[libvirt] [PATCH 0/3] qemu: libvirt RDMA live migration support

[Michael R. Hines]

On 07/26/2013 02:16 PM, Eric Blake wrote:
> On 07/26/2013 11:47 AM, mrhines at linux.vnet.ibm.com wrote:
>> From: "Michael R. Hines" <mrhines at us.ibm.com>
>>
>> QEMU has in tree now planned for 1.6 support for RDMA-based live migration.
>>
>> Changes to libvirt:
>> 1. QEMU has a new 'setup' phase in their state machine.
>> 2. Expose the 'x-rdma' migration protocol URI.
>> 3. Expose the 'x-rdma-pin-all' capability for pre-registration of memory.
> The x- prefix means that the migration is still experimental; do we want
> to be codifying the use of experimental API into libvirt, or is it time
> for a patch to qemu to remove the x- prefix?  Back in the 1.5 timeframe,
> when RDMA was first proposed, the x- prefix made sense, but now that we
> are closer to qemu 1.6, and you are trying to get libvirt to drive it,
> that's a declaration of stability.
>

That's a good question. I'll consult with the community for guidance.

It has been very extensively tested, though - by several parties,
but I'll find out and be in touch.