[Qemu-devel] Re: [PATCH 0/3 v4] Live migration without shared storage

[Paolo Bonzini]

On 10/12/2009 06:09 PM, Michael Tokarev wrote:
> address@hidden wrote:
> > This series adds support for live migration without shared storage,
> > means copy the storage while migrating. It was tested with KVM.
> > Supports 2 ways to replicate the storage during migration:
> > 1. Complete copy of storage to destination 2. Assuming the storage is
> > cow based, copy only the allocated data, time of the migration will be
> > linear with the amount of allocated data (user responsibility to
> > verify that the same backend file reside on src and destination).
>
> Hmm. How about something like:
>
> migrate exec:"rsync file1 file2 ... remote: && nc remote port"

That can surely work to copy the base files, but it is a task for an 
upper level like libvirt.  For qemu, copying the copy-on-write data is 
enough.

Paolo