yup, I have to use cpu_mode=host-passthrough to get vms booting up. On 12/14/2016 12:13 PM, David Moreau Simard wrote: > Hi, > > CentOS 7.3 was released yesterday and a newer version of qemu-kvm-ev > was shipped as part of this release if you have the CentOS > Virtualization SIG repositories enabled. > > If you're using RDO >= Newton, you will have this repository enabled. > It was not yet enforced in the Mitaka release so you might or might > not have it, depending on your deployment. > Older releases of OpenStack may also be affected but they are not > proactively tested anymore due to EOL. > > There is currently a known issue when using the following > configuration in nova for compute: > == > virt_type=qemu > cpu_mode=host-model > == > > This combination will yield in failed attempts at creating instances > and you will see errors like these in nova-compute.log [1] or the > libvirt logs [2]. > The problem boils down to libvirt trying to pass a cpu extension that > is unknown to qemu: > == > qemu-kvm: CPU feature arat not found > == > > There is a bugzilla [3] for this issue but in the meantime users are > encouraged to work around the issue by setting "cpu_mode=none" if they > are using the qemu (not KVM) hypervisor. > Please note that Nova defaults the 'cpu_mode' parameter to > 'host-model' [4] if 'cpu_mode' is not explicitely configured and > 'virt_type' is 'qemu' so if you're running into this issue, you will > need to explicitely configure it. > > [1]: http://logs.openstack.org/76/409476/4/check/gate-puppet-openstack-integration-4-scenario003-tempest-centos-7/8881991/logs/nova/nova-compute.txt.gz#_2016-12-13_16_39_50_832 > [2]: http://logs.openstack.org/76/409476/4/check/gate-puppet-openstack-integration-4-scenario003-tempest-centos-7/8881991/logs/libvirt/qemu/instance-00000001.txt.gz > [3]: https://bugzilla.redhat.com/show_bug.cgi?id=1371617 > [4]: http://git.openstack.org/cgit/openstack/nova/tree/nova/virt/libvirt/driver.py?id=146b27f22327f8d60c1017c22ccf18d0e16f1eb7#n3411 > > David Moreau Simard > Senior Software Engineer | Openstack RDO > > dmsimard = [irc, github, twitter] > > _______________________________________________ > OpenStack-operators mailing list > OpenStack-operators at lists.openstack.org > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators >