Release of libvirt-7.7.0

[Jiri Denemark]

The 7.7.0 release of both libvirt and libvirt-python is tagged and
signed tarballs and source RPMs are available at

    https://libvirt.org/sources/
    https://libvirt.org/sources/python/

Thanks everybody who helped with this release by sending patches,
reviewing, testing, or providing any other feedback. Your work is
greatly appreciated.

* New features

  * Add support for Fibre Channel VMID

    New VM element ``<fibrechannel appid=''/>`` was added to allow users to set
    their ``appid`` for each VM which will be used by kernel to create Fibre
    Channel VMID. This allows various QoS levels, access control or collecting
    telemetry data per VM.

* Improvements

  * virsh: Allow XML validation for define of: storage pool, network, secret,
    nwfilter, interface

    * Add flag ``VIR_STORAGE_POOL_DEFINE_VALIDATE`` to validate storage pool
      input xml. For virsh, users can use it as ``virsh pool-define --validate``.
    * Add flag ``VIR_NETWORK_DEFINE_VALIDATE`` to validate network input xml. For
      virsh, users can use it as ``net-define --validate``.
    * Add flag ``VIR_SECRET_DEFINE_VALIDATE`` to validate secret input xml. For
      virsh, users can use it as ``secret-define --validate``.
    * Add flag ``VIR_NWFILTER_DEFINE_VALIDATE`` to validate nwfilter input xml.
      For virsh, users can use it as ``nwfilter-define --validate``.
    * Add flag ``VIR_INTERFACE_DEFINE_VALIDATE`` to validate interface input xml.
      For virsh, users can use it as ``iface-define --validate``.

  * Add SecurityManager APIs for labeling network devices

    New ``virSecurityManagerSetNetdevLabel`` and ``virSecurityManagerSetNetdevLabel``
    APIs are introduced and implemented in the Apparmor security driver.
    The qemu driver uses the APIs to label vhostuser ports on hotplug and
    restore labeling on unplug.

  * vmx: Parse vm.genid and support super wide SCSI bus

    The genid attribute is now reported for VMX guests. Libvirt can now
    properly process super wide SCSI bus (64 units).

  * qemu: Lifecycle action (``on_poweroff``/``on_reboot``) handling improvements

    The handling of lifecycle actions was fixed and improved in multiple ways:

    - ``restart-rename`` action was forbidden

      The action was never properly implemented in the qemu driver and didn't
      actually result in a restart of the VM but rather termination. The qemu
      driver now rejects such configurations.

    - ``preserve`` action was forbidden

      Similarly to the previous case this never worked as the intended semantics
      of the actions dictate. It's better to not allow it at all until there's a
      proper implementation

    - ``reboot`` action of ``on_poweroff`` now actually works

      The guest OS is now rebooted instead of terminating the VM when the
      ``reboot`` action is used and the guest OS powers down. Note that it's
      incompatible with ``on_reboot`` set to ``destroy``.

    - Changes in action action of ``on_reboot`` are now updated with qemu

      Libvirtd can now properly update the ``on_reboot`` action in qemu which
      allows proper handling when changing between ``reboot`` and ``destroy``
      actions. In addition, switching from ``reboot`` to ``destroy`` was
      forbidden for older qemus which don't support the update API as the guest
      could still reboot and execute some instructions until it was terminated.

* Bug fixes

  * qemu: Open chardev logfile on behalf of QEMU

    Guests with a logfile configured for their chardevs are now able to start
    even when no virtlogd is configured.

  * virhostmem: Handle numactl-less build in hugepages allocation/reporting

    Some architectures don't have notion of NUMA (e.g. s390x) but do support
    hugepages. Libvirt silently ignored requests to allocate/report hugepage
    pool when built without numactl. This is now fixed and the pool can be
    allocated/reported on properly.

  * qemu: Record proper ``backing`` format for overlays of qcow2+luks images

    Libvirt would record ``luks`` instead of ``qcow2`` into the metadata. In
    practice this is a problem only when inspecting images manually via
    ``qemu-img`` as with libvirt users must use full specification of the
    backing chain in the domain XML which supersedes information recorded in
    the image metadata.

Enjoy.

Jirka