> I'd bet on this being the one fixed by > 2bbadb08ce272d65e1f78621002008b07d1e0f03
But wasn't the breakage this fixes only added in qemu 4.0? He reports his change is from qemu 2.10 to 2.11. Unfortunately 2bbadb08 doesn't have a "fixes" line, maybe Ubuntu has something backported that makes the Ubuntu 2.11 being affected by it. I checked the Delta but there was nothing related backported that I could identify. But I agree, that first of all this should be a new bug instead of reviving the old one here. P.S. this will race as I sent the same via mail :-/, but I need to extend. I have now realized that the later report (comment #4) is about Openstack Train which at least on Ubuntu would come with qemu 4.0 - and since 2bbadb08 was released only with 4.1 that would be an open issue. -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1838569 Title: virtio-balloon change breaks post 4.0 upgrade Status in Ubuntu Cloud Archive: New Status in QEMU: New Status in qemu package in Ubuntu: Confirmed Bug description: We upgraded the libvirt UCA packages from 3.6 to 4.0 and qemu 2.10 to 2.11 as part of a queens upgrade and noticed that virtio-ballon is broken when instances live migrate (started with a prior 3.6 version) with: 2019-07-24T06:46:49.487109Z qemu-system-x86_64: warning: Unknown firmware file in legacy mode: etc/msr_feature_control 2019-07-24T06:47:22.187749Z qemu-system-x86_64: VQ 2 size 0x80 < last_avail_idx 0xb57 - used_idx 0xb59 2019-07-24T06:47:22.187768Z qemu-system-x86_64: Failed to load virtio-balloon:virtio 2019-07-24T06:47:22.187771Z qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:05.0/virtio-balloon' 2019-07-24T06:47:22.188194Z qemu-system-x86_64: load of migration failed: Operation not permitted 2019-07-24 06:47:22.430+0000: shutting down, reason=failed This seem to be the exact problem as reported by https://lists.gnu.org/archive/html/qemu-devel/2019-07/msg02228.html Listed the packages which changed: Start-Date: 2019-07-06 06:40:55 Commandline: /usr/bin/apt-get -y -o Dpkg::Options::=--force-confdef -o Dpkg::Options::=--force-confold install libvirt-bin python-libvirt qemu qemu-utils qemu-system qemu-system-arm qemu-system-mips qemu-system-ppc qemu-system-sparc qemu-system-x86 qemu-system-misc qemu-block-extra qemu-utils qemu-user qemu-kvm Install: librdmacm1:amd64 (17.1-1ubuntu0.1~cloud0, automatic), libvirt-daemon-driver-storage-rbd:amd64 (4.0.0-1ubuntu8.10~cloud0, automatic), ipxe-qemu-256k-compat-efi-roms:amd64 (1.0.0+git-20150424.a25a16d-0ubuntu2~cloud0, automatic) Upgrade: qemu-system-mips:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-system-misc:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-system-ppc:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), python-libvirt:amd64 (3.5.0-1build1~cloud0, 4.0.0-1~cloud0), qemu-system-x86:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), libvirt-clients:amd64 (3.6.0-1ubuntu6.8~cloud0, 4.0.0-1ubuntu8.10~cloud0), qemu-user:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), libvirt-bin:amd64 (3.6.0-1ubuntu6.8~cloud0, 4.0.0-1ubuntu8.10~cloud0), qemu:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-utils:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), libvirt-daemon-system:amd64 (3.6.0-1ubuntu6.8~cloud0, 4.0.0-1ubuntu8.10~cloud0), qemu-system-sparc:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-user-binfmt:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-kvm:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), libvirt0:amd64 (3.6.0-1ubuntu6.8~cloud0, 4.0.0-1ubuntu8.10~cloud0), qemu-system-arm:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-block-extra:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-system-common:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), qemu-system:amd64 (1:2.10+dfsg-0ubuntu3.8~cloud1, 1:2.11+dfsg-1ubuntu7.13~cloud0), libvirt-daemon:amd64 (3.6.0-1ubuntu6.8~cloud0, 4.0.0-1ubuntu8.10~cloud0) End-Date: 2019-07-06 06:41:08 At this point the instances would have to be hard rebooted or stopped/started to fix the issue for future live migration attemps To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-archive/+bug/1838569/+subscriptions