection refused')) > > I am using a centos 5, which has an old udev. I tried to modified the udev > rules in /etc/udev/rules.d/xen-backend. > rules and changed evtchn to xen-evtchn. No luck. Yeah. We added a patch that would change the name to 'xen/evtchn' instead of 'evtchn'. (git commit 376d908f52427591cef4acd172db9c3ef28676ec) I am not really sure what corresponding change in userspace goes with it..