[libvirt] error: failed to connect to the hypervisor

[Daniel P. Berrange]

On Mon, Aug 03, 2009 at 08:56:48AM +0200, Dominik Klein wrote:
> Hi
> 
> I am running kvm-78 with libvirt 0.6.1 and see the following error from
> time to time when my linux-ha cluster tries to run "virsh domstate" to
> figure out a virtual machine's state:
> 
> error: failed to connect to the hypervisor
> 
> In syslog, I see:
> 
> libvirtd: 23:39:11.357: error : Failed to set close-on-exec file
> descriptor flag
> 
> Due to this error, the cluster assumes the machine is not running okay
> and reboots it in order to fix things.
> 
> This happened twice in 2 months with 10 machines being queried like that
> each minute (read: not too well reproducable)
> 
> What is this and how could I work around it or is this fixed in newer
> versions and so worth an upgrade?

I've never seen that error message before, but if I had to guess I'd
say that was a bug in 0.6.1 libvirt. There were quite a few really
nasty bugs in that release, which cause really wierd, random, and
inexplicable problems, so I'd really recommend updating to at
least 0.6.3 if at all possible.

Regards,
Daniel
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