[Xen-users] The problem about Windows live migration

["xudongxen" <xudongxen@xxxxxxx>]

Hi all,

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 48%.

2) Using XenTrace, found that the loop consisting of three events as follows:

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 follows:

http://forum.proxmox.com/threads/3759-Windows-XP-live-migration-fails-%28hangs-BSOD%29

http://forum.proxmox.com/threads/3530-Problems-with-Windows-live-migration-using-KVM

https://bugzilla.redhat.com/show_bug.cgi?id=602869

 

Many thanks!

 

Li xudong

 

2010-10-27

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xudongxen

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