[libvirt] A problem about live migration of kvm

Daniel P. Berrange berrange at redhat.com
Tue Jul 20 11:12:00 UTC 2010

On Mon, Jul 19, 2010 at 10:47:29AM +0800, 姚远 wrote:
> >From qemu-kvm-0.12.1, kvm has the function about live migration with
> non-shared storage. But I don't know how to use it. In the qemu monitor,
> "migrate -d tcp:" which is based on shared storage is going
> well. I don't know how to use the command of "-b or -i" or maybe I don't
> know the correct format of uri.
> the source and destination system is Fedora-13, and the version of kvm is
> qemu-kvm-0.12.3.

Migration with storage is not supported in libvirt until 0.8.2. The version
you are trying with F13 is too old. With virsh you would add the
--copy-storage-all or --copy-storage-inc flag to 'migrate'

> When I use the "migrate -d -b tcp:", the qemu monitor don't
> show nothing. When I use "info migrate",there shows "migrate status:
> failed". I don't know why? I hope someone who used this command successfully
> would help me, thank you.

If you're just using QEMU directly outside libvirt, then you're better
directing questions to qemu-devel mailing list

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