Re: [PATCH 1/2] Default connection URI if libvirt-daemon-driver-lxc is installed

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On 12/04/2014 05:08 AM, Cédric Bosdonnat wrote:
From: Cédric Bosdonnat <cedric.bosdonnat@xxxxxxx>

The default URI is set to lxc:/// if libvirt's lxc driver is installed
locally, but only if there is no kvm/xen URI to default to.
---
  virtManager/connect.py | 4 ++++
  1 file changed, 4 insertions(+)

diff --git a/virtManager/connect.py b/virtManager/connect.py
index 9c997da..ddda173 100644
--- a/virtManager/connect.py
+++ b/virtManager/connect.py
@@ -115,6 +115,10 @@ class vmmConnect(vmmGObjectUI):
                  return "qemu:///system"
              else:
                  return "qemu:///session"
+
+        if (os.path.exists("/usr/lib/libvirt/libvirt_lxc") or
+            os.path.exists("/usr/lib64/libvirt/libvirt_lxc")):
+            return "lxc:///"
          return None

      def cancel(self, ignore1=None, ignore2=None):


RH distros use /usr/libexec/libvirt_lxc, so we'd want to add that as well. I can fix that when applying though

Are you adding this patch for completeness, or because it's something that's needed/wanted in suse?

Personally I don't think this is a good idea though. While virt-manager can drive LXC, it's very different from qemu/xen particularly when creating VMs. I'm afraid a clueless user would run virt-manager for the first time, inadvertently end up connected to lxc, try to create a VM, and be confused like 'wheres the option for CDROM install? etc.

In practice I don't know how likely that is on Fedora though, not sure why a random user would end up with libvirt-lxc installed but not qemu unless it was done deliberately.

So I'd say if this is just a patch for completeness, it shouldn't go in. But if you guys are going to carry it regardless, then we can apply this, and I can add a 'python setup.py configure' option like --default-hypervisors to limit what virt-manager will connect to by default. That's probably useful to do anyways for freebsd bhyve guys at least

- Cole

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