https://bugzilla.kernel.org/show_bug.cgi?id=189941 Bug ID: 189941 Summary: rhel7.2 guest will hang after finishing save and restore operation Product: Virtualization Version: unspecified Kernel Version: 4.9.0-rc5 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: Robert.Hu@xxxxxxxxx Regression: No Environment: ------------ Host OS (ia32/ia32e/IA64):ia32e Guest OS (ia32/ia32e/IA64):ia32e Guest OS Type (Linux/Windows):linux kvm.git Commit:57d1da871b85c3a79e070d5cfc5ccb554ed839c4 qemu.git Commit:a92f7fe5a82ac9e8d127e92c5dce1a84064126da Host Kernel Version:4.9.0-rc5 Guest Kernel Version: Hardware:hsw-ep bdw-ex bdw-ep skl-s knl-d Bug detailed description: -------------------------- After saving the rhel7.2 guest,the saved guest will hang occasionally while the restore operation been done. Reproduce steps: ------------------------ 1. create the guest: qemu-system-x86_64 -enable-kvm -m 1024 -smp 4 -device virtio-net-pci,netdev=nic0,mac=00:16:3e:06:4e:13 -netdev tap,id=nic0,script=/etc/kvm/qemu-ifup -drive file=/root/ia32e_rhel7u2.qcow,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0 2. switch to qemu monitor and save the guest: (1)press "ctrl+alt+2" to the qemu monitor screen (2)migrate "exec:dd of=rhel7u2.img" (3)press "q" to exit 3.restore the guest: qemu-system-x86_64 -enable-kvm -m 1024 -smp 4 -incoming "exec:dd if=/root/rhel7u2.img" -device virtio-net-pci,netdev=nic0,mac=00:16:3e:06:4e:13 -netdev tap,id=nic0,script=/etc/kvm/qemu-ifup -drive file=/root/rhel7u2.qcow,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0 -serial file:serial.log Current result: -------------------- The guest hanging on the screen where it was saved while restoring it. Expected result: ---------------- Guest restored successfully and can get IP and run as normal. Add info: [root@bdw-ep ~]# qemu-system-x86_64 --enable-kvm -m 1024 -smp 4 -incoming "exec:dd if=/root/rhel7u2.img" -device virtio-net-pci,netdev=nic0,mac=00:16:3e:06:4e:13 -netdev tap,id=nic0,script=/etc/kvm/qemu-ifup -drive file=/root/rhel7u2.qcow,if=none,id=virtio-disk0 -device virtio-blk-pci,drive=virtio-disk0 -serial file:serial.log Receiving block device images Completed 100 % Completed 100 % 2662186+0 records in 2662186+0 records out 1363039232 bytes (1.4 GB) copied, 3.33819 s, 408 MB/s The guest serial log was empty while the guest hang on doing restoring process. -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
