On 06/17/2013 08:57 PM, Stefan Hajnoczi wrote:
On Sun, Jun 16, 2013 at 11:37:26PM +0800, Lei Li wrote:
2) Use different mechanism than current live migration.
The very basic work flow like:
qemu on the source (the source and destination are both on localhost)
|
V
Stop VM
|
V
Create threads
|
V
Page flipping through vmspice
|
V
MADV_DONTNEED the ram pages which are already flipped
|
V
Migration completes
As stopping VM first, we expect/resume the page flipping through vmspice
is fast enough to meet *live migration (low downtime).
Nice idea, that would allow low downtime QEMU upgrades.
Well, the idea is from Anthony Liguori and Michael Roth :)
Stefan
--
Lei
