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Re: [libvirt-users] "failed to connect to the hypervisor"



On Wed, Oct 21, 2015 at 08:41:20AM +0200, Martin Kletzander wrote:
On Tue, Oct 20, 2015 at 11:59:03AM -0400, Ken D'Ambrosio wrote:
On 2015-10-20 05:33, Martin Kletzander wrote:
On Mon, Oct 19, 2015 at 03:57:39PM -0400, Ken D'Ambrosio wrote:
Hi, all.  Ubuntu host, attempting to get virsh working with
VirtualBox... and failing.  Here's what happens:

root foobox:~# virsh -c vbox:///session list
error: failed to connect to the hypervisor
error: internal error: unable to initialize VirtualBox driver API


What version of VirtualBox do you have installed?  The logging in that
driver is not particularly loud, so this won't tell you much more than
the fact that the initialization just failed.  It's most probably
something missing in your system or you have to new version installed.

You're on the money: I do have the latest and greatest (5.0.6) from
Oracle installed.  Despite some of its nifty features, I'm not wedded
to it, if downgrading will fix my underlying issue.  Is that the
recommended course of action?  Or is there something else I could do?


Well, of course the best thing would be adding support for it into
libvirt =)  If it is backwards compatible with the latest version that
has support in libvirt, then it shouldn't be a problem, I think, but I
have very limited experience with the vbox driver in libvirt.  Feel
free to have a look at the code and let me know, I'm sure we'll come
up with something.  In the meantime I'll compile the 5.0.8 version (so
I don't have to agree with the PUEL license) and see what I can do.


So I went ahead, compiled the 5.0.8, installed it, modified libvirt to
use the 5.0.8 the same way as it already does use 4.3.4 and, of
course, they are not compatible.  I then spent some time looking at
the code and trying to find out what needs to be changed, but it
turned out the code is not easy to follow for someone who hadn't
looked at it.  I don't have enough time to work on that, but it might
be a good idea for someone to implement.  And the patches would be
very welcome, I believe =)

Have a nice day,
Martin

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