Re: [Xen-devel] Latest pvops dom0 kernel and missing /dev/xen/ev

To:	xen-devel@xxxxxxxxxxxxxxxxxxx, Pasi Kärkkäinen <pasik@xxxxxx>
Subject:	Re: [Xen-devel] Latest pvops dom0 kernel and missing /dev/xen/evtchn, xenstored and xend not starting
From:	Boris Derzhavets <bderzhavets@xxxxxxxxx>
Date:	Sat, 19 Jun 2010 05:44:03 -0700 (PDT)
Cc:	Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Delivery-date:	Sat, 19 Jun 2010 05:45:08 -0700
Dkim-signature:	v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s1024; t=1276951443; bh=Mfu6sVqSSFaHuAZzmMTk3jZil4B80PdFOwwfJqbtYRE=; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=jxIbb7y45+3D2M4wx1Xs5gp0UTJQKiK+zK2QNMxEfIU5vebjO4s10WbAU05QVV/5DC++adlqFL4PeZ6jW4Wh0Xh4aPAxZ8xJ+StACwRqAZ/ivrNyxa6+xsDqjYWd9ppHbbZLjLA7iUZZnnBEa8Lew4g//661dGxJNxv+nV46AVQ=
Domainkey-signature:	a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=Message-ID:X-YMail-OSG:Received:X-Mailer:Date:From:Subject:To:Cc:In-Reply-To:MIME-Version:Content-Type; b=ueN8LSXy6GgdtlUPpfTZAru64KRKidwtFdIoy/3K/0rilt53f/BJ+Juzo3UIsXx/L7cYB4gO+wW7EQjwzu/RHFlturQUSoCxr/ht3ZIA/6o8EAy+iqpNdtVXXHwBtLRkjIhBTTxrrUfCFBfn32UZmp2L/ydfxhJweyws57k2Eao=;
Envelope-to:	www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to:	<20100619123236.GD17817@xxxxxxxxxxx>
List-help:	<mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id:	Xen developer discussion <xen-devel.lists.xensource.com>
List-post:	<mailto:xen-devel@lists.xensource.com>
List-subscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe:	<http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender:	xen-devel-bounces@xxxxxxxxxxxxxxxxxxx

> Is the correct fix to upgrade Xen to 4.0.1-rcX ?

Via my experience rc2 should be good.
Similar question was asked by myself some time ago.
It's on the list.

Boris.
P.S. Some CS from xen-unstable ( libxc related) was back ported to xen-4-testing.hg.
There was also Keir's feed regarding this issue.

--- On Sat, 6/19/10, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: [Xen-devel] Latest pvops dom0 kernel and missing /dev/xen/evtchn, xenstored and xend not starting
To: xen-devel@xxxxxxxxxxxxxxxxxxx
Cc: "Jeremy Fitzhardinge" <jeremy@xxxxxxxx>
Date: Saturday, June 19, 2010, 8:32 AM

Hello,

I know there has been some discussion about this already,
but I just noticed it myself when I upgraded my testbox.

So, I have Xen 4.0.0, and the latest xen/stable-2.6.32.x dom0 kernel, ie. 2.6.32.15.

On system startup I notice xenstored and xend fail to start.
I look around and notice /dev/xen/ is empty.

I do "rmmod xen-evtchn" and "modprobe xen-evtchn" and then I have:

# ls -la /dev/xen
total 0
drwxr-xr-x 2 root root 60 Jun 19 15:22 .
drwxr-xr-x 20 root root 4580 Jun 19 15:20 ..
crw-rw---- 1 root root 10, 58 Jun 19 15:22 evtchn

Based on some earlier emails it has wrong major/minor?

Also "modprobe xen-gntdev" gives this:

# ls -la /dev/xen
total 0
0 crw-rw---- 1 root root 10, 58 Jun 19 15:22 evtchn
0 crw-rw---- 1 root root 10, 57 Jun 19 15:25 gntdev

So what's the actual problem here? I guess something got changed in the kernel,
and now xen tools/scripts should create the devnodes with a different major/minor?

Is the correct fix to upgrade Xen to 4.0.1-rcX ?

I just want to get this correct so I can update the wiki pages..
it seems many people hit this problem.

Thanks!

-- Pasi

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel

WARNING - OLD ARCHIVES

xen-devel

Re: [Xen-devel] Latest pvops dom0 kernel and missing /dev/xen/evtchn, xe