On a ppc64el Ocata deployment, instances launch but are unreachable, then the instances shut down.
#### Juju status
http://paste.ubuntu.com/25516162/
#### libvirt
2017-09-11 18:49:28.053+0000: starting up libvirt version: 2.5.0, package: 3ubuntu5.4~cloud0 (Openstack Ubuntu Testing Bot <email address hidden> Fri, 28 Jul 2017 14:04:18 +0000), qemu version: 2
.8.0(Debian 1:2.8+dfsg-3ubuntu2.3~cloud0), hostname: node-loudred.maas
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/kvm -name guest=instance-00000001,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var
/lib/libvirt/qemu/domain-4-instance-00000001/master-key.aes -machine pseries-zesty,accel=kvm,usb=off,dump-guest-core=off -cpu host -m 768 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 79d6f9b9
-ce0e-4ba4-9742-206eb89562ed -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-4-instance-00000001/monitor.sock,server,nowait -mon chardev=charmonitor
,id=monitor,mode=control -rtc base=utc,driftfix=slew -no-shutdown -boot strict=on -device pci-ohci,id=usb,bus=pci.0,addr=0x2 -drive file=/var/lib/nova/instances/79d6f9b9-ce0e-4ba4-9742-206eb89562ed/disk,form
at=qcow2,if=none,id=drive-virtio-disk0,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/var/lib/nova/instances/79d6f9b9-ce0e-4ba
4-9742-206eb89562ed/disk.swap,format=qcow2,if=none,id=drive-virtio-disk1,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk1,id=virtio-disk1 -netdev tap,fd=28,id=hostnet0,v
host=on,vhostfd=30 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:ee:cc:52,bus=pci.0,addr=0x1 -add-fd set=2,fd=32 -chardev pty,id=charserial0,logfile=/dev/fdset/2,logappend=on -device spapr-vty,
chardev=charserial0,reg=0x30000000 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on
Domain id=4 is tainted: host-cpu
char device redirected to /dev/pts/6 (label charserial0)
qemu:qemu_cpu_kick_thread: No such process2017-09-11 18:52:37.405+0000: shutting down, reason=crashed
#### nova-compute
2017-09-11 18:49:26.399 257659 WARNING nova.virt.libvirt.driver [req-29a9770e-612c-42c3-a997-cc47e58538ba 991f1e1738ab48039a28f9e4b3e0054e 842add06e52e41bd923c3d4476e3747b - - -] USB tablet requested for gue
sts by host configuration. In order to accept this request VNC should be enabled or SPICE and SPICE agent disabled on host.
2017-09-11 18:52:53.114 257659 WARNING nova.compute.manager [req-37f4920a-2156-406d-8cf1-f02ba416d310 - - - - -] [instance: 79d6f9b9-ce0e-4ba4-9742-206eb89562ed] Instance shutdown by itself. Calling the stop
API. Current vm_state: active, current task_state: None, original DB power_state: 1, current VM power_state: 4
I manually stopped/started the libvirtd service on the compute nodes, confirmed that the service was active (running).
As soon as I start instances, there is a kernel OOPS, the corresponding qemu instance log shows a crash, and the libvirtd logs show errors.
See attached.