Re: Is it possible to live migrate guest OS'es between different versions of kvm/qemu-kvm?

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Hey guys,

next try is without libvirt, but still no joy.

After issuing 'migrate -d <url>' on my sending host (qemu-kvm 0.11.0), I get the following output on the receiving host (qemu-kvm 0.12.4):

(qemu) Unknown savevm section or instance 'slirp' 0
load of migration failed

... leaving my vm broken.

Am I doing something wrong, or is the format of the savevm file just different and should I abandon all hope of ever doing a live migration to a newer version of qemu-kvm?

Thanks in advance,


Nils

---

Here are my upstart options on the 'sender':

/usr/bin/kvm -S \
        -M pc-0.11 \
        -enable-kvm \
        -m 512 \
        -smp 2,sockets=2,cores=1,threads=1 \
        -name testserver \
        -uuid 890a0156-0542-32d8-66d7-b36a711084cc \
-monitor unix:/var/lib/libvirt/qemu/testserver.monitor,server,nowait \
        -boot c \
-drive file=/dev/disk/by-path/ip-192.168.3.100:3260-iscsi-iqn.2003-10.com.lefthandnetworks:lefthand0:64:testserver-lun-0,if=virtio,boot=on \
        -drive media=cdrom \
        -usb \
        -vnc 0.0.0.0:10 \
        -k en-us \
        -vga cirrus &

And the 'receiver':

/usr/bin/kvm -S \
        -M pc-0.11 \
        -enable-kvm \
        -m 512 \
        -smp 2,sockets=2,cores=1,threads=1 \
        -name testserver \
        -uuid 890a0156-0542-32d8-66d7-b36a711084cc \
        -nodefaults \
-chardev socket,id=monitor,path=/var/lib/libvirt/qemu/testserver.monitor,server,nowait \
        -mon chardev=monitor,mode=readline \
        -boot c \
-drive file=/dev/disk/by-path/ip-192.168.3.100:3260-iscsi-iqn.2003-10.com.lefthandnetworks:lefthand0:64:testserver-lun-0,if=none,id=drive-virtio-disk0,boot=on \
        -drive if=none,media=cdrom,id=drive-ide0-1-0 \
-device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \ -device virtio-blk-pci,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0 \
        -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
        -chardev pty,id=serial0 \
        -device isa-serial,chardev=serial0 \
        -usb \
        -vnc 0.0.0.0:0 \
        -k en-us \
        -vga cirrus \
        -incoming tcp:0:4444 &
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