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[Corey Bryant <corey.bryant@xxxxxxxxxxxxx>]

** Also affects: cloud-archive/liberty
   Importance: Undecided
       Status: New

** Changed in: cloud-archive
       Status: New => Confirmed

** Changed in: cloud-archive/liberty
       Status: New => In Progress

** Changed in: cloud-archive/liberty
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/1641532

Title:
  machine-types trusty and utopic are not unique (depend on the qemu
  version)

Status in Ubuntu Cloud Archive:
  Confirmed
Status in Ubuntu Cloud Archive liberty series:
  In Progress
Status in qemu package in Ubuntu:
  In Progress
Status in qemu source package in Xenial:
  Confirmed
Status in qemu source package in Yakkety:
  Confirmed
Status in qemu source package in Zesty:
  In Progress

Bug description:
  Hi,

  I'm currently live-migrating many VMs from an old server to a new one,
  and some VM can't be live migrated.

  The source host is trusty with qemu-system-x86 1:2.3+dfsg-5ubuntu9.4~cloud2
  The destination host is xenial with qemu-system-x86 1:2.5+dfsg-5ubuntu10.6

  When the issue occurs, the destination host raises an error [1] and
  stop the migration process.

  The only difference I see between VMs where live migration works and
  those were it doesn't work is a different machine type.

  * migration works when VM have been created with pc-i440fx-vivid
  * migration doesn't work when VM have been created with pc-i440fx-utopic

  [1] the qemu error report by libvirt on the destination host

  2016-11-14 08:25:40.774+0000: starting up libvirt version: 1.3.1, package: 1ubuntu10.5 (Stefan Bader <stefan.bader@xxxxxxxxxxxxx> Thu, 06 Oct 2016 13:07:20 +0200), qemu version: 2.5.0 (Debian 1:2.5+dfsg-5ubuntu10.6), hostname: n7.tetaneutral.net
  LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=spice /usr/bin/kvm-spice -name a81e7133-9601-4432-86dd-a2401dcad8c2 -S -machine pc-i440fx-utopic,accel=kvm,usb=off -cpu Nehalem -m 256 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid a81e7133-9601-4432-86dd-a2401dcad8c2 -smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=2015.1.2,serial=fe2641d2-543a-4d65-b75f-6337bf4b8744,uuid=a81e7133-9601-4432-86dd-a2401dcad8c2' -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-a81e7133-9601-4432-86dd-a2401dcad8c2/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=discard -no-hpet -no-shutdown -boot strict=on -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive 'file=rbd:disks/a81e7133-9601-4432-86dd-a2401dcad8c2_disk.config:id=openstack-service:key=XXXXXXXXXXXX==:auth_supported=cephx\;none:mon_host=192.168.99.251\:6789\;192.168.99.252\:6789\;192.168.99.253\:6789,format=raw,if=none,id=drive-ide0-1-1,readonly=on,cache=none,aio=native' -device ide-cd,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1 -drive 'file=rbd:disks/volume-a82bb407-5ccb-4b0e-ba68-a0de1cd58cc3:id=openstack-service:key=XXXXXXXXXXXXXXXXXX:auth_supported=cephx\;none:mon_host=192.168.99.251\:6789\;192.168.99.252\:6789\;192.168.99.253\:6789,format=raw,if=none,id=drive-virtio-disk0,serial=a82bb407-5ccb-4b0e-ba68-a0de1cd58cc3,cache=none,aio=native' -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=43,id=hostnet0,vhost=on,vhostfd=45 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:37:fb:ba,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/var/lib/nova/instances/a81e7133-9601-4432-86dd-a2401dcad8c2/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -device usb-tablet,id=input0 -spice port=5916,addr=0.0.0.0,disable-ticketing,seamless-migration=on -k en-us -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vgamem_mb=16,bus=pci.0,addr=0x2 -incoming defer -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 -msg timestamp=on
  2016-11-14T08:25:44.216364Z qemu-system-x86_64: Unknown ramblock "/rom@etc/acpi/rsdp", cannot accept migration
  2016-11-14T08:25:44.216394Z qemu-system-x86_64: error while loading state for instance 0x0 of device 'ram'
  2016-11-14T08:25:44.216509Z qemu-system-x86_64: load of migration failed: Invalid argument

  Cheers,

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