We met a problem on Windows live migration handing. We use Xen 3.3’s
full virtualization mode to create and migrate the Windows VMs based on QEMU.
The error information is as follows:
1) log said the migration was successful. However, that migrated VM
on the destination hanged wherein CPU utilization kept about
2) Using XenTrace, found that the loop consisting of three events as
Event 1: VMEXIT by io instruction;
Event2: VMEXIT by acpi accesses;
Event3: VMEXIT by virtual interrupt.
We guess that acpi support in Xen qemu-dm was not compatible with
Windows in the migration process.
Would you have any suggestions?
We also took a look at the below discussions as