The error in the log is:
unable to create fairsched node
TASK ERROR: start failed: command '/usr/bin/kvm -id 105 -chardev 'socket,id=qmp,path=/var/run/qemu-server/105.qmp,server,nowait' -mon 'chardev=qmp,mode=control' -vnc unix:/var/run/qemu-server/105.vnc,x509,password -pidfile /var/run/qemu-server/105.pid -daemonize -smbios 'type=1,uuid=dabb0474-1b34-4cea-9cf1-bdaab233542c' -name shifu -smp '2,sockets=1,cores=2,maxcpus=2' -nodefaults -boot 'menu=on,strict=on,reboot-timeout=1000' -vga std -no-hpet -cpu 'kvm64,hv_spinlocks=0xffff,hv_relaxed,+lahf_lm,+x2apic,+sep' -m 8192 -k en-us -cpuunits 1000 -device 'piix3-usb-uhci,id=uhci,bus=pci.0,addr=0x1.0x2' -device 'usb-tablet,id=tablet,bus=uhci.0,port=1' -device 'virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3' -iscsi 'initiator-name=iqn.1993-08.org.debian:01:3727996fd4b8' -drive 'if=none,id=drive-ide2,media=cdrom,aio=native' -device 'ide-cd,bus=ide.1,unit=0,drive=drive-ide2,id=ide2,bootindex=200' -device 'ahci,id=ahci0,multifunction=on,bus=pci.0,addr=0x7' -drive 'file=/dev/zvol/rpool/vm-105-disk-1,if=none,id=drive-sata0,aio=native,cache=none,detect-zeroes=on' -device 'ide-drive,bus=ahci0.0,drive=drive-sata0,id=sata0,bootindex=100' -rtc 'driftfix=slew,base=localtime' -global 'kvm-pit.lost_tick_policy=discard'' failed: exit code 1