Hello,

I try to migrate a VM and I get this error :

loic@loic-VirtualBox:~/workspace/src/build/bin$ ./virsh --connect qemu:///system migrate  --live vmUbuntuPartage2CacheWriteBack qemu+ssh://192.168.10x.2x/system --unsafe
loic@192.168.10x.2x's password:
error: invalid argument: qemuDomainMigratePrepare3: unsupported flags (0x200)

Does somebody know this error?

I am working on windows 7, I have:

1)      Virtual box with two vms ubuntu desktop 12.04: “VM1” and “VM40”

2)      One shared hard drive build with virtual box: “newDiskSharedFev.vdi”

In my VM1:

1)      I have build one “vmUbuntuPartage” ubuntu server 12.10 on shared disk with this command:

sudo virt-install -n vmUbuntuPartage -r 1500 --disk path=/media/partage/newDiskSharedFev.vdi,bus=virtio,size=4,cache=writeback -c /home/loic/Downloads/ubuntu-12.04.1-server-i386.iso --network network=default,model=virtio --connect=qemu:///system --vnc -v

2)      I have download and built libvirt-0.10.0 (I can give configure command if necessary)

In my VM40:

1)      I install libvirt with apt-get

2)      I have mounted shared folder with “newDiskSharedFev.vdi”

So, in my VM1 I try to migrate my “vmUbuntuPartage” from VM1 to VM40 and I get error above.

Here my configuration file /etc/libvirt/qemu/ vmUbuntuPartage.xml

à

I try to change <driver name='qemu' type='raw'  cache='none or writeback or writetrough'/>

================
<!--
WARNING: THIS IS AN AUTO-GENERATED FILE. CHANGES TO IT ARE LIKELY TO BE
OVERWRITTEN AND LOST. Changes to this xml configuration should be made using:
  virsh edit vmUbuntuPartage
or other application using the libvirt API.
-->

<domain type='qemu'>
  <name>vmUbuntuPartage</name>
  <uuid>5d38cf86-d9c5-b0f2-cc03-982a1f18bede</uuid>
  <memory>1536000</memory>
  <currentMemory>1536000</currentMemory>
  <vcpu>1</vcpu>
  <os>
    <type arch='i686' machine='pc-1.0'>hvm</type>
    <boot dev='hd'/>
  </os>
  <features>
    <acpi/>
    <apic/>
    <pae/>
  </features>
  <clock offset='utc'/>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>restart</on_reboot>
  <on_crash>restart</on_crash>
  <devices>
    <emulator>/usr/bin/qemu-system-x86_64</emulator>
    <disk type='file' device='disk'>
      <driver name='qemu' type='raw'  cache='none'/>

    <source file='/media/partage/SharedDiskUbuntu.vdi'/>
      <target dev='vda' bus='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
    </disk>
    <disk type='block' device='cdrom'>
      <driver name='qemu' type='raw'/>
      <target dev='hdc' bus='ide'/>
      <readonly/>
      <address type='drive' controller='0' bus='1' unit='0'/>
    </disk>
    <controller type='ide' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
    </controller>
    <interface type='network'>
      <mac address='52:54:00:8b:b1:80'/>
      <source network='default'/>
      <model type='virtio'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
    </interface>
    <serial type='pty'>
      <target port='0'/>
    </serial>
    <console type='pty'>
      <target type='serial' port='0'/>
    </console>
    <input type='mouse' bus='ps2'/>
    <graphics type='vnc' port='-1' autoport='yes'/>
    <video>
      <model type='cirrus' vram='9216' heads='1'/>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
    </video>
    <memballoon model='virtio'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
    </memballoon>
  </devices>
</domain>
==================

Loïc Cloâtre