Public bug reported: The Pike cloud archive has a regression, compared to Ocata, where in rebooting a VM via virsh causes the VM to powerdown, and then exit. The VM does not automatically power back up, but can be restarted.
Repro: Install 16.04.3 on an ARM64 host Fully update the install add-apt-repository cloud-archive:pike apt-get update apt-get install qemu-efi virt-manager libvirt-bin qemu-guest-agent qemu-system-aarch64 wget http://cdimage.ubuntu.com/ubuntu/releases/17.10/release/ubuntu-17.10-server-arm64.iso create a new session via ssh (session B) In session B: virt-install --accelerate --cdrom ubuntu-17.10-server-arm64.iso --disk size=10 --name ubuntu1710 --os-type linux --ram 1024 Once the install completes and the guest is at the login prompt, in session A: virsh reboot ubuntu1710 --mode acpi Observed result: The guest will powerdown as expected (from logs on session B), and then session B will be dumped back to the host shell. "virsh list" will not show the ubuntu1710 domain. Expected result: The guest powers back on, and boots back to the login prompt. Analysis: We observe these errors in various logs: Nov 1 13:29:16 ubuntu libvirtd[2441]: 2017-11-01 20:29:16.882+0000: 2441: error : qemuMonitorIORead:595 : Unable to read from monitor: Connection reset by peer Nov 1 13:29:16 ubuntu libvirtd[2441]: 2017-11-01 20:29:16.882+0000: 3101: error : qemuMonitorJSONCommandWithFd:309 : internal error: Missing monitor reply object 2017-11-01T20:29:16.538762Z qemu-system-aarch64: KVM_SET_DEVICE_ATTR failed: Group 4 attr 0x0000000000000001: No such device or address We debugged this to an issue in the QEMU in Pike being incompatible with the 4.10 kernel of 16.04.3. The QEMU in this version attempts to use the ITS migration functionality during reboot. 4.10 does not support this. When the IOCTL fails, QEMU calls abort(), thus killing the VM. We believe QEMU should not attempt to use this functionality if the host kernel does not support it. We suggest the attached patch to resolve the issue. ** Affects: qemu (Ubuntu) Importance: Undecided Status: New ** Tags: arm64 ** Attachment added: "qemu-patch.txt" https://bugs.launchpad.net/bugs/1731051/+attachment/5006070/+files/qemu-patch.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1731051 Title: (arm64) VM fails to properly reboot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1731051/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
