[Bug 1882416] Re: virtio-balloon change breaks rocky -> stein live migrate

[Dan Streetman]

> While Stein is EOL next month

No, Stein is alive until 2022:
https://ubuntu.com/about/release-cycle#ubuntu-openstack-release-cycle

>  Bug #1848497 was fixed

so this bug should probably be a dup of that bug, and that bug should
have UCA target stein added, right?

There is also bug 1847361 for qemu in Stein...

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Title:
  virtio-balloon change breaks rocky -> stein live migrate

Status in Ubuntu Cloud Archive:
  New
Status in qemu package in Ubuntu:
  New

Bug description:
  Live migrating a VM from a rocky env -> stein env doesn't work

  Source host (openstack rocky release):
  qemu-system-x86:
    Installed: 1:2.11+dfsg-1ubuntu7.26

  Destination host (openstack stein release):
  qemu-system-x86:
    Installed: 1:3.1+dfsg-2ubuntu3.7~cloud0

  Live Migration failure: internal error: qemu unexpectedly closed the monitor: 2020-05-24T22:47:19.677896Z qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10 read: a1 device: 1 cmask: ff wmask: c0 w1cmask:0
  2020-05-24T22:47:19.677922Z qemu-system-x86_64: Failed to load PCIDevice:config
  2020-05-24T22:47:19.677926Z qemu-system-x86_64: Failed to load virtio-balloon:virtio
  2020-05-24T22:47:19.677929Z qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:05.0/virtio-balloon'
  2020-05-24T22:47:19.678086Z qemu-system-x86_64: load of migration failed: Invalid argument: libvirt.libvirtError: internal error: qemu unexpectedly closed the monitor: 2020-05-24T22:47:19.677896Z qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10 read: a1 device: 1 cmask: ff wmask: c0 w1cmask:0'


  Please see https://bugs.launchpad.net/cloud-archive/+bug/1848497 for
  related issue

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