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.