Re: [Qemu-devel] Sometimes qem-kvm hang at kvm_put_vcpu_events when virsh restore. Both version 0.12.5 / 0.13.0

[changlimin <changlimin@h3c.com>]

1. I create a guest use libvirt;
2. I start the guest use: virsh start guest;
3. I save the guest to a file, use: virsh save guest guest.save
4. I retore the guest, use : virsh retore guest.save
    Sometimes, the guest restore successful. sometimes restore fail. 
    I debug the code, the qemu-kvm hang at  kvm_put_vcpu_events, the process state is D, uninterruptable sleep. Only can killed by kill -9.
    I print the events when kvm_put_vcpu_events / kvm_get_vcpu_events, it is always different, event when restore successful

----- Original Message ----- 
From: "Mulyadi Santosa" <mulyadi.santosa@gmail.com>
To: "changlimin" <changlimin@h3c.com>
Cc: <qemu-devel@nongnu.org>
Sent: Wednesday, December 15, 2010 3:46 PM
Subject: Re: [Qemu-devel] Sometimes qem-kvm hang at kvm_put_vcpu_events when virsh restore. Both version 0.12.5 / 0.13.0


> 2010/12/15 changlimin <changlimin@h3c.com>:
>> BTW windows 2008 guest start failed at qem-kvm 0.13.0, but 0.12.5 start
>> success.
> 
> I am not qemu/kvm expert, but I think if you could provide either qemu
> instruction trace (using -d) or traces inside the guest OS itself
> (windows live debugger maybe?), it would  be much easier for people
> here to decipher the problem.
> 
> At least could you write down how do you invoke qemu-kvm back then?
> 
> -- 
> regards,
> 
> Mulyadi Santosa
> Freelance Linux trainer and consultant
> 
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com
>