I have tried 1 vcpu and 2 vcpus, both sometimes restore fail.
----- Original Message ----- From: "Mulyadi Santosa" <mulyadi.sant...@gmail.com> To: "changlimin" <changli...@h3c.com> Cc: <qemu-devel@nongnu.org> Sent: Wednesday, December 15, 2010 4:31 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 On Wed, Dec 15, 2010 at 15:08, changlimin <changli...@h3c.com> wrote: > 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 I could only say, i smell deadlock due to race condition here...but I have no further prove...how many (virtual) CPU did you simulate at that time? -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com
