On 04/18/2012 12:47 AM, 杨镭 wrote: > Hi: > > In our setup(libvirt 0.9.9 with Arch Linux with kernel 3.2+), when libvirt are > accessed simultaneously, say 8 createDomain requests,  there is a large > chance that `qemu -help` return incomplete stdout which cause kvm to be disabled. > > Another user have the same situation like us[1] and he suspected this being > the result of some race conditions. > That's now the 4th report I've seen from 3.2+ kernel users in other distros that are seeing strange libvirt behavior. One user reported that downgrading to 2.32 made the problems go away. So I think this is a kernel bug. However fedora 16 doesn't have the same issue on 3.3 kernel, so maybe we have a bug fix backported that other distros do not. See if the issue goes away with an older kernel, and if so, file a bug with your distro and ask them to take a look at the fedora kernel patch queue. - Cole -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list