Description of problem:

I'm not able to spawn an instance in OpenStack Horizon UI, likely due to Nova ignororing acceleration settings and KVM nested virtualization is not supported by RHEL 6.4 kernel, hence VMX flag is not available no processor running Fedora 19 OpenStack controller.


Version-Release number of selected component (if applicable):

OpenStack installed according to https://wiki.brq.redhat.com/RHEVM-QE/OpenStackWorkshop

Nov 14 14:16:12 Installed: 1:python-novaclient-2.15.0-1.fc20.noarch
Nov 14 14:16:52 Installed: python-nova-2013.2-1.fc20.noarch
Nov 14 14:16:57 Installed: openstack-nova-common-2013.2-1.fc20.noarch
Nov 14 14:17:00 Installed: openstack-nova-api-2013.2-1.fc20.noarch
Nov 14 14:18:50 Installed: openstack-nova-console-2013.2-1.fc20.noarch
Nov 14 14:22:09 Installed: openstack-nova-compute-2013.2-1.fc20.noarch
Nov 14 14:22:51 Installed: openstack-nova-conductor-2013.2-1.fc20.noarch
Nov 14 14:23:10 Installed: openstack-nova-novncproxy-2013.2-1.fc20.noarch
Nov 14 14:23:14 Installed: openstack-nova-scheduler-2013.2-1.fc20.noarch
Nov 14 14:23:20 Installed: openstack-nova-cert-2013.2-1.fc20.noarch

How reproducible:

Always.

Steps to Reproduce:
1. Prepare OpenStack environment
2. Load cirrus image
3. Launch instance

Actual results:

Instance is stuck.

nova      3795 39.9  6.5 1409396 324116 ?      Rl   08:30   5:23 /usr/bin/qemu-system-x86_64 -machine accel=kvm -global virtio-blk-pci.scsi=off -nodefconfig -nodefaults -nographic -machine accel=kvm:tcg -m 500 -no-reboot -no-hpet -kernel /var/tmp/.guestfs-162/kernel.1827 -initrd /var/tmp/.guestfs-162/initrd.1827 -device virtio-scsi-pci,id=scsi -drive file=/var/lib/nova/instances/dc78c50d-7399-4b5f-9aa7-d1dedbbfd53b/disk,cache=none,format=qcow2,id=hd0,if=none -device scsi-hd,drive=hd0 -drive file=/var/tmp/.guestfs-162/root.1827,snapshot=on,id=appliance,if=none,cache=unsafe -device scsi-hd,drive=appliance -device virtio-serial -serial stdio -device sga -chardev socket,path=/tmp/libguestfsLxYA75/guestfsd.sock,id=channel0 -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 -append panic=1 console=ttyS0 udevtimeout=600 no_timer_check acpi=off printk.time=1 cgroup_disable=memory root=/dev/sdb selinux=0 TERM=linux

Expected results:

Instance will boot up.

Additional info:

* No errors is /var/log/nova/{conductor|compute}.log.
* Configuration of /etc/nova/nova.conf contains:
    libvirt_type=qemu
* Restarting host does not help, restarting services neither

* However, if the OpenStack Host is shutdown and started, instance that was in swawning mode can be started using Startup Instance button, resulting into:

qemu      3103 21.0  4.7 2040584 234776 ?      Sl   08:27   3:18 /usr/bin/qemu-system-x86_64 -name instance-00000005 -S -machine pc-i440fx-1.4,accel=tcg,usb=off -m 512 -smp 1,sockets=1,cores=1,threads=1 -uuid feeb9944-82b7-4e2f-9f15-f52738daa6dc -smbios type=1,manufacturer=Fedora Project,product=OpenStack Nova,version=2013.2-1.fc20,serial=3050e828-75a7-749b-c966-7a321d5e4beb,uuid=feeb9944-82b7-4e2f-9f15-f52738daa6dc -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000005.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/var/lib/nova/instances/feeb9944-82b7-4e2f-9f15-f52738daa6dc/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=24,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:6c:4f:43,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/var/lib/nova/instances/feeb9944-82b7-4e2f-9f15-f52738daa6dc/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -vnc 192.168.99.2:0 -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5