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

[Dan Streetman]

*** This bug is a duplicate of bug 1848497 ***
    https://bugs.launchpad.net/bugs/1848497

ok i'm marking this as a dup of bug 1848497, and will handle prepping
the patch in that bug

** This bug has been marked a duplicate of bug 1848497
   virtio-balloon change breaks migration from qemu prior to 4.0

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https://bugs.launchpad.net/bugs/1882416

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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