Re: [Qemu-devel] Migration ToDo list

[Orit Wasserman <owasserm@redhat.com>]

On 11/13/2012 06:18 PM, Juan Quintela wrote:
> 
> Hi
> 
> If you have anything else to put, please add.
> 
> Migration Thread
> * Plan is integrate it as one of first thing in December (me)
> * Remove copies with buffered file (me)
> 
> Bitmap Optimization
> * Finish moving to individual bitmaps for migration/vga/code
> * Make sure we don't copy things around
> * Shared memory bitmap with kvm?
> * Move to 2MB pages bitmap and then fine grain?
> 
> QIDL
> * Review the patches (me)
> 
> PostCopy
> * Review patches?
> * See what we can already integrate?
>   I remember for last year that we could integrate the 1st third or so
> 
> RDMA
> * Send RDMA/tcp/.... library they already have (Benoit)
Use RDS (Reliable Datagram Sockets), which allows us to use the same API
when using tcp or RDMA (me)
> * This is required for postcopy
> * This can be used for precopy
> 
> General
> * Change protocol to:
>   a) being always 16byte aligned (paolo said that is faster)
>   b) do scatter/gather of the pages?
> 
> Fault Tolerance
> * That is built on top of migration code, but I have nothing to add.
> 
> Any more ideas?
copyless networking - maybe use virtio zero copy mechanism? (me)
EPT/NPT dirty bits (will make the sync more expensive but will improve guest performance) 

Regards,
Orit
> 
> Later, Juan.
>