Date: Sun, 20 Jan 2013 10:26:42 +0100
From: a...@sigxcpu.org
To: chillermillerl...@hotmail.com
CC: 698...@bugs.debian.org
Subject: Re: [Pkg-libvirt-maintainers] Bug#698093: libvirt-bin: Enable Xen
libxl backend
On Sun, Jan 20, 2013 at 04:06:12AM -0500, 小龙 陈 wrote:
Date: Mon, 14 Jan 2013 08:14:46 +0100
From: a...@sigxcpu.org
To: chillermillerl...@hotmail.com; 698...@bugs.debian.org
Subject: Re: [Pkg-libvirt-maintainers] Bug#698093: libvirt-bin: Enable
Xen libxl backend
On Sun, Jan 13, 2013 at 07:05:12PM -0500, Xiao-Long Chen wrote:
Package: libvirt-bin
Version: 1.0.0-0ubuntu4ppa1~raring1
Please don't file bugs against Ubuntu versions.
Sorry about that. I should have read the guidelines for bug reporting in
Debian.
Severity: normal
Please enable the libxl backend for Xen in libvirt. Version 1.0.0 and
above
support this backend. Xen is already deprecating the old xm/xend
toolstack in
Xen 4.2 and is moving to the xl toolstack.
It's not that simple. We need to offer a migration path for existing
configurations. Do you want to work on that?
Cheers,
-- Guido
Would migration be necessary? As far as I know, libvirt will
automaticallyfall back to the current xen driver if xend is running.
It will only use xl ifxend is not started. Am I correct to assume
Did you try this? Last time I checked the libxml driver would take
precedence over xend.
I've tried it in another distro, but I haven't tested it in Debian yet. I'll
test it later today. But if you look at the source code:
http://libvirt.org/git/?p=libvirt.git;a=blob;f=src/libxl/libxl_driver.c;h=a8c4cae0e509a09e76ea344e3c0826cea04bfd71;hb=HEAD#l971
On line 971, libvirt will run /usr/sbin/xend status to check if xend is
running. If so, libxl falls back to xend.
Of course, just because something is in the source doesn't mean it works
correctly :) I'll test it to make sure.
Cheers,
Xiao-Long Chen
that any existing libvirt configuration for xen wouldhave xend started
automatically as it is required?
No. Libvirt doesn't setup the hypervisor it only looks for available
ones.
Cheers,
-- Guido
Cheers,Xiao-Long Chen
