Hello
I'm having problem using migration. I'm working on ubuntu 10.4 and this versions of libvirt and virsh:
virsh # version
Compiled against library: libvir 0.7.5
Using library: libvir 0.7.5
Using API: QEMU 0.7.5
Running hypervisor: QEMU 0.12.3

This is the error.

virsh # migrate scompi1 qemu+ssh://rionegro/system
error: Unknown failure

This is the log on the destination, that show that there is no communication problem, but it has a problem starting the guest on destination.

radic@rionegro:~$ sudo cat /var/log/libvirt/qemu/scompi1.log
[sudo] password for radic:
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-0.12 -enable-kvm -m 4096 -smp 4 -name scompi1 -uuid 355123af-b683-9fa6-ca31-10506c9ab9da -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/scompi1.monitor,server,nowait -monitor chardev:monitor -boot c -drive file=/home/radic/mvdata/imagenes/scompi1.img,if=ide,index=0,boot=on,format=raw -drive if=ide,media=cdrom,index=2,format=raw -net nic,macaddr=52:54:00:05:d1:2a,vlan=0,model=virtio,name=virtio.0 -net tap,fd=33,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial chardev:serial0 -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus -incoming tcp:0.0.0.0:49153
char device redirected to /dev/pts/1
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-0.12 -enable-kvm -m 4096 -smp 4 -name scompi1 -uuid 355123af-b683-9fa6-ca31-10506c9ab9da -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/scompi1.monitor,server,nowait -monitor chardev:monitor -boot c -drive file=/home/radic/mvdata/imagenes/scompi1.img,if=ide,index=0,boot=on,format=raw -drive if=ide,media=cdrom,index=2,format=raw -net nic,macaddr=52:54:00:05:d1:2a,vlan=0,model=virtio,name=virtio.0 -net tap,fd=33,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial chardev:serial0 -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus -incoming tcp:0.0.0.0:49154
char device redirected to /dev/pts/2
LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-0.12 -enable-kvm -m 4096 -smp 4 -name scompi1 -uuid 355123af-b683-9fa6-ca31-10506c9ab9da -chardev socket,id=monitor,path=/var/lib/libvirt/qemu/scompi1.monitor,server,nowait -monitor chardev:monitor -boot c -drive file=/home/radic/mvdata/imagenes/scompi1.img,if=ide,index=0,boot=on,format=raw -drive if=ide,media=cdrom,index=2,format=raw -net nic,macaddr=52:54:00:05:d1:2a,vlan=0,model=virtio,name=virtio.0 -net tap,fd=33,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial chardev:serial0 -parallel none -usb -vnc 127.0.0.1:0 -vga cirrus -incoming tcp:0.0.0.0:49155
char device redirected to /dev/pts/2

I'm attaching the xml of the scompi1 that i'm trying to migrate.
I'd apprciate a lot any help.
Marcela