We tested "3.13.0.161.211" and confirmed the issue was fixed. We installed "3.13.0.161.211" into two hosts and conducted the live-migration of Windows guest between the hosts more than 1000 times. The problems didn't occured in the Windows guest, which means "3.13.0.161.211" fixed the bug.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1791286 Title: The VM hang happens because of pending interrupts not reinjected when migrating the VM several times Status in linux package in Ubuntu: Incomplete Status in linux source package in Trusty: Fix Committed Bug description: [Impact] After the VM(Guest OS is Windows Server 2012R2) has been live-migrated several times, the screen is blacked out or freeze when the VM is connected via VNC. The Windows Guest OS Server has been investigated that all of kernel threads of Windows Server OS are waiting(idle state) for interrupt request(IRQ) from hypervisor. The following environment is tested: * Host OS: Ubuntu 14.04(kernel 3.13.0-40.69) * qemu-kvm_2.0.0+dfsg-2ubuntu1.22 * libvert-bin_1.2.2-0ubuntu13.1.5 * nova-compute_1:2014.2.3-0ubuntu1.2~cloud0 * GuestOS: Windows Server 2012R2 * virtio-win-0.1.126 [Fix] The patch set is needed: 673f7b4257a1 KVM: ioapic: reinject pending interrupts on KVM_SET_IRQCHIP 44847dea7975 KVM: ioapic: extract body of kvm_ioapic_set_irq 0bc830b05c66 KVM: ioapic: clear IRR for edge-triggered interrupts at delivery 0b10a1c87a2b KVM: ioapic: merge ioapic_deliver into ioapic_service [Test] Prepare two machines with the same environment mentioned above and run the following script. #!/bin/bash INSTANCE="test" FROM="elite" virsh -c qemu+ssh://ubuntu@${FROM}/system list| grep -q ${INSTANCE} if [[ $? != 0 ]]; then FROM="dixie"; TO="elite"; else TO="dixie" fi echo "= Migrating ${INSTANCE} from ${FROM} to ${TO} =" ssh ubuntu@${FROM} -- virsh migrate --live --domain ${INSTANCE} --desturi qemu+ssh://ubuntu@${TO}/system The VNC script I use to keep track of the VNC console is: #!/bin/bash INSTANCE="test" while true; do HOST="elite" virsh -c qemu+ssh://ubuntu@${HOST}/system list| grep -q ${INSTANCE} if [[ $? != 0 ]]; then HOST="dixie"; fi virt-viewer -c qemu+ssh://ubuntu@${HOST}/system test sleep 3 done To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791286/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
