On 04/21/2010 08:57 AM, Yoshiaki Tamura wrote:
Kemari starts synchronizing VMs when QEMU handles I/O requests. Without this patch VCPU state is already proceeded before synchronization, and after failover to the VM on the receiver, it hangs because of this.
We discussed moving the barrier to the actual output device, instead of the I/O port. This allows you to complete the I/O transaction before starting synchronization.
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