[libvirt] [RFC v1 0/6] Live Migration with ephemeral host NIC devices

[Chen Fan]

my main goal is to add support migration with host NIC
passthrough devices and keep the network connectivity.

this series patch base on Shradha's patches on
https://www.redhat.com/archives/libvir-list/2012-November/msg01324.html
which is add migration support for host passthrough devices.

 1) unplug the ephemeral devices before migration

 2) do native migration

 3) when migration finished, hotplug the ephemeral devices


TODO:
  keep network connectivity on guest level by bonding device.

Chen Fan (6):
  conf: add ephemeral element for hostdev supporting migration
  qemu: Save ephemeral devices into qemuDomainObjPrivate
  qemu: add check ephemeral devices only for PCI host devices
  migration: Migration support for ephemeral hostdevs
  managedsave: move the domain xml handling forward to stop CPU
  managedsave: add managedsave support for ephemeral host devices

 docs/schemas/domaincommon.rng                      |  10 ++
 docs/schemas/network.rng                           |   5 +
 src/conf/domain_conf.c                             |  14 +-
 src/conf/domain_conf.h                             |   1 +
 src/conf/network_conf.c                            |  13 ++
 src/conf/network_conf.h                            |   1 +
 src/network/bridge_driver.c                        |   1 +
 src/qemu/qemu_command.c                            |  11 ++
 src/qemu/qemu_domain.c                             |   5 +
 src/qemu/qemu_domain.h                             |   3 +
 src/qemu/qemu_driver.c                             |  48 +++---
 src/qemu/qemu_migration.c                          | 182 ++++++++++++++++++++-
 src/qemu/qemu_migration.h                          |   9 +
 src/qemu/qemu_process.c                            |  12 ++
 tests/networkxml2xmlin/hostdev-pf.xml              |   2 +-
 tests/networkxml2xmlin/hostdev.xml                 |   2 +-
 tests/networkxml2xmlout/hostdev-pf.xml             |   2 +-
 tests/networkxml2xmlout/hostdev.xml                |   2 +-
 .../qemuxml2argv-controller-order.xml              |   2 +-
 .../qemuxml2argv-hostdev-pci-address-device.xml    |   2 +-
 .../qemuxml2argv-hostdev-pci-address.xml           |   2 +-
 .../qemuxml2argv-hostdev-scsi-autogen-address.xml  |  22 +--
 .../qemuxml2argv-hostdev-scsi-lsi-iscsi-auth.xml   |   4 +-
 .../qemuxml2argv-hostdev-scsi-lsi-iscsi.xml        |   4 +-
 .../qemuxml2argv-hostdev-scsi-lsi.xml              |   2 +-
 .../qemuxml2argv-hostdev-scsi-rawio.xml            |   2 +-
 .../qemuxml2argv-hostdev-scsi-readonly.xml         |   2 +-
 .../qemuxml2argv-hostdev-scsi-sgio.xml             |   2 +-
 .../qemuxml2argv-hostdev-scsi-shareable.xml        |   2 +-
 ...qemuxml2argv-hostdev-scsi-virtio-iscsi-auth.xml |   4 +-
 .../qemuxml2argv-hostdev-scsi-virtio-iscsi.xml     |   4 +-
 .../qemuxml2argv-hostdev-scsi-virtio-scsi.xml      |   2 +-
 ...emuxml2argv-hostdev-usb-address-device-boot.xml |   2 +-
 .../qemuxml2argv-hostdev-usb-address-device.xml    |   2 +-
 .../qemuxml2argv-hostdev-usb-address.xml           |   2 +-
 .../qemuxml2argv-hostdev-vfio-multidomain.xml      |   2 +-
 .../qemuxml2argvdata/qemuxml2argv-hostdev-vfio.xml |   2 +-
 .../qemuxml2argv-net-hostdev-multidomain.xml       |   2 +-
 .../qemuxml2argv-net-hostdev-vfio-multidomain.xml  |   2 +-
 .../qemuxml2argv-net-hostdev-vfio.xml              |   2 +-
 .../qemuxml2argvdata/qemuxml2argv-net-hostdev.xml  |   2 +-
 tests/qemuxml2argvdata/qemuxml2argv-pci-rom.xml    |   4 +-
 ...qemuxml2xmlout-hostdev-scsi-autogen-address.xml |  22 +--
 43 files changed, 340 insertions(+), 83 deletions(-)

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1.9.3