Gizmo Chicken wrote:
QUESTION: What, if anything, can I do so that I can use xl (in place of xm) with libvirt 1.0.2 and Xen 4.2.1 in Ubuntu 13.04?
Ensure xend is *not* running and then restart libvirtd. The libvirt libxl driver will only load when xend is not running.
BACKGROUND: I am testing a fully updated (as of March 27) installation of Ubuntu 13.04 that includes the following packages:
libvirt - version 1.0.2-0ubuntu9 xen-hypervisor-4.2-amd64 - version 4.2.1-0ubuntu1
Upon setting TOOLSTACK=xm in /etc/default/xen (as well as making a few needed tweaks to /etc/xen/xend-config.sxp), libvirt and virt-manager worked great. Yippee!
I guess that I should be happy that the xm toolstack still works with Xen 4.2.1 and quit while I'm ahead, but...
According to libvirt's documentation:
"libxl: Starting with Xen 4.2, the legacy XenD/xm toolstack is deprecated in favor of libxl, also commonly called libxenlight. libvirt supports this new Xen toolstack via the libxl driver. If XenD is enabled, the legacy xen driver consisting of the above mentioned channels will be used. If XenD is disabled, the libxl driver will be used."
See http://libvirt.org/drvxen.html.
In view of the above, I attempted to use xl in place xm by setting TOOLSTACK=xl in /etc/default/xen. And after doing so (both with and without, the above mentioned tweaks to /etc/xen/xend-config.sxp), I recieved the following error when attempting to start virt-manager:
Unable to connect to libvirt.
unable to connect to 'localhost:8000': Connection refused
Did the libxl driver even load? There should be some evidence of that in libvirtd.log. Has your libvirt package been built with the libxl driver enabled? Regards, Jim
Verify that: - A Xen host kernel was booted - The Xen service has been started
Libvirt URI is: xen:///
Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/connection.py", line 1027, in _open_thread self.vmm = self._try_open() File "/usr/share/virt-manager/virtManager/connection.py", line 1009, in _try_open flags) File "/usr/lib/python2.7/dist-packages/libvirt.py", line 102, in openAuth if ret is None:raise libvirtError('virConnectOpenAuth() failed') libvirtError: unable to connect to 'localhost:8000': Connection refused
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