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why nova live-migration doesn't work?

 

Hi :
    everyone.
    when I test live-migration ,strangely,no error ,but instance don't move.
    please help me
    why ?
    the instance.log as follow:
2012-08-10 06:47:24.815+0000: starting up
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin
QEMU_AUDIO_DRV=none /usr/bin/kvm -S -M pc-1.0 -enable-kvm -m 512 -smp
1,sockets=1,cores=1,threads=1 -name instance-00000034 -uuid
6c576b16-aabe-42d8-aae4-ef7d9ca4fbbd -nodefconfig -nodefaults -chardev
socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000034.monitor,server,nowait
-mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown
-drive
file=/var/lib/nova/instances/instance-00000034/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none
-device
virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1
-netdev tap,fd=20,id=hostnet0 -device
virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:5a:6f:fd,bus=pci.0,addr=0x3
-netdev tap,fd=21,id=hostnet1 -device
virtio-net-pci,netdev=hostnet1,id=net1,mac=fa:16:3e:76:ca:c6,bus=pci.0,addr=0x4
-chardev
file,id=charserial0,path=/var/lib/nova/instances/instance-00000034/console.log
-device isa-serial,chardev=charserial0,id=serial0 -chardev
pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -usb
-device usb-tablet,id=input0 -vnc 172.18.32.8:0 -k en-us -vga cirrus
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6
Domain id=1 is tainted: high-privileges
char device redirected to /dev/pts/4

It look like just a start up log

?...
thanks!

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