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[fedora-virt] live migration blocked until dump run in virsh



With standard F11 x86_64 host I was able to do live migration through
virsh but not inside virt-manager
(I got libvirtError: invalid argument in only tcp URIs are supported
for KVM migrations)

After enabling fedora-virt-preview repo, I now have:

gpxe-roms-qemu-0.9.7-4.fc11.noarch
libvirt-0.7.0-0.9.gite195b43.fc11.x86_64
libvirt-client-0.7.0-0.9.gite195b43.fc11.x86_64
libvirt-python-0.7.0-0.9.gite195b43.fc11.x86_64
perl-Sys-Virt-0.2.0-2.fc11.x86_64
python-virtinst-0.500.0-1.fc11.noarch
qemu-common-0.10.91-0.4.rc1.fc11.x86_64
qemu-img-0.10.91-0.4.rc1.fc11.x86_64
qemu-kvm-0.10.91-0.4.rc1.fc11.x86_64
qemu-system-x86-0.10.91-0.4.rc1.fc11.x86_64
virt-df-1.0.64-2.fc11.x86_64
virt-manager-0.8.0-1.fc11.noarch
virt-top-1.0.3-4.fc11.x86_64
virt-viewer-0.2.0-1.fc11.x86_64

I'm able to run live migration inside virt-manager: it completes, the
vm appears running on the
new host (I can also see the qemu process) but actually it is frozen
from an OS point of
view.
I found a sort of workaround doing this from inside virsh:

 virsh # list
 Id Name                 State
----------------------------------
  1 centos53             running
  2 centos53_node2       running
  3 prova2               running

virsh # dump 3 /tmp/dump_prova2.log
Domain 3 dumped to /tmp/dump_prova2.log

As soon that the command completes (about 10 seconds with a vm having
768MB of ram defined) I have again the vm runni ng and reachable
through network.....
Any insight?

Also, how to migrate a powered off vm?

Question: a vm migrated form host1 to host2 still appears on the
source host as shutoff.... but right click on it in virt-manager gives
the option to "run" it.....
What does it happens in this case? I think corruption, as the vm is
actually running on host2.... Or would I receive a sort of error
preventing me to do this?

Thanks,
Gianluca


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