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

[Trent Lloyd]

I think the issue here is that Stein's qemu comes from Disco which was
EOL before Bug #1848497 was fixed and so the change wasn't backported.

While Stein is EOL next month the problem is this makes live migrations
fail which are often wanted during OpenStack upgrades to actually get
through Stein onto Train. So I think we'll need to backport the fix.

-- 
You received this bug notification because you are a member of Ubuntu
OpenStack, which is subscribed to Ubuntu Cloud Archive.
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

To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-archive/+bug/1882416/+subscriptions