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Re: [Xen-devel] Problems starting xend in xen 4.0 and .. evtchn -> xen/evtchn under RHEL = not happy

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

I am not really sure what corresponding change in userspace goes
with it..

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